This contains the Gerber for the PCB and STL/3mf files for the enclosure.
All components are through-hole except for the hot-swap sockets.
| Component | Quantity | Note |
|---|---|---|
| Arduino Pro Micro | 1 | |
| 0.91" 128x32 OLED | 1 | requires hand-wiring |
| 24LC256 EEPROM | 1 | |
| 6x6 tactile momentary switch | 1 | 5mm or 4.3mm height |
| EC11 Rotary Encoder (clickable) | 1 | + knob |
| 1N4148 diodes | 10 | |
| MX-style switches | 10 | + keycaps |
| 1k resistor | 1 | |
| MX hotswap sockets | 10 | |
| m2x8 screws | 4 | for enclosure |
| m2x4 screws | 4 | for enclosure |
| m2 5mm standoffs | 4 | for enclosure |
| m2 nuts | 4 | for enclosure |
The following is an overview of assembling the macropad. You can find more detailed instructions here.
- Begin by mounting 3x3 matrix diodes (D1-D9) and hotswap sockets to underside
of board (where their labels are). Solder these in place.
- The hotswap sockets are easiest to solder when you put a small amount of solder on the pad, then place the socket and heat the pad.
- The D10 diode will be soldered on top of the board.
- It's easier to solder the hotswap sockets first, so that you don't have to worry about the board sitting stably while soldering these.
- Next, mount the D10 diode, the resistor (R-RESET) to top of board. Solder in place.
- Mount the EEPROM, reset switch, and rotary encoder on top of the board; solder them in place.
- Solder headers facing upward on Pro Micro, then mount to bottom of PCB (see completed picture).
- Use wires to connect sda/scl/vcc/gnd to the corresponding pins on the 128x32 OLED. The OLED will be mounted to the inside of the enclosure, so make sure the wires are long enough to reach, but short enough to fit under the OLED once it is mounted.
- Assemble the bottom of the enclosure, mounting the PCB to the standoffs.
- Put the nuts in the bottom of the case (you may have to push hard to push them in--they should be snug).
- Screw in the standoffs, then slide the PCB into the bottom of the enclosure.
- Screw 4 m2x4 screws to mount the PCB inm place.
- Put the switch plate on (do not screw in place) and mount switches in hotswap sockets.
- Program the firmware, if the pro micro is not pre-programmed. Follow the
instructions in
firmware/. - Tape or otherwise affix the OLED to the inside of the top of the enclosure, then mount the enclosure. Screw it in place with 4 m2x8 screws. Put the encoder knob on.
