Muon kbd

Dekanova·muon-kbd·pcb/muon.kicad_pcb

About the Muon kbd PCB

Muon kbd is an open source RP2040/RP2350 PCB design by Dekanova, published on GitHub under the CERN-OHL-S-2.0 license. It is a 2-layer board measuring 72 × 59 mm, with 54 components from 23 distinct parts.

Its main chip is the RP2040, from the RP2040/RP2350 family. Other key parts include the SRV05-4, TLV75533PDBVR and W25Q80DVSSIG. By type, the board carries 23 capacitors, 10 resistors, 7 switches, 4 ICs, 3 LEDs and 3 diodes.

From the project

Simple OSU! keypad

Feel free to make a PR if you get other firmware working on this board!

- RP2040 (easy firmware changes) - hybrid MX/low profile choc hotswap socket - rgb keyglow & underglow - usb-c

- Kicad 6.0 - openinput library from kicad content&lib manager

A huge thanks to openinput for their generic KiCad lib.

Also thanks to marbastlib for their component lib.

This project is licenced under CERN Open Hardware Licence v2 - Strongly Reciprocal see usage guide for more info

Muon kbd, from the project README — From the project README

Main components on the Muon kbd

SRV05-4 TLV75533PDBVR RP2040 W25Q80DVSSIG

Muon kbd bill of materials (BOM)

54 components, 23 distinct parts — part numbers from the project's BOM.

Qty	Part	Footprint	Refs
1	SRV05-4	SOT-23-6-routable	U1
1	TLV75533PDBVR	SOT-23-5	U2
1	RP2040	QFN-56-1EP_7x7mm_P0.4mm_EP3.2x3.2mm	U3
1	W25Q80DVSSIG	W25Q_SOIC-8	U4
1	Crystal_GND24_Small	Crystal_SMD_3225-4Pin_3.2x2.5mm	Y1
1	USB_C_Receptacle_USB2.0	USB_C_Receptacle_HRO_TYPE-C-31-M-12	J2
1	500mA	Fuse_0402_1005Metric	F1
3	TS-1187A-B-A-B	SW_TS-1187A-B-A-B	S1, S2, S3
3	Kailh Hotswap	SW_Hotswap_Hybrid_1.00u	SW1, SW2, SW7
1	Reset	SW_SPST_PTS810	SW3
3	SK6812MINI-E	LED_6028R	LED1, LED2, LED3
2	WS2812B	LED_WS2812B_PLCC4_5.0x5.0mm_P3.2mm	D1, D2
1	STATUS LED	LED_0402_1005Metric	D3
1	BLM18HE152SN1D	L_0603_1608Metric	FB1
2	5pF	C_0402_1005Metric	C1, C5
4	1uF	C_0402_1005Metric	C2, C3, C12, C20
17	100nF	C_0402_1005Metric	C4, C6, C7, C8, C9, C10, C11, C13 +9
1	1k	R_0402_1005Metric	R1
2	220	R_0402_1005Metric	R2, R5
2	5.1k	R_0402_1005Metric	R3, R4

Show 3 more

Qty	Part	Footprint	Refs
2	27	R_0402_1005Metric	R6, R7
2	10k	R_0402_1005Metric	R8, R9
1	1M	R_0402_1005Metric	R10

Muon kbd design files

The KiCad project lives in the Dekanova/muon-kbd repository on GitHub; these links point at the commit this page was built from.

Muon kbd: common questions

What microcontroller does the Muon kbd use?

The Muon kbd is built around the RP2040, from the RP2040/RP2350 family.

How big is the Muon kbd PCB?

The Muon kbd measures 72 × 59 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Muon kbd?

54 components, from 23 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.

Where can I download the Muon kbd design files?

From the Dekanova/muon-kbd repository on GitHub, which has the KiCad layout, the schematic and the BOM; the links under Design files point to each one.

Can I use the Muon kbd design in my own project?

Yes, under the terms of its CERN-OHL-S-2.0 license, which Dekanova chose for the repository.

Can I test firmware for the Muon kbd without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug RP2040/RP2350 firmware against it before you order a PCB.