14keypad

tommasogualtierotti·14keypad·v1/14keypad.kicad_pcb

About the 14keypad PCB

14keypad is an open source RP2040/RP2350 PCB design by tommasogualtierotti, published on GitHub under the CC0-1.0 license. It is a 2-layer board measuring 82.5 × 82.5 mm, with 72 components from 20 distinct parts.

Its main chip is the RP2040, from the RP2040/RP2350 family. Other key parts include the AMS1117-3.3_SOT223 and W25Q128JVS. By type, the board carries 24 diodes, 16 switches, 16 capacitors, 9 resistors, 3 ICs and 1 crystal.

It belongs with the keyboards designs in this gallery.

From the project

12-key Macropad with 2 rotary encoder based on RP2040, programmable, running KMK firmware

Main components on the 14keypad

RP2040 AMS1117-3.3_SOT223 W25Q128JVS

14keypad bill of materials (BOM)

72 components, 20 distinct parts — part numbers from the project's BOM.

Qty	Part	Footprint	Refs
1	RP2040	RP2040-QFN-56	U1
1	AMS1117-3.3_SOT223 NCP1117-3.3_SOT223	SOT-223-3_TabPin2	U2
1	W25Q128JVS	SOIC-8_5.23x5.23mm_P1.27mm	U4
1	12MHZ 12MHz	Crystal_SMD_3225-4Pin_3.2x2.5mm	Y1
1	USB_C_RECEPTACLE_USB2.0 USB_C_Receptacle_USB2.0	USB_C_Receptacle_XKB_U262-16XN-4BVC11	J1
2	Encoder_Switch	RotaryEncoder_Alps_EC11E-Switch_Vertical_H20mm	ENC1, ENC2
14	KEY_MX	SW_Cherry_MX_1.00u_PCB_UPDATED_FOOTPRINT_RIGHT_PIN_ASSIGNMENT	SW1, SW2, SW3, SW4, SW5, SW6, SW7, SW8 +6
2	SW_SPST	SW_Push_1P1T_XKB_TS-1187A	SW15, SW16
16	C81598 D	D_SOD-123	D1, D2, D3, D4, D5, D6, D7, D8 +8
8	LED	D_0805_2012Metric	D17, D18, D19, D20, D21, D22, D23, D24
10	100N 100n	C_0402_1005Metric	C1, C2, C3, C4, C5, C6, C7, C8 +2
2	1u	C_0402_1005Metric	C10, C11
2	10U 10u	C_0603_1608Metric	C12, C13
2	30P 30p	C_0402_1005Metric	C14, C15
2	27	R_0603_1608Metric	R1, R2
1	10K 1k	R_0402_1005Metric	R3
2	5K1 5k1	R_0402_1005Metric	R4, R5
1	1k	R_0402_1005Metric	R6
1	10K 10k (DNP)	R_0402_1005Metric	R7
2	15Ω	R_0805_2012Metric	R8, R9

14keypad design files

The KiCad project lives in the tommasogualtierotti/14keypad repository on GitHub; these links point at the commit this page was built from.

14keypad: common questions

What microcontroller does the 14keypad use?

The 14keypad is built around the RP2040, from the RP2040/RP2350 family.

How big is the 14keypad PCB?

The 14keypad measures 82.5 × 82.5 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the 14keypad?

72 components, from 20 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 14keypad design files?

From the tommasogualtierotti/14keypad 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 14keypad design in my own project?

Yes, under the terms of its CC0-1.0 license, which tommasogualtierotti chose for the repository.

Can I test firmware for the 14keypad 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.