I've been wanting a circuit like this for my model warships. Now that I'm moving into Treaty warship combat, a timer that gives a .5 second delay between firing would be nice. Of course, it would have to do all the things Ben listed. :)
Mike ________________________________ From: Modena <[email protected]> To: R/C Tank Combat <[email protected]> Sent: Wednesday, July 8, 2009 2:56:46 PM Subject: [TANKS] Timing circuit for canon firing - help? Good day all, I am going to be using a home-made canon, driven by c02 with a 12v solenoid valve designed for 1000psi air. Standard paintball tank and adjustable pressure regulator will be used to bring down pressure to around 200psi or whatever I find is required through testing. Fire control will be by actuating the GEAR switch on my aero-style TX, this switch will be replaced with a momentary push button. In effect you could think of this as an electronic marker built to be controlled by RC. So...... what I need is an adjustable timing circuit, something that works like this: 1) press fire 2) custom circuit switches a relay which provides power to the 12v air valve, air valve opens, paintball shoots 3) custom circuit "un-switches" relay after X milliseconds (time adjustable via pot or similar) which removes power from valve which causes valve to close 4) custom circuit enters "delay" mode of Y milliseconds (adjustable again) to allow canon to re-chamber the next round 5) circuit is ready to fire again (as long as fire button was released between step 1 and step 5) I really want this to operate as above regardless of whether the fire button is "tapped" or held in.....holding the fire button down must only operate the circuit once, so if you press and HOLD fire the circuit will stop at the end of step 4 above and will not be ready again until the fire button is released - otherwise it would be fully- automatic, cool, but not playing by the rules! I know about the picoswitch which can do the relay switching off an RC input for me, and this type of thing looks ideal for the timing logic, but the timings are in the wrong range: http://www.apogeekits.com/interval_timer_555.htm Can anyone assist here? I know stuff all about electronics, but it seems if we can get this nailed down then certainly other RCTankers in AU will have a need for this also. Ben --~--~---------~--~----~------------~-------~--~----~ You are currently subscribed to the "R/C Tank Combat" group. To post a message, send email to [email protected] To unsubscribe, send email to [email protected] Visit the group at http://groups.google.com/group/rctankcombat -~----------~----~----~----~------~----~------~--~---
