Well done!
I'd be interested in the schematic for the high voltage psu- have been
toying with using the 34063 for that myself.
DaveB, NZ
----- Original Message -----
From: "newxito" <[email protected]>
To: "neonixie-l" <[email protected]>
Sent: Tuesday, September 27, 2016 10:18 AM
Subject: [neonixie-l] First nixie clock
Hi, I’m new in the forum. I’ve finally managed to build my first nixie
clock. It’s a 6-digit clock with 4 x Z5660M and 2 x IN-8 nixies.
I’ve decided to build the clock with direct drive so I’ve used 8 x 74HC595
and 64 x MPSA42 transistors.
The controller is a Atmega 328P, the 170V psu was made with a MC34063,
coil, transistor and mosfet. The psu seems to work fine, no audible noise
and the components remain cool.
I had no idea how to shut down the 170V so I’ve used a relay to cut the 12V
supply to the 170V psu. I’m sure there must be a better way to do this.
Finally, I’ve added a GPS time sync, a motion sensor and a mp3 module, the
clock plays a sound every hour.
I was surprised how easy it was to write the software. In the latest
release I’ve implemented a simple cathode poisoning prevention function
(just heard about this problem). For the next release I have planned to use
the pps signal for a more accurate GPS time synchronization.
I know, the whole thing looks like a nightmare… but it works :-)
Regards
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