Drop Mech Keys Meetup Recap - Thanks for Visiting!
As you may have seen, we just hosted our first meetup in quite a while here at Drop HQ (Corsair HQ, but they seem to like us enough :) )! It was a blast to get to meet so many enthusiasts local to the bay area—it had been 10 years since I was last hanging out with keyboard nerds in the bay, at KeyCon 2014. We had a great time hosting everyone at the offices, checking out all the very nice boards y'all brought, and sharing some of our own projects/spaces! I knew it would be fun to host in the Game Room when I first saw it in person, but seeing it come to fruition was still so cool. Alright, I'll stop blabbering on now. xD Picture time! (Oh, real quick - there will be more of these! Stay tuned for more info and to catch the next one!)
May 15, 2024
Fuse is placed in the circuit to cut of somewhere between 0.5 to 1.1 ampere.
You can find the pin layout of the keyswitches on github.com/qmk/qmk_firmware/keyboards/knops/mini/ (I am not sure if this link is completely correct, currently on mobile)
The link is https://github.com/qmk/qmk_firmware/tree/master/keyboards/knops/mini ;) I much prefer reading a schematic over digging the info out of source code, hence my asking. Esp. since it's more than just the switches -- LED's, speaker, HWB (going to replace the bootloader), to name a few of the top of my head.
Edit: got it working after taking it apart and measuring some continuity -- turns out that the sequence "Miso, Vcc, SCK, Mosi, Reset, Ground" is from right to left when looking at the pins. :/
Each keyswitch has a led as well. These are connected to a gpio of the 32u4 on one side and ground on the other
The three layerleds are a bit different regarding to keyswitch leds in that the first and third is connected to a gpio pin on one side and Vcc on the other. The second layer led is connected to a gpio pin and ground. This has to do with arduino compatibility, layerled 1 and 3 replace the RX and TX leds you will normally find on the Arduino Leonardo.
The speaker is connected to two pins, so that you can make multiple tones at the same time.
pins per keyswitch: keyswitch 1: PF7 keyswitch 2: PF6 keyswitch 3: PF5 keyswitch 4: PF4 keyswitch 5: PF1 keyswitch 6: PF0
pins per led (for keyswitches): led 1: PD7 led 2: PC7 led 3: PD4 led 4: PE6 led 5: PB4 led 6: PD6
pins per led (for layer indication): led 1: PD5 (to Vcc) led 2: PB6 (to Gnd) led 3: PB0 (to Vcc)
pins for speaker: one side: PC6 other side: PB5