Model K Pico-0.2

TrojanPinata·Model-K-Pico·PCB/Model K Pico-0.2.kicad_pcb

About the Model K Pico-0.2 PCB

Model K Pico-0.2 is an open source RP2040/RP2350 PCB design by TrojanPinata, published on GitHub under the GPL-3.0 license. It is a 2-layer board measuring 312.1 × 160 mm, with 173 components from 16 distinct parts.

Its main chip is the Pico, from the RP2040/RP2350 family. By type, the board carries 83 switches, 82 diodes and 5 resistors.

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

From the project

A 75% Keyboard based on the Raspberry Pi Pico (RP2040) and custom hardware

I think it has come out pretty decent minus some cracks in the switchplate (because 1.5mm acrylic is really thin) and a misplaced screw hole. I couldnt find M2 screws short notice either so I ended up drilling out the holes to be larger (which was a mistake and I would not do again). I think it looks good, it sounds good, and most of all it works. The only thing I need is some pads to keep it from slipping :).

Model K Pico-0.2, from the project README — From the project README

Model K Pico-0.2 bill of materials (BOM)

173 components, 16 distinct parts — part numbers from the project's BOM.

Qty	Part	Footprint	Refs
1	Conn_01x04	PinSocket_1x04_P2.54mm_Vertical	I2CHeader1
1	Pico	RPi_Pico_SMD_TH	RPI1
1	LED	Omron-B3F-3122-MFG	SW1
2	KEYSW	MXOnly-1.5U-NoLED	SW-1.5U-28, SW-1.5U-41
3	KEYSW	MXOnly-1.25U-NoLED	SW-1.25U-70, SW-1.25U-71, SW-1.25U-72
2	KEYSW	MXOnly-1.75U-NoLED	SW-1.75U-43, SW-1.75U-68
70	KEYSW	MXOnly-1U-NoLED	SW-1U-0, SW-1U-1, SW-1U-2, SW-1U-3, SW-1U-4, SW-1U-5, SW-1U-6, SW-1U-7 +62
2	KEYSW	MXOnly-2.25U-NoLED	SW-2.25U-55, SW-2.25U-57
1	KEYSW	MXOnly-2U-NoLED	SW-2U-26
1	KEYSW	MXOnly-6.25U-NoLED	SW-6.25U-73
1	RESET	Omron-B3F-3122-MFG	SW-BUTTON1
1	HRO-TYPE-C-31-M-12	USB_C_GCT_USB4085	USB1
82	D	D_DO-35_SOD27_P5.08mm_Horizontal	D0, D1, D2, D3, D4, D5, D6, D7 +74
2	5.1k	R_Axial_DIN0204_L3.6mm_D1.6mm_P7.62mm_Horizontal	R1, R2
1	47K Resistor 0402	R_Axial_DIN0204_L3.6mm_D1.6mm_P7.62mm_Horizontal	R3
2	10k	R_Axial_DIN0204_L3.6mm_D1.6mm_P7.62mm_Horizontal	R4, R5

Model K Pico-0.2 design files

The KiCad project lives in the TrojanPinata/Model-K-Pico repository on GitHub; these links point at the commit this page was built from.

Model K Pico-0.2: common questions

What microcontroller does the Model K Pico-0.2 use?

The Model K Pico-0.2 is built around the Pico, from the RP2040/RP2350 family.

How big is the Model K Pico-0.2 PCB?

The Model K Pico-0.2 measures 312.1 × 160 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Model K Pico-0.2?

173 components, from 16 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 Model K Pico-0.2 design files?

From the TrojanPinata/Model-K-Pico 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 Model K Pico-0.2 design in my own project?

Yes, under the terms of its GPL-3.0 license, which TrojanPinata chose for the repository.

Can I test firmware for the Model K Pico-0.2 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.