Massdrop x Data SA Danger Zone Custom Keycap Set Discussions | Drop

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Massdrop x Data SA Danger Zone Custom Keycap Set

Mar 26, 2016

Just some updates. I didn't get to touch this for a full month. Very busy at two jobs... I got the Caps Lock key the way I want it. I got all the LEDs wired (the one that is un-lit in the pic was not yet wired at the moment I took the picture, all work now). The LEDs don't get super bright, which is fine by me. I want the effect to be subtle. The benefit, is I'm not even maxing out the power draw on USB. I can plug this into USB, and still have enough power for another small accessory to share the bus (like a gamepad)! I have the teensy physically, installed, and there are now only 20 wires left to cut and install. After that, I will lace the loose wires and install the bottom panel. I'll remove the trim to do the lacing, so I have good clearance to thread the cord under the wire bundles. When finished, I'll reinstall the trim, and solder the final 5 wires. There is now a small pc board int he top left corner, next to the magnetic connector. It allows me to easily desolder the connector's leads, without having to cut wires, or unthread laced wires, should I ever need to service the keyboard.
After that, it's all software. The magnetic connector has power and ground, the two wires of an I2C bus, and one sense wire. The sense wire is pulled to ground in the keyboard. When the future number pad is attached, the number pad will pull the sense wire high. I need to make the software skip the I2C communications when the sense line is low.
Considering how new I am to programmnig in C, I'll take any advice given. Last time I actually did any real programming, it was on a TI-89 and a Commodore 128. O_o