Hellboard

frfrh·Hellboard·PCB/Hellboard.kicad_pcb

About the Hellboard PCB

Hellboard is an open source RP2040/RP2350 PCB design by frfrh, published on GitHub under the GPL-2.0 license. It is a 2-layer board measuring 116.6 × 40 mm, with 22 components from 8 distinct parts.

Its main chip is the RP2040-ZERO, from the RP2040/RP2350 family. By type, the board carries 8 diodes, 8 capacitors, 2 resistors, 1 IC, 1 transistor and 1 connector.

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

From the project

This is a Macro board based on RP2040-zero and Micropython, meant for ordering Stratagems for Helldivers 2 by registering as a HID-Keyboard.

Contains the firmware to be loaded into the RP2040 and the Micropython project files.

Contains the 3D files for the case and the button caps.

Contains the project files for the PCB and the gerber files to order one. Project is based on KiCad 8.0.2.

Main components on the Hellboard

RP2040-ZERO

Hellboard bill of materials (BOM)

22 components, 8 distinct parts — part numbers from the project's BOM.

Qty	Part	Footprint	Refs
1	RP2040-ZERO rp2040-zero	rp2040-zero-smd	U1
1	AO3400A	SOT-23	Q1
1	OLED-128X64 OLED-128x64	OLED-128x64	J1
1	M93C66-WMN6P	SO-8_STM	CR1
4	WS2812_SWITCH WS2812_Switch	Kailh_socket_MX_WS2812B_RL	D1, D2, D3, D4
4	WS2812_SWITCH WS2812_Switch	Kailh_socket_MX_WS2812B_LR	D5, D6, D7, D8
8	4µ7	C_0805_2012Metric_Pad1.18x1.45mm_HandSolder	C1, C2, C3, C4, C5, C6, C7, C8
2	10K 10k	LED_0805_2012Metric_Pad1.15x1.40mm_HandSolder	R1, R2

Hellboard design files

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

Hellboard: common questions

What microcontroller does the Hellboard use?

The Hellboard is built around the RP2040-ZERO, from the RP2040/RP2350 family.

How big is the Hellboard PCB?

The Hellboard measures 116.6 × 40 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Hellboard?

22 components, from 8 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 Hellboard design files?

From the frfrh/Hellboard 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 Hellboard design in my own project?

Yes, under the terms of its GPL-2.0 license, which frfrh chose for the repository.

Can I test firmware for the Hellboard 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.