Re: [TANKS] Remote Triggering - R/C MOSFET switch works fine
I added that feature so that we can conduct the Doug Experiment one battle to see how reduced firing rates affect the game An immediate effect will be the reduction of long range gunnery. If the Cromwell only gets to shoot once every 10 seconds or so. You better believe said Cromwell is going to be right on somebody's six when it takes that shot! ;) ST On Friday, October 10, 2014 12:47:10 PM UTC-4, Frank Pittelli wrote: Not only has it already been built, but that circuit was battle-tested in the SU100, Patton and Semovente during the last battle. The board connects to the R/C receiver and directly drives the marker solenoid, as I explained in previous posts, exactly like an e-trigger. It even has a feature that allows you to restrict your firing rate to one shot every N seconds. I added that feature so that we can conduct the Doug Experiment one battle to see how reduced firing rates affect the game. On 10/10/2014 10:50 AM, TyngTech wrote: What one of you E Guru's need to come up with is an R/C triggered circuit that can directly fire the solenoid in a typical e-marker. This bypasses the marker trigger board altogether. Loic's first combat tank had such a circuit but it had the nasty habit of firing when power was turned off. It was some sort of capacitor discharge circuit. -- -- You are currently subscribed to the R/C Tank Combat group. To post a message, send email to rctankcombat@googlegroups.com To unsubscribe, send email to rctankcombat+unsubscr...@googlegroups.com Visit the group at http://groups.google.com/group/rctankcombat --- You received this message because you are subscribed to the Google Groups R/C Tank Combat group. To unsubscribe from this group and stop receiving emails from it, send an email to rctankcombat+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
Re: [TANKS] Remote Triggering - R/C MOSFET switch works fine
Personally, I think that the number of unexpected consequences, good and bad, will far exceed our expectations. That's the fun part about experimentation. Besides, it can't be worse than Tank Soccer On Oct 12, 2014 9:56 AM, TyngTech steve...@gmail.com wrote: I added that feature so that we can conduct the Doug Experiment one battle to see how reduced firing rates affect the game An immediate effect will be the reduction of long range gunnery. If the Cromwell only gets to shoot once every 10 seconds or so. You better believe said Cromwell is going to be right on somebody's six when it takes that shot! ;) ST On Friday, October 10, 2014 12:47:10 PM UTC-4, Frank Pittelli wrote: Not only has it already been built, but that circuit was battle-tested in the SU100, Patton and Semovente during the last battle. The board connects to the R/C receiver and directly drives the marker solenoid, as I explained in previous posts, exactly like an e-trigger. It even has a feature that allows you to restrict your firing rate to one shot every N seconds. I added that feature so that we can conduct the Doug Experiment one battle to see how reduced firing rates affect the game. On 10/10/2014 10:50 AM, TyngTech wrote: What one of you E Guru's need to come up with is an R/C triggered circuit that can directly fire the solenoid in a typical e-marker. This bypasses the marker trigger board altogether. Loic's first combat tank had such a circuit but it had the nasty habit of firing when power was turned off. It was some sort of capacitor discharge circuit. -- -- You are currently subscribed to the R/C Tank Combat group. To post a message, send email to rctankcombat@googlegroups.com To unsubscribe, send email to rctankcombat+unsubscr...@googlegroups.com Visit the group at http://groups.google.com/group/rctankcombat --- You received this message because you are subscribed to the Google Groups R/C Tank Combat group. To unsubscribe from this group and stop receiving emails from it, send an email to rctankcombat+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout. -- -- You are currently subscribed to the R/C Tank Combat group. To post a message, send email to rctankcombat@googlegroups.com To unsubscribe, send email to rctankcombat+unsubscr...@googlegroups.com Visit the group at http://groups.google.com/group/rctankcombat --- You received this message because you are subscribed to the Google Groups R/C Tank Combat group. To unsubscribe from this group and stop receiving emails from it, send an email to rctankcombat+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
Re: [TANKS] Remote Triggering - R/C MOSFET switch works fine
Tank Soccer was the best! Your just ore because you lost! lol On Sunday, October 12, 2014 10:31:33 AM UTC-4, Frank Pittelli wrote: Personally, I think that the number of unexpected consequences, good and bad, will far exceed our expectations. That's the fun part about experimentation. Besides, it can't be worse than Tank Soccer On Oct 12, 2014 9:56 AM, TyngTech stev...@gmail.com javascript: wrote: I added that feature so that we can conduct the Doug Experiment one battle to see how reduced firing rates affect the game An immediate effect will be the reduction of long range gunnery. If the Cromwell only gets to shoot once every 10 seconds or so. You better believe said Cromwell is going to be right on somebody's six when it takes that shot! ;) ST On Friday, October 10, 2014 12:47:10 PM UTC-4, Frank Pittelli wrote: Not only has it already been built, but that circuit was battle-tested in the SU100, Patton and Semovente during the last battle. The board connects to the R/C receiver and directly drives the marker solenoid, as I explained in previous posts, exactly like an e-trigger. It even has a feature that allows you to restrict your firing rate to one shot every N seconds. I added that feature so that we can conduct the Doug Experiment one battle to see how reduced firing rates affect the game. On 10/10/2014 10:50 AM, TyngTech wrote: What one of you E Guru's need to come up with is an R/C triggered circuit that can directly fire the solenoid in a typical e-marker. This bypasses the marker trigger board altogether. Loic's first combat tank had such a circuit but it had the nasty habit of firing when power was turned off. It was some sort of capacitor discharge circuit. -- -- You are currently subscribed to the R/C Tank Combat group. To post a message, send email to rctank...@googlegroups.com javascript: To unsubscribe, send email to rctankcombat...@googlegroups.com javascript: Visit the group at http://groups.google.com/group/rctankcombat --- You received this message because you are subscribed to the Google Groups R/C Tank Combat group. To unsubscribe from this group and stop receiving emails from it, send an email to rctankcombat...@googlegroups.com javascript:. For more options, visit https://groups.google.com/d/optout. -- -- You are currently subscribed to the R/C Tank Combat group. To post a message, send email to rctankcombat@googlegroups.com To unsubscribe, send email to rctankcombat+unsubscr...@googlegroups.com Visit the group at http://groups.google.com/group/rctankcombat --- You received this message because you are subscribed to the Google Groups R/C Tank Combat group. To unsubscribe from this group and stop receiving emails from it, send an email to rctankcombat+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
RE: [TANKS] Remote Triggering - R/C MOSFET switch works fine
It even has a feature that allows you to restrict your firing rate to one shot every N seconds. I added that feature so that we can conduct the Doug Experiment one battle to see how reduced firing rates affect the game. From a few searches, it look like WWII heavy tanks had a rate of fire on the order of 6-8 RPM. The Abrams claims 8-10 RPM. I think it would be fun to play with values in that range. Regarding single or multiple batteries - I've been using a single battery supply for the eight years (wow ! really ?!?!) I've been battling with you guys. Even with a computer and the marker electronics sharing the same ground as the motors, I haven't seen any issues. I do use opto-isolators on the marker triggering, however. -Original Message- From: rctankcombat@googlegroups.com [mailto:rctankcombat@googlegroups.com] On Behalf Of Frank Pittelli Sent: Friday, October 10, 2014 12:47 PM To: rctankcombat@googlegroups.com Subject: Re: [TANKS] Remote Triggering - R/C MOSFET switch works fine Not only has it already been built, but that circuit was battle-tested in the SU100, Patton and Semovente during the last battle. The board connects to the R/C receiver and directly drives the marker solenoid, as I explained in previous posts, exactly like an e-trigger. It even has a feature that allows you to restrict your firing rate to one shot every N seconds. I added that feature so that we can conduct the Doug Experiment one battle to see how reduced firing rates affect the game. On 10/10/2014 10:50 AM, TyngTech wrote: What one of you E Guru's need to come up with is an R/C triggered circuit that can directly fire the solenoid in a typical e-marker. This bypasses the marker trigger board altogether. Loic's first combat tank had such a circuit but it had the nasty habit of firing when power was turned off. It was some sort of capacitor discharge circuit. -- -- You are currently subscribed to the R/C Tank Combat group. To post a message, send email to rctankcombat@googlegroups.com To unsubscribe, send email to rctankcombat+unsubscr...@googlegroups.com Visit the group at http://groups.google.com/group/rctankcombat --- You received this message because you are subscribed to the Google Groups R/C Tank Combat group. To unsubscribe from this group and stop receiving emails from it, send an email to rctankcombat+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout. -- -- You are currently subscribed to the R/C Tank Combat group. To post a message, send email to rctankcombat@googlegroups.com To unsubscribe, send email to rctankcombat+unsubscr...@googlegroups.com Visit the group at http://groups.google.com/group/rctankcombat --- You received this message because you are subscribed to the Google Groups R/C Tank Combat group. To unsubscribe from this group and stop receiving emails from it, send an email to rctankcombat+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
Re: [TANKS] Remote Triggering - R/C MOSFET switch works fine
On Thursday, October 9, 2014 9:23:34 AM UTC-4, Frank Pittelli wrote: Agreed. I would never drive an inductive load directly with an opto-isolator. Fortunately, there are plenty of cheap FETs with built-in protection now that can be used. I disagree. I always use an opto-isolator between a microprocessor that reads RC servo signals and an inductive load. The opto-isolator protects the microprocessor from nasty inductive spikes. 1) small inductive loads (150 mA steady-state current) Drive the LED side of the opto-isolator with the microprocessor. The Darlington side can safely drive a small inductive load directly. 2) medium inductive load (2 A steady-state current) Drive the LED side of the opto-isolator with the microprocessor. Use the Darlington side to drive a BJT or MOSFET for the load. 3) large inductive loads (40 A steady-state current) Drive the LED side of a solid-state relay (SSR = big ass opto-isolator) with the microprocessor. The SSR output is a very large MOSFET with heat sinks that can drive the load. Driving an FET directly from the microprocessor does not protect it from large inductive spikes because there must be a common connection between the microprocessor GND, the FET source pin and low-side power for the load. Joe -- -- You are currently subscribed to the R/C Tank Combat group. To post a message, send email to rctankcombat@googlegroups.com To unsubscribe, send email to rctankcombat+unsubscr...@googlegroups.com Visit the group at http://groups.google.com/group/rctankcombat --- You received this message because you are subscribed to the Google Groups R/C Tank Combat group. To unsubscribe from this group and stop receiving emails from it, send an email to rctankcombat+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
Re: [TANKS] Remote Triggering - R/C MOSFET switch works fine
Opto-isolators are slow to switch on and off. Darlington pairs are slow to switch on, and even slower to switch off. This results in a system thats slow to switch off, so by extension right as the inductor is kicking a huge current spike down to it, the opto-isolator is least equipped to handle it, being somewhere in the active region with high resistance. This also makes them unsuitable for driving the gate of a mosfet by the way, which is a capacitive load. In cases 2 and 3, you just drive an N mosfet directly. Heck, in all cases you just drive an NFET. I dont understand why anyone uses an SSR these days, when 200 amp mosfets can be had for 3$ each. Mosfets are cheaper, faster, and can handle more current safely. For your circuit to work, there must be a common ground. Ultimately the ground on your micro-controller and your load meet up no matter what you do. If you use an N mosfet, then the mosfet is on the low side of the load. I dont understand your reasoning for why you dont just drive the load off a mosfet. On Fri, Oct 10, 2014 at 7:44 AM, Joe Sommer anvil...@comcast.net wrote: On Thursday, October 9, 2014 9:23:34 AM UTC-4, Frank Pittelli wrote: Agreed. I would never drive an inductive load directly with an opto-isolator. Fortunately, there are plenty of cheap FETs with built-in protection now that can be used. I disagree. I always use an opto-isolator between a microprocessor that reads RC servo signals and an inductive load. The opto-isolator protects the microprocessor from nasty inductive spikes. 1) small inductive loads (150 mA steady-state current) Drive the LED side of the opto-isolator with the microprocessor. The Darlington side can safely drive a small inductive load directly. 2) medium inductive load (2 A steady-state current) Drive the LED side of the opto-isolator with the microprocessor. Use the Darlington side to drive a BJT or MOSFET for the load. 3) large inductive loads (40 A steady-state current) Drive the LED side of a solid-state relay (SSR = big ass opto-isolator) with the microprocessor. The SSR output is a very large MOSFET with heat sinks that can drive the load. Driving an FET directly from the microprocessor does not protect it from large inductive spikes because there must be a common connection between the microprocessor GND, the FET source pin and low-side power for the load. Joe -- -- You are currently subscribed to the R/C Tank Combat group. To post a message, send email to rctankcombat@googlegroups.com To unsubscribe, send email to rctankcombat+unsubscr...@googlegroups.com Visit the group at http://groups.google.com/group/rctankcombat --- You received this message because you are subscribed to the Google Groups R/C Tank Combat group. To unsubscribe from this group and stop receiving emails from it, send an email to rctankcombat+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout. -- Isaac Goldman 5142334423 This message contains confidential information and is intended only for the individual named. If you are not the named addressee you should not disseminate, distribute or copy this e-mail. -- -- You are currently subscribed to the R/C Tank Combat group. To post a message, send email to rctankcombat@googlegroups.com To unsubscribe, send email to rctankcombat+unsubscr...@googlegroups.com Visit the group at http://groups.google.com/group/rctankcombat --- You received this message because you are subscribed to the Google Groups R/C Tank Combat group. To unsubscribe from this group and stop receiving emails from it, send an email to rctankcombat+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
Re: [TANKS] Remote Triggering - R/C MOSFET switch works fine
What one of you E Guru's need to come up with is an R/C triggered circuit that can directly fire the solenoid in a typical e-marker. This bypasses the marker trigger board altogether. Loic's first combat tank had such a circuit but it had the nasty habit of firing when power was turned off. It was some sort of capacitor discharge circuit. -- -- You are currently subscribed to the R/C Tank Combat group. To post a message, send email to rctankcombat@googlegroups.com To unsubscribe, send email to rctankcombat+unsubscr...@googlegroups.com Visit the group at http://groups.google.com/group/rctankcombat --- You received this message because you are subscribed to the Google Groups R/C Tank Combat group. To unsubscribe from this group and stop receiving emails from it, send an email to rctankcombat+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
RE: [TANKS] Remote Triggering - R/C MOSFET switch works fine
And this will be resolved when we have the “Hero” controller which will replace a LOT of features, like the pico switches, Marker onboard circuits, and 9V feeds to the Marker, Laser. In addition, it will be run by a PS2 controller which brings lots more capabilities, buttons and triggers. ‘Cross the Road Electronics’ is at the forefront of the Robotic world, but they are now very busy with some production schedule. They will work again on the Hero by late 2014. Cheers from Utah… can’t wait to cross aim with you guys in a couple of weeks! Loic -- -- You are currently subscribed to the R/C Tank Combat group. To post a message, send email to rctankcombat@googlegroups.com To unsubscribe, send email to rctankcombat+unsubscr...@googlegroups.com Visit the group at http://groups.google.com/group/rctankcombat --- You received this message because you are subscribed to the Google Groups R/C Tank Combat group. To unsubscribe from this group and stop receiving emails from it, send an email to rctankcombat+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout. attachment: Loic Anthian.vcf
Re: [TANKS] Remote Triggering - R/C MOSFET switch works fine
I tested the solution described below (4.2) today and it didn't work as expected ... but I believe it's a viable solution. Whaaa Stay tuned. I built a Pololu R/C Switch with Digital Output. The process was almost identical to the previous one for the Pololu MOSFET switch, except I needed two 2-position screw terminals as the two connections I needed were not adjacent. On the upside if I ever want to know the GOOD state and/or tap into the VCC it's ready to go. I turned on the marker power and my remote controller. When I turned on the power to the receiver (which also powers the switch board) the marker immediately fired. The switch board blinked its LED briefly about once a second as specified. I pressed the FIRE button on my controller and the switch board LED stayed on as specified while the button was pressed but the marker didn't fire. I pressed the manual trigger on the marker and it fired once, but didn't fire one subsequent presses. I pressed the FIRE button on my controller a few times and nothing. I pressed the manual trigger and again it fired once but no more. After scratching my head I realized the problem and a potential solution. Challenge: Explain the problem. Hint: All you need to know is in this discussion thread over the last few days. Advanced challenge #1: Devise a diagnostic procedure using the existing setup to confirm your theory. Advanced challenge #2: Propose a solution using the existing hardware. Principals of Tri-Pact are not eligible to enter. On Wednesday, October 8, 2014 5:48:33 PM UTC-4, Mike Lyons wrote: ... 4.1 Connect the output of a logic-level device (examples in 4 above) to the high side of the trigger, and the ground of the device to the marker ground (the low side of the trigger would be convenient). ... -- -- You are currently subscribed to the R/C Tank Combat group. To post a message, send email to rctankcombat@googlegroups.com To unsubscribe, send email to rctankcombat+unsubscr...@googlegroups.com Visit the group at http://groups.google.com/group/rctankcombat --- You received this message because you are subscribed to the Google Groups R/C Tank Combat group. To unsubscribe from this group and stop receiving emails from it, send an email to rctankcombat+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
Re: [TANKS] Remote Triggering - R/C MOSFET switch works fine
Not only has it already been built, but that circuit was battle-tested in the SU100, Patton and Semovente during the last battle. The board connects to the R/C receiver and directly drives the marker solenoid, as I explained in previous posts, exactly like an e-trigger. It even has a feature that allows you to restrict your firing rate to one shot every N seconds. I added that feature so that we can conduct the Doug Experiment one battle to see how reduced firing rates affect the game. On 10/10/2014 10:50 AM, TyngTech wrote: What one of you E Guru's need to come up with is an R/C triggered circuit that can directly fire the solenoid in a typical e-marker. This bypasses the marker trigger board altogether. Loic's first combat tank had such a circuit but it had the nasty habit of firing when power was turned off. It was some sort of capacitor discharge circuit. -- -- You are currently subscribed to the R/C Tank Combat group. To post a message, send email to rctankcombat@googlegroups.com To unsubscribe, send email to rctankcombat+unsubscr...@googlegroups.com Visit the group at http://groups.google.com/group/rctankcombat --- You received this message because you are subscribed to the Google Groups R/C Tank Combat group. To unsubscribe from this group and stop receiving emails from it, send an email to rctankcombat+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
Re: [TANKS] Remote Triggering - R/C MOSFET switch works fine
On Friday, October 10, 2014 8:21:21 AM UTC-4, True North Armouries wrote: I dont understand why anyone uses an SSR these days, when 200 amp mosfets can be had for 3$ each. Build some high current drivers. Be certain to mount hefty heat sinks. Report back after you have fried a few. For your circuit to work, there must be a common ground. Ultimately the ground on your micro-controller and your load meet up no matter what you do. Incorrect - the GND on your microprocessor and the low-side power for your load are NOT connected when you use an opto-isolator or SSR. -- -- You are currently subscribed to the R/C Tank Combat group. To post a message, send email to rctankcombat@googlegroups.com To unsubscribe, send email to rctankcombat+unsubscr...@googlegroups.com Visit the group at http://groups.google.com/group/rctankcombat --- You received this message because you are subscribed to the Google Groups R/C Tank Combat group. To unsubscribe from this group and stop receiving emails from it, send an email to rctankcombat+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
Re: [TANKS] Remote Triggering - R/C MOSFET switch works fine
The ground on the MCU and the low side dont connect to the same place through what black magic? Or are you lugging a second battery around? That sounds like a waste of space, and an additional thing to fail or malfunction at the wrong moment. I have built high current drivers, and I have yet to blow one or see one blow from an over-current. The one im designing for my tank even has closed loop current monitoring for additional protection. Actually come to think of it, SSRs are so inefficient and slow compared to mosfets I suspect for any power level you could affordably use an SSR, you would need very little heat sinking if any. On Fri, Oct 10, 2014 at 2:00 PM, Joe Sommer anvil...@comcast.net wrote: On Friday, October 10, 2014 8:21:21 AM UTC-4, True North Armouries wrote: I dont understand why anyone uses an SSR these days, when 200 amp mosfets can be had for 3$ each. Build some high current drivers. Be certain to mount hefty heat sinks. Report back after you have fried a few. For your circuit to work, there must be a common ground. Ultimately the ground on your micro-controller and your load meet up no matter what you do. Incorrect - the GND on your microprocessor and the low-side power for your load are NOT connected when you use an opto-isolator or SSR. -- -- You are currently subscribed to the R/C Tank Combat group. To post a message, send email to rctankcombat@googlegroups.com To unsubscribe, send email to rctankcombat+unsubscr...@googlegroups.com Visit the group at http://groups.google.com/group/rctankcombat --- You received this message because you are subscribed to the Google Groups R/C Tank Combat group. To unsubscribe from this group and stop receiving emails from it, send an email to rctankcombat+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout. -- Isaac Goldman 5142334423 This message contains confidential information and is intended only for the individual named. If you are not the named addressee you should not disseminate, distribute or copy this e-mail. -- -- You are currently subscribed to the R/C Tank Combat group. To post a message, send email to rctankcombat@googlegroups.com To unsubscribe, send email to rctankcombat+unsubscr...@googlegroups.com Visit the group at http://groups.google.com/group/rctankcombat --- You received this message because you are subscribed to the Google Groups R/C Tank Combat group. To unsubscribe from this group and stop receiving emails from it, send an email to rctankcombat+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
Re: [TANKS] Remote Triggering - R/C MOSFET switch works fine
The logic device has a small battery of its own, or is using the R/C receiver's battery. 4 x AAs work for me. The motor switched by the SSR (or whatever) has its own big fat battery. 12 V SLA or similar looks good. The two sides are isolated by the SSR (or whatever). On Friday, October 10, 2014 4:15:19 PM UTC-4, True North Armouries wrote: The ground on the MCU and the low side dont connect to the same place through what black magic? Or are you lugging a second battery around? That sounds like a waste of space, and an additional thing to fail or malfunction at the wrong moment. ... -- -- You are currently subscribed to the R/C Tank Combat group. To post a message, send email to rctankcombat@googlegroups.com To unsubscribe, send email to rctankcombat+unsubscr...@googlegroups.com Visit the group at http://groups.google.com/group/rctankcombat --- You received this message because you are subscribed to the Google Groups R/C Tank Combat group. To unsubscribe from this group and stop receiving emails from it, send an email to rctankcombat+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
Re: [TANKS] Remote Triggering - R/C MOSFET switch works fine
Agreed. I would never drive an inductive load directly with an opto-isolator. Fortunately, there are plenty of cheap FETs with built-in protection now that can be used. On 10/8/2014 9:36 PM, isaac goldman wrote: I dont trust opto-isolators to handle the spike from an inductive load like a solenoid. Replacing the e-trigger with one could work, but directly energising the solenoid off it doesnt appeal to me. -- -- You are currently subscribed to the R/C Tank Combat group. To post a message, send email to rctankcombat@googlegroups.com To unsubscribe, send email to rctankcombat+unsubscr...@googlegroups.com Visit the group at http://groups.google.com/group/rctankcombat --- You received this message because you are subscribed to the Google Groups R/C Tank Combat group. To unsubscribe from this group and stop receiving emails from it, send an email to rctankcombat+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
Re: [TANKS] Remote Triggering - R/C MOSFET switch works fine
What's the interface between the R/C receiver (or equivalent e.g. C12C plug plug plug) and the door lock thingamy? On Wednesday, October 8, 2014 2:38:02 PM UTC-4, Frank Pittelli wrote: ... 5) Use a door-lock actuator to pull the manual trigger. ... -- -- You are currently subscribed to the R/C Tank Combat group. To post a message, send email to rctankcombat@googlegroups.com To unsubscribe, send email to rctankcombat+unsubscr...@googlegroups.com Visit the group at http://groups.google.com/group/rctankcombat --- You received this message because you are subscribed to the Google Groups R/C Tank Combat group. To unsubscribe from this group and stop receiving emails from it, send an email to rctankcombat+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
Re: [TANKS] Remote Triggering - R/C MOSFET switch works fine
My crystal ball is a little fuzzy but I think I see CRCS. On Wednesday, October 8, 2014 2:38:02 PM UTC-4, Frank Pittelli wrote: ... 6) Use a prototype Cheap Control Systems Servo Switch board to drive the solenoid directly ... -- -- You are currently subscribed to the R/C Tank Combat group. To post a message, send email to rctankcombat@googlegroups.com To unsubscribe, send email to rctankcombat+unsubscr...@googlegroups.com Visit the group at http://groups.google.com/group/rctankcombat --- You received this message because you are subscribed to the Google Groups R/C Tank Combat group. To unsubscribe from this group and stop receiving emails from it, send an email to rctankcombat+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
Re: [TANKS] Remote Triggering - R/C MOSFET switch works fine
Usually, the door lock actuator is used for manual triggers, because it pulls harder and faster than a servo by itself. When an e-trigger is used, very little force is needed, so the door lock actuator is not really needed. Nonetheless, any of the following configurations could be used to activate a door lock actuator with proper wiring: a) Servo Mechanical Switch b) Relay-based Servo Switch c) FET-based Servo Switch d) Prototype CCS Servo Switch (FET-based) On 10/8/2014 3:53 PM, Mike Lyons wrote: What's the interface between the R/C receiver (or equivalent e.g. C12C plug plug plug) and the door lock thingamy? -- -- You are currently subscribed to the R/C Tank Combat group. To post a message, send email to rctankcombat@googlegroups.com To unsubscribe, send email to rctankcombat+unsubscr...@googlegroups.com Visit the group at http://groups.google.com/group/rctankcombat --- You received this message because you are subscribed to the Google Groups R/C Tank Combat group. To unsubscribe from this group and stop receiving emails from it, send an email to rctankcombat+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
Re: [TANKS] Remote Triggering - R/C MOSFET switch works fine
Why does there have to be a servo involved? You can fire a door lock solenoid with only electronics quite easily. Or am i misunderstanding? Ill post a circuit later tonight. On 2014-10-08 5:12 PM, Frank Pittelli frank.pitte...@gmail.com wrote: Usually, the door lock actuator is used for manual triggers, because it pulls harder and faster than a servo by itself. When an e-trigger is used, very little force is needed, so the door lock actuator is not really needed. Nonetheless, any of the following configurations could be used to activate a door lock actuator with proper wiring: a) Servo Mechanical Switch b) Relay-based Servo Switch c) FET-based Servo Switch d) Prototype CCS Servo Switch (FET-based) On 10/8/2014 3:53 PM, Mike Lyons wrote: What's the interface between the R/C receiver (or equivalent e.g. C12C plug plug plug) and the door lock thingamy? -- -- You are currently subscribed to the R/C Tank Combat group. To post a message, send email to rctankcombat@googlegroups.com To unsubscribe, send email to rctankcombat+unsubscr...@googlegroups.com Visit the group at http://groups.google.com/group/rctankcombat --- You received this message because you are subscribed to the Google Groups R/C Tank Combat group. To unsubscribe from this group and stop receiving emails from it, send an email to rctankcombat+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout. -- -- You are currently subscribed to the R/C Tank Combat group. To post a message, send email to rctankcombat@googlegroups.com To unsubscribe, send email to rctankcombat+unsubscr...@googlegroups.com Visit the group at http://groups.google.com/group/rctankcombat --- You received this message because you are subscribed to the Google Groups R/C Tank Combat group. To unsubscribe from this group and stop receiving emails from it, send an email to rctankcombat+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
Re: [TANKS] Remote Triggering - R/C MOSFET switch works fine
Very interesting. Thanks, Frank! This suggests an even simpler and lower-cost solution: 4.1 Connect the output of a logic-level device (examples in 4 above) to the high side of the trigger, and the ground of the device to the marker ground (the low side of the trigger would be convenient). The logic levels don't matter as long as high is high enough that the marker doesn't interpret it as low and not so high that it blows something (unlikely), and low is ground level. On Wednesday, October 8, 2014 2:38:02 PM UTC-4, Frank Pittelli wrote: The switch on the e-trigger is a standard active-low input to a micro-processor I/O port ... -- -- You are currently subscribed to the R/C Tank Combat group. To post a message, send email to rctankcombat@googlegroups.com To unsubscribe, send email to rctankcombat+unsubscr...@googlegroups.com Visit the group at http://groups.google.com/group/rctankcombat --- You received this message because you are subscribed to the Google Groups R/C Tank Combat group. To unsubscribe from this group and stop receiving emails from it, send an email to rctankcombat+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
Re: [TANKS] Remote Triggering - R/C MOSFET switch works fine
There always has to be some sort of electronic interface between the R/C Receiver and the door-lock (or e-trigger) solenoid and Mike has been cataloging the various ways that can be done. Option (a) below is the simplest solution, that anyone can implement with only basic tools and wiring skills. It can also be done for less than $5 using readily available parts from surplus catalogs. It also doesn't require any modifications to the marker. Options (b), (c) and (d) below don't use a servo, they use a servo switch which is an electronic circuit that accepts a servo input signal and then switches something. The most common servo switch circuits use a simple micro-processor to read the servo signal and trigger the switch. Old-timers used a 555 and an assortment of other components to achieve the same goal but that's horse-and-buggy type stuff. Mike listed some servo switches that are commercially available, all of which can be used to operate a door-lock actuator or switch an e-trigger circuit. When used with a door-lock actuator, no marker modifications are required. When used with the e-trigger mechanical switch, you need only solder a pair of wires between the mechanical switch and the servo switch. Option (d) is a prototype circuit board used in the most recent battles that can drive the e-trigger solenoid directly from a servo signal. It requires the most drastic changes to the marker, disconnecting the solenoid from the e-trigger circuit and connecting it to the servo switch board. I guess we should also include an Option (e) which is an Opto-isolator-based Servo Switch. They provide isolation like a mechanical relay without any moving parts, but they can't handle as much current as a FET or relay. Relays, FETs and opto-isolators are the most common approaches for switching something, with various advantages and disadvantages that keep them all in use. On 10/8/2014 5:17 PM, isaac goldman wrote: Why does there have to be a servo involved? You can fire a door lock solenoid with only electronics quite easily. Or am i misunderstanding? Ill post a circuit later tonight. On 2014-10-08 5:12 PM, Frank Pittelli frank.pitte...@gmail.com mailto:frank.pitte...@gmail.com wrote: a) Servo Mechanical Switch b) Relay-based Servo Switch c) FET-based Servo Switch d) Prototype CCS Servo Switch (FET-based) -- -- You are currently subscribed to the R/C Tank Combat group. To post a message, send email to rctankcombat@googlegroups.com To unsubscribe, send email to rctankcombat+unsubscr...@googlegroups.com Visit the group at http://groups.google.com/group/rctankcombat --- You received this message because you are subscribed to the Google Groups R/C Tank Combat group. To unsubscribe from this group and stop receiving emails from it, send an email to rctankcombat+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
Re: [TANKS] Remote Triggering - R/C MOSFET switch works fine
4.1 the problem is that the output from the receiver is not a digital logic signal in the high/low sense of the word. Its a ~50hz signal who's duty cycle varies with the position of the stick. Hence why you need a servo switch. Thanks for clarifying that Frank. For some reason I thought you meant a MAG style switch to energise the FET. I dont trust opto-isolators to handle the spike from an inductive load like a solenoid. Replacing the e-trigger with one could work, but directly energising the solenoid off it doesnt appeal to me. On Wed, Oct 8, 2014 at 6:24 PM, Frank Pittelli frank.pitte...@gmail.com wrote: There always has to be some sort of electronic interface between the R/C Receiver and the door-lock (or e-trigger) solenoid and Mike has been cataloging the various ways that can be done. Option (a) below is the simplest solution, that anyone can implement with only basic tools and wiring skills. It can also be done for less than $5 using readily available parts from surplus catalogs. It also doesn't require any modifications to the marker. Options (b), (c) and (d) below don't use a servo, they use a servo switch which is an electronic circuit that accepts a servo input signal and then switches something. The most common servo switch circuits use a simple micro-processor to read the servo signal and trigger the switch. Old-timers used a 555 and an assortment of other components to achieve the same goal but that's horse-and-buggy type stuff. Mike listed some servo switches that are commercially available, all of which can be used to operate a door-lock actuator or switch an e-trigger circuit. When used with a door-lock actuator, no marker modifications are required. When used with the e-trigger mechanical switch, you need only solder a pair of wires between the mechanical switch and the servo switch. Option (d) is a prototype circuit board used in the most recent battles that can drive the e-trigger solenoid directly from a servo signal. It requires the most drastic changes to the marker, disconnecting the solenoid from the e-trigger circuit and connecting it to the servo switch board. I guess we should also include an Option (e) which is an Opto-isolator-based Servo Switch. They provide isolation like a mechanical relay without any moving parts, but they can't handle as much current as a FET or relay. Relays, FETs and opto-isolators are the most common approaches for switching something, with various advantages and disadvantages that keep them all in use. On 10/8/2014 5:17 PM, isaac goldman wrote: Why does there have to be a servo involved? You can fire a door lock solenoid with only electronics quite easily. Or am i misunderstanding? Ill post a circuit later tonight. On 2014-10-08 5:12 PM, Frank Pittelli frank.pitte...@gmail.com mailto:frank.pitte...@gmail.com wrote: a) Servo Mechanical Switch b) Relay-based Servo Switch c) FET-based Servo Switch d) Prototype CCS Servo Switch (FET-based) -- -- You are currently subscribed to the R/C Tank Combat group. To post a message, send email to rctankcombat@googlegroups.com To unsubscribe, send email to rctankcombat+unsubscr...@googlegroups.com Visit the group at http://groups.google.com/group/rctankcombat --- You received this message because you are subscribed to the Google Groups R/C Tank Combat group. To unsubscribe from this group and stop receiving emails from it, send an email to rctankcombat+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout. -- Isaac Goldman 5142334423 This message contains confidential information and is intended only for the individual named. If you are not the named addressee you should not disseminate, distribute or copy this e-mail. -- -- You are currently subscribed to the R/C Tank Combat group. To post a message, send email to rctankcombat@googlegroups.com To unsubscribe, send email to rctankcombat+unsubscr...@googlegroups.com Visit the group at http://groups.google.com/group/rctankcombat --- You received this message because you are subscribed to the Google Groups R/C Tank Combat group. To unsubscribe from this group and stop receiving emails from it, send an email to rctankcombat+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
Re: [TANKS] Remote Triggering - R/C MOSFET switch works fine
In 4.1 I am describing a microprocessor or something similar that produces true high and low logic levels. I'm *not* referring to an ordinary R/C receiver. The logic-level device may have interpreted R/C signals and produced a different type of output, or it might be a non-R/C solution (WiFi, Bluetooth, etc). On Wednesday, October 8, 2014 9:37:27 PM UTC-4, True North Armouries wrote: 4.1 the problem is that the output from the receiver is not a digital logic signal in the high/low sense of the word. Its a ~50hz signal who's duty cycle varies with the position of the stick. Hence why you need a servo switch. ... -- -- You are currently subscribed to the R/C Tank Combat group. To post a message, send email to rctankcombat@googlegroups.com To unsubscribe, send email to rctankcombat+unsubscr...@googlegroups.com Visit the group at http://groups.google.com/group/rctankcombat --- You received this message because you are subscribed to the Google Groups R/C Tank Combat group. To unsubscribe from this group and stop receiving emails from it, send an email to rctankcombat+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
