Very cool! Terry
On Thursday, November 29, 2018 at 7:10:04 AM UTC-6, meganie8 wrote: > > Not Nixie but still Neon: > > I were able to buy 300 Osram LG234TR Neon Glow Lamps very cheaply and I > wanted to build a clock using them in a 7-Segment arrangement. > Before I started with this project I had no idea how to use a Raspberry Pi > or write Python code. I hacked the code together after reading python > tutorials for a few days and this > <https://github.com/meganie/Neon-Glow-Lamp-Clock/blob/master/Clock.py> is > the result. > I used 228 of the Osram LG234TR Neon Glow Lamps. They have a built-in > resistor and you can connect them directly to the mains. Power consumption > is around 0,7 mA per bulb. > Each segment is connected to a separate relay which are controlled by a > Raspberry Pi. > > I bought: > 1. Raspberry Pi 3B+ > 2. ModMyPi MCP23017 - 32 Channel I/O Expansion HAT > <https://www.modmypi.com/raspberry-pi/iousbanalogue-expansion-1028/gpio-expansion-boards-1029/modmypi-mcp23017-hat-32-channel-io-expansion-hat> > > to have enough outputs to control 29 relays > 3. 4 8-Channel 5V Solid State Relay Boards > <https://www.amazon.de/dp/B01E6KUCDY/ref=cm_sw_em_r_mt_dp_U_KGi-Bb9P9M5TK> > 4. MEANWELL RS-35-5 5V/7A > <https://www.meanwell.com/webapp/product/search.aspx?prod=RS-35> Power > Supply to power the Raspberry Pi, the hat and the 4 relay boards (A 5A > supply would have been more than enough) > 5. 228 E10 bulb sockets > 6. USB and HDMI expansion cables > 7. a bunch of screws and washers > > Solid state relay boards are more expensive than regular relay boards but > I wanted silent operation and no relay clicks once per minute. > > > > [image: 20181123_183410.jpg] > > [image: 20181122_152347.jpg] > > [image: 20181025_134354.jpg] > > > -- 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 [email protected]. To post to this group, send an email to [email protected]. To view this discussion on the web, visit https://groups.google.com/d/msgid/neonixie-l/d9124c1b-02bd-404b-9a72-973f570e4d9b%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
