Nixie Countdown

AmmoMFG.

2 layer board of 3.25x3.25 inches (82.63x82.63 mm).
Shared on November 22nd, 2016 07:14.

Countdown Clock Supporting Multiple Nixie Tube Display

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Halibut Transport v1.0a

SmittyHalibut.

2 layer board of 3.76x2.21 inches (95.40x56.03 mm).
Shared on November 22nd, 2016 07:10.

A USB “keyboard” with just the Media keys. Really, you can program it for any keys you want, but I built it for the media keys my keyboard doesn’t have.

Buttons are PCB mount Cherry MX switches, of your favorite color. I like Browns
You’ll probably also want some key caps. This kit includes several options for media keys.
The rotary encoder is also a pretty common part, but here’s an example.
Microcontroller is an SparkFun Pro Micro
The socket is a 24 pin “wide” socket, with the pins bent out so they can be soldered surface mount. It’s easier with the cheaper sockets rather than the really nice machined pin sockets.
Buttons are pretty standard SMD 6x3x4.3mm buttons, for example.
Passives are all standard 1206 bits, as marked on the board. Nothing is critical, 5% resistors and 10% caps are fine. Use your cheap crap here, not your good 1% components.
- I’m realizing I didn’t label the bypass caps next to the WS2812Bs. They’re all .1uF, like all the other caps on the board.
The LEDs in the Cherries and immediately on either side of the rotary encoder are standard 3mm LEDs of your favorite color.
The RGB LEDs on the “controls” side of the board are WS2812B (The Adafruit link provided are SK6812, but they’re compatible.)
The board is sized to fit in my favorite cheap plastic project case. Having said that, I think I’m going to make a laser cut wooden panel to sandwich the PCB with stand-offs. I’ll post a link here when I’ve done something.