[neonixie-l] Re: FLW Clocks
I'd be interested as well - got a bunch of these waiting! Nick On Saturday, 18 April 2015 10:31:26 UTC+1, petehand wrote: I would do that for you. How many have you got? On Friday, April 17, 2015 at 5:26:47 AM UTC-7, Greg P wrote: I wish someone would build a kit that uses the 5971 Alpha tube. I have a stash of these just waiting to be lit. -- You received this message because you are subscribed to the Google Groups neonixie-l group. To unsubscribe from this group and stop receiving emails from it, send an email to neonixie-l+unsubscr...@googlegroups.com. To post to this group, send an email to neonixie-l@googlegroups.com. To view this discussion on the web, visit https://groups.google.com/d/msgid/neonixie-l/dd7cb4d7-9308-4036-8126-9248210542e0%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
Re: [neonixie-l] FLW Clocks
On Apr 16, 2015, at 9:26 AM, Grahame Marsh grahame.ma...@googlemail.com wrote: FLW on a 1 CRT is easy fbjfbgje.jpg And on a 3 CRT, 6 letters (or more) is practicable. To get nicely formed letters I'm using the sine/cosine drawing method (i.e. David Forbes scope clock). I'm guessing the letters in the picture of the 1 tube are not formed by sine/cosine. Raster, maybe? Can you share some details? - John -- You received this message because you are subscribed to the Google Groups neonixie-l group. To unsubscribe from this group and stop receiving emails from it, send an email to neonixie-l+unsubscr...@googlegroups.com. To post to this group, send an email to neonixie-l@googlegroups.com. To view this discussion on the web, visit https://groups.google.com/d/msgid/neonixie-l/F039982E-8713-4EB7-9578-4C54E48DE80F%40mac.com. For more options, visit https://groups.google.com/d/optout.
Re: [neonixie-l] FLW Clocks
My first published scope clock, you've seen it before http://www.sgitheach.org.uk/scope1.html pixel based just using two DACs to position the beam. Bresenham's algorithm to draw the lines. Display is 64 x 64 pixels on the 1 tube. To move forward I would certainly now use sine/cosine drawing. I store the words in an external eeprom, in the future I'm planning on using a SD card. Grahame On 18/04/2015 15:14, John Rehwinkel wrote: On Apr 16, 2015, at 9:26 AM, Grahame Marsh grahame.ma...@googlemail.com wrote: FLW on a 1 CRT is easy fbjfbgje.jpg And on a 3 CRT, 6 letters (or more) is practicable. To get nicely formed letters I'm using the sine/cosine drawing method (i.e. David Forbes scope clock). I'm guessing the letters in the picture of the 1 tube are not formed by sine/cosine. Raster, maybe? Can you share some details? - John -- You received this message because you are subscribed to the Google Groups neonixie-l group. To unsubscribe from this group and stop receiving emails from it, send an email to neonixie-l+unsubscr...@googlegroups.com. To post to this group, send an email to neonixie-l@googlegroups.com. To view this discussion on the web, visit https://groups.google.com/d/msgid/neonixie-l/55326CC5.805%40googlemail.com. For more options, visit https://groups.google.com/d/optout.
Re: [neonixie-l] Can I drive the INS-1 neon bulb with the SN74141 or KM155ID1 chip?
Thanks John! That is very helpful! So to avoid unwanted lit, what should I do? Can I just put a diode there to prevent the chip sourcing the bulb? On Saturday, April 18, 2015 at 10:13:40 AM UTC-4, jrehwin wrote: On Apr 18, 2015, at 4:06 AM, Chaos Hydra erguo...@gmail.com javascript: wrote: Hello! First time post here. So I am doing a nixie clock with IN-12 and KM155ID1 mux chip. The KM155ID1 is a nixie driver, not really a mux chip, although it can certainly be used in multiplex designs. To ensure the look, I decided to use INS-1 neon bulb to do the little colons between the digits. My questions is: can I drive the INS-1 bulb as I did to IN-12? With an 220k current limiting resistor under 170VDC, the INS bulb got 5mA. Considering IN-12 has 6mA without current limiting resistor, I think I can just use K155ID1 to sink in the current and control the neon bulbs. Yes, the chip won't mind at all. However, due to the clamp diodes, the off voltage is about 100V (60V for the US equivalent). With an ordinary nixie this is fine as long as another cathode is lit. However, for individual bulbs and nixies without any cathodes lit, that's enough voltage across the tube to possibly cause some unwanted glow. Consider I give most of my knowledge of digital parts' parameter back to professors, can any one please point out on the data sheet: when I am sinking current into the active low pin(to turn on an bulb or a single filament in nixie), which value is the maximum current? That does not appear to be given on the data sheet, however, it does say that when sinking 7mA, the voltage on an output pin will not exceed 2.5V, so 7mA is allowed by implication. - John On Saturday, April 18, 2015 at 10:13:40 AM UTC-4, jrehwin wrote: On Apr 18, 2015, at 4:06 AM, Chaos Hydra erguo...@gmail.com javascript: wrote: Hello! First time post here. So I am doing a nixie clock with IN-12 and KM155ID1 mux chip. The KM155ID1 is a nixie driver, not really a mux chip, although it can certainly be used in multiplex designs. To ensure the look, I decided to use INS-1 neon bulb to do the little colons between the digits. My questions is: can I drive the INS-1 bulb as I did to IN-12? With an 220k current limiting resistor under 170VDC, the INS bulb got 5mA. Considering IN-12 has 6mA without current limiting resistor, I think I can just use K155ID1 to sink in the current and control the neon bulbs. Yes, the chip won't mind at all. However, due to the clamp diodes, the off voltage is about 100V (60V for the US equivalent). With an ordinary nixie this is fine as long as another cathode is lit. However, for individual bulbs and nixies without any cathodes lit, that's enough voltage across the tube to possibly cause some unwanted glow. Consider I give most of my knowledge of digital parts' parameter back to professors, can any one please point out on the data sheet: when I am sinking current into the active low pin(to turn on an bulb or a single filament in nixie), which value is the maximum current? That does not appear to be given on the data sheet, however, it does say that when sinking 7mA, the voltage on an output pin will not exceed 2.5V, so 7mA is allowed by implication. - John On Saturday, April 18, 2015 at 10:13:40 AM UTC-4, jrehwin wrote: On Apr 18, 2015, at 4:06 AM, Chaos Hydra erguo...@gmail.com javascript: wrote: Hello! First time post here. So I am doing a nixie clock with IN-12 and KM155ID1 mux chip. The KM155ID1 is a nixie driver, not really a mux chip, although it can certainly be used in multiplex designs. To ensure the look, I decided to use INS-1 neon bulb to do the little colons between the digits. My questions is: can I drive the INS-1 bulb as I did to IN-12? With an 220k current limiting resistor under 170VDC, the INS bulb got 5mA. Considering IN-12 has 6mA without current limiting resistor, I think I can just use K155ID1 to sink in the current and control the neon bulbs. Yes, the chip won't mind at all. However, due to the clamp diodes, the off voltage is about 100V (60V for the US equivalent). With an ordinary nixie this is fine as long as another cathode is lit. However, for individual bulbs and nixies without any cathodes lit, that's enough voltage across the tube to possibly cause some unwanted glow. Consider I give most of my knowledge of digital parts' parameter back to professors, can any one please point out on the data sheet: when I am sinking current into the active low pin(to turn on an bulb or a single filament in nixie), which value is the maximum current? That does not appear to be given on the data sheet, however, it does say that when sinking 7mA, the voltage on an output pin will not exceed 2.5V, so 7mA is allowed by implication. - John On Saturday, April 18, 2015 at 10:13:40 AM UTC-4, jrehwin wrote: On Apr 18,
Re: [neonixie-l] Can I drive the INS-1 neon bulb with the SN74141 or KM155ID1 chip?
Thanks John! That is very helpful! So to avoid unwanted lit, what should I do? Can I just put a diode there to prevent the chip sourcing the bulb? On Saturday, April 18, 2015 at 10:13:40 AM UTC-4, jrehwin wrote: On Apr 18, 2015, at 4:06 AM, Chaos Hydra erguo...@gmail.com javascript: wrote: Hello! First time post here. So I am doing a nixie clock with IN-12 and KM155ID1 mux chip. The KM155ID1 is a nixie driver, not really a mux chip, although it can certainly be used in multiplex designs. To ensure the look, I decided to use INS-1 neon bulb to do the little colons between the digits. My questions is: can I drive the INS-1 bulb as I did to IN-12? With an 220k current limiting resistor under 170VDC, the INS bulb got 5mA. Considering IN-12 has 6mA without current limiting resistor, I think I can just use K155ID1 to sink in the current and control the neon bulbs. Yes, the chip won't mind at all. However, due to the clamp diodes, the off voltage is about 100V (60V for the US equivalent). With an ordinary nixie this is fine as long as another cathode is lit. However, for individual bulbs and nixies without any cathodes lit, that's enough voltage across the tube to possibly cause some unwanted glow. Consider I give most of my knowledge of digital parts' parameter back to professors, can any one please point out on the data sheet: when I am sinking current into the active low pin(to turn on an bulb or a single filament in nixie), which value is the maximum current? That does not appear to be given on the data sheet, however, it does say that when sinking 7mA, the voltage on an output pin will not exceed 2.5V, so 7mA is allowed by implication. - John -- You received this message because you are subscribed to the Google Groups neonixie-l group. To unsubscribe from this group and stop receiving emails from it, send an email to neonixie-l+unsubscr...@googlegroups.com. To post to this group, send an email to neonixie-l@googlegroups.com. To view this discussion on the web, visit https://groups.google.com/d/msgid/neonixie-l/9143a5b6-fc25-4b04-983f-09cc8270bc4c%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
Re: [neonixie-l] Can I drive the INS-1 neon bulb with the SN74141 or KM155ID1 chip?
If you want to light up a neon bulb, with that chip, add an extra 220K resistor. Hook it up in parallel with the neon bulb. That should keep any leakage current, when off, from hitting a level to fire the neon. On Saturday, April 18, 2015 at 9:55:02 AM UTC-7, Chaos Hydra wrote: Thanks John! That is very helpful! So to avoid unwanted lit, what should I do? Can I just put a diode there to prevent the chip sourcing the bulb? On Saturday, April 18, 2015 at 10:13:40 AM UTC-4, jrehwin wrote: On Apr 18, 2015, at 4:06 AM, Chaos Hydra erguo...@gmail.com wrote: Hello! First time post here. So I am doing a nixie clock with IN-12 and KM155ID1 mux chip. The KM155ID1 is a nixie driver, not really a mux chip, although it can certainly be used in multiplex designs. To ensure the look, I decided to use INS-1 neon bulb to do the little colons between the digits. My questions is: can I drive the INS-1 bulb as I did to IN-12? With an 220k current limiting resistor under 170VDC, the INS bulb got 5mA. Considering IN-12 has 6mA without current limiting resistor, I think I can just use K155ID1 to sink in the current and control the neon bulbs. Yes, the chip won't mind at all. However, due to the clamp diodes, the off voltage is about 100V (60V for the US equivalent). With an ordinary nixie this is fine as long as another cathode is lit. However, for individual bulbs and nixies without any cathodes lit, that's enough voltage across the tube to possibly cause some unwanted glow. Consider I give most of my knowledge of digital parts' parameter back to professors, can any one please point out on the data sheet: when I am sinking current into the active low pin(to turn on an bulb or a single filament in nixie), which value is the maximum current? That does not appear to be given on the data sheet, however, it does say that when sinking 7mA, the voltage on an output pin will not exceed 2.5V, so 7mA is allowed by implication. - John -- You received this message because you are subscribed to the Google Groups neonixie-l group. To unsubscribe from this group and stop receiving emails from it, send an email to neonixie-l+unsubscr...@googlegroups.com. To post to this group, send an email to neonixie-l@googlegroups.com. To view this discussion on the web, visit https://groups.google.com/d/msgid/neonixie-l/40811843-8a9c-4aee-90cf-9de637860703%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
Re: [neonixie-l] Can I drive the INS-1 neon bulb with the SN74141 or KM155ID1 chip?
Thanks! trying it right now! -- You received this message because you are subscribed to the Google Groups neonixie-l group. To unsubscribe from this group and stop receiving emails from it, send an email to neonixie-l+unsubscr...@googlegroups.com. To post to this group, send an email to neonixie-l@googlegroups.com. To view this discussion on the web, visit https://groups.google.com/d/msgid/neonixie-l/5bb2504a-b132-4cf0-96df-349551c3730f%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
[neonixie-l] Re: Supertex HV* library for Diptrace or Eagle?
They have them at Mouser. Part # 806-PX-44LCC Here's the data sheet: http://www.mouser.com/ds/2/222/PXLCC-334777.pdf It doesn't show the grid pinout. I'd suggest you buy the sockets first, and ohm out the pin out, yourself. I used sockets like this, from Mill-Max, over 20 years ago. They can have at least two patterns, for the same package. Mill-Max listed them as two separate part numbers. Once you have your pinout, you'll have to enter it, as a new part, in your library. If you ask just for it as the IC, people may provide you a footprint, as an unsocketed PLCC, or QFP. Neither, of which, you really want. You want the pattern, for the socketed part, which will be dependent on the socket you get. Unfortunately, I can provide neither. I use a very old copy of OrCad, and I've never used this chip. I have used thru-hole socketed PLCCs. I have OrCad library patterns for a MACH210. Good luck tracking down, that chip. Built a whole clock, just with that one chip ! LED, not Nixie. On Friday, April 17, 2015 at 3:52:42 AM UTC-7, Mitch wrote: I will socket the chips because with lack of experience, I have no doubt that many chips will be sacrificed before this actually works. I found a pattern for the PLCC socket so at this point I should be able to add the HV5522 to the Diptrace library without problems. I need three chips for this project, which will use seven nixies. Mitch On Thursday, April 16, 2015 at 1:15:34 PM UTC-4, threeneurons wrote: Are you going to put that PLCC into a socket, or solder it directly to the PCB. You can get thru-hole sockets for PLCCs. The sockets, then have pins on a 0.1 center grid. If directly soldered, I prefer the QFP over the PLCC. Yes, the pitch is narrower (0.031 versus 0.050), but the PLCC pins curl under the chip. Recently, I made a circuit, that uses those old style 7-segment LCDs, like those found on DVMs. National (now TI) makes a 32-segment driver for it, but it only comes in a 40-pin DIP, or 44-pin PLCC. I didn't like either, so I programmed a mega8515 to mimic it. Difference, used the serial port (1 IO vs 2), and 44-pin TQFP. On Wednesday, April 15, 2015 at 7:03:48 PM UTC-7, Mitch wrote: Thank you. Import worked fine. I need the PLCC version, but changing the pattern should not be a problem. Mitch On Wednesday, April 15, 2015 at 3:09:28 PM UTC-4, zac wrote: See attached. I think everything you need is there, but if not, let me know. I haven't done much exporting from diptrace. On Wednesday, April 15, 2015 at 4:58:07 AM UTC-7, Mitch wrote: That would be great! Thank you. Mitch On Wednesday, April 15, 2015 at 12:54:42 AM UTC-4, zac wrote: I made one in diptrace for the HV5622, and can upload if you would like. On Tuesday, April 14, 2015 at 10:00:35 AM UTC-7, Mitch wrote: Does anyone know if these libraries exist? I've searched and haven't found anything. I'm looking for the HV5530, HV5812, and HV5523. Thanks. Mitch -- You received this message because you are subscribed to the Google Groups neonixie-l group. To unsubscribe from this group and stop receiving emails from it, send an email to neonixie-l+unsubscr...@googlegroups.com. To post to this group, send an email to neonixie-l@googlegroups.com. To view this discussion on the web, visit https://groups.google.com/d/msgid/neonixie-l/3660ac22-c465-4022-8714-3c60f08c1541%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
Re: [neonixie-l] Can I drive the INS-1 neon bulb with the SN74141 or KM155ID1 chip?
OK, I tried the method mentioned by Threeneurons. It does not seems be working. I tried to put a 1n4001 diode in series to limit the current, seems not working either. Have anybody have done this procedure before? -- You received this message because you are subscribed to the Google Groups neonixie-l group. To unsubscribe from this group and stop receiving emails from it, send an email to neonixie-l+unsubscr...@googlegroups.com. To post to this group, send an email to neonixie-l@googlegroups.com. To view this discussion on the web, visit https://groups.google.com/d/msgid/neonixie-l/86535fe0-e1fb-4d9c-aab5-ef9393f5804a%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
[neonixie-l] Re: FLW Clocks
I would do that for you. How many have you got? On Friday, April 17, 2015 at 5:26:47 AM UTC-7, Greg P wrote: I wish someone would build a kit that uses the 5971 Alpha tube. I have a stash of these just waiting to be lit. -- You received this message because you are subscribed to the Google Groups neonixie-l group. To unsubscribe from this group and stop receiving emails from it, send an email to neonixie-l+unsubscr...@googlegroups.com. To post to this group, send an email to neonixie-l@googlegroups.com. To view this discussion on the web, visit https://groups.google.com/d/msgid/neonixie-l/66bdf811-13f7-4c3e-abb5-f53545aebfe0%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
