Sheaf65

nxrmqlly·sheaf65·Hardware/PCB/sheaf65.kicad_pcb

About the Sheaf65 PCB

Sheaf65 is an open source RP2040/RP2350 PCB design by nxrmqlly, published on GitHub under the CERN-OHL-S-2.0 license. It is a 2-layer board measuring 318 × 134 mm, with 142 components from 11 distinct parts.

Its main chip is the RP2040_PRO_MICRO, from the RP2040/RP2350 family. By type, the board carries 70 diodes, 68 switches, 1 IC and 1 connector.

It belongs with the keyboards and displays & leds designs in this gallery.

From the project

a stupid minimal 65% keyboard

A barebones, hackable, opinionated, ansi 65% layout keyboard. The Backspace key and the Grave key swapped due to personal preferences.

The Keyboard is designed to be very bare bones and it is basically 3 layers - The switchplate (top), The PCB (Middle), and The Backplate (Bottom) - kind of like a sandwich mounted keyboard.

The switchplate ("plate") and the backplate are to be 3D printed and engineered. The whole "sandwich" is held together with 10 M2x10mm brass spacers and one M2x6mm brass spacer.

Sheaf65, from the project README — From the project README

Main components on the Sheaf65

RP2040_PRO_MICRO

Sheaf65 bill of materials (BOM)

142 components, 11 distinct parts — part numbers from the project's BOM.

Qty	Part	Footprint	Refs
1	RP2040_PRO_MICRO RP2040_Pro_Micro	RP2040_Pro_Micro	U1
1	OLED_128X32 OLED_128x32	SSD1306-0.91-OLED-4pin-128x32	J1
2	RotaryEncoder_Switch	RotaryEncoder_Alps_EC11E-Switch_Vertical_H20mm	RESW1, RESW2
57	SW_PUSH_45DEG SW_Push_45deg	SW_Hotswap_Kailh_MX_1.00u	SW1, SW2, SW3, SW4, SW5, SW6, SW7, SW8 +49
1	SW_PUSH_45DEG SW_Push_45deg	SW_Hotswap_Kailh_MX_2.00u	SW14
2	SW_PUSH_45DEG SW_Push_45deg	SW_Hotswap_Kailh_MX_1.50u	SW16, SW29
2	SW_PUSH_45DEG SW_Push_45deg	SW_Hotswap_Kailh_MX_1.75u	SW31, SW56
2	SW_PUSH_45DEG SW_Push_45deg	SW_Hotswap_Kailh_MX_2.25u	SW43, SW45
3	SW_PUSH_45DEG SW_Push_45deg	SW_Hotswap_Kailh_MX_1.25u	SW59, SW60, SW61
1	SW_PUSH_45DEG SW_Push_45deg	SW_Hotswap_Kailh_MX_6.25u	SW62
70	1N4148	D_DO-35_SOD27_P7.62mm_Horizontal	D1, D2, D3, D4, D5, D6, D7, D8 +62

Sheaf65 design files

The KiCad project lives in the nxrmqlly/sheaf65 repository on GitHub; these links point at the commit this page was built from.

Sheaf65: common questions

What microcontroller does the Sheaf65 use?

The Sheaf65 is built around the RP2040_PRO_MICRO, from the RP2040/RP2350 family.

How big is the Sheaf65 PCB?

The Sheaf65 measures 318 × 134 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Sheaf65?

142 components, from 11 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 Sheaf65 design files?

From the nxrmqlly/sheaf65 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 Sheaf65 design in my own project?

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

Can I test firmware for the Sheaf65 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.