Challenger

A 35-key gaming keypad powered by ZMK.

Features

• 35 MX-compatible keys
• Wireless (nice!nano)
• nice!view display
• Hotswap sockets

Bill of Materials

PCB

Qty	Part	Description
1	Challenger PCB
35	MX switches (of your choice)
35	Kailh MX hot-swap sockets	Switch sockets
35	1N4148W diodes	SMD switch diodes
1	nice!nano v2	Wireless microcontroller
2	Mill-Max 315-43-112-41-003000	Female header, 12-pin, microcontroller socket
2	Mill-Max 350-10-112-00-006000	Pin header, 12-pin, microcontroller socket
1	Panasonic EVQ-PUL02K	Tactile switch, as the reset button
1	Alps Alpine SSSS811101	Slide switch, as the power switch
1	3.7v 110mAh 301230 LiPo battery	Positive terminal must be on the right side of the connector
1	JST S2B-PH-K-S	Battery connector, 2-pin

The EVQ-PUJ02K, the EVQ-PUA02K, or the EVQ-PUC02K could be used instead for the reset button, since they only differ in operating force or boss (aligning plastic tab on the underside).

The battery connector model number can have a different last letter or no at all (e.g. S2B-PH-K-K, S2B-PH-K-H, S2B-PH-K), which only represents its color.

Case

Qty	Part	Description
1	Switch plate PCB
1	Bottom plate PCB
4	M2 x 7 mm standoffs	Case standoffs
8	M2 x 5 mm screws	Case screws

M2 x 4 mm screws might be able to be used instead of the M2 x 5 mm screws.

Display

The display cover has not been designed yet. Some parts listed are for future reference.

Qty	Part	Description
1	nice!view	Display
2	M2 x 10 mm standoffs	Cover standoffs
2	M2 x 5 mm screws	Cover standoff screws

M2 x 4 mm screws might be able to be used instead of the M2 x 5 mm screws.

Firmware

Built with ZMK.

License

MIT