9-Key-Macropad-Hat

ix3doug·9-Key-Macropad-Hat

About the 9-Key-Macropad-Hat

9-Key-Macropad-Hat is an open source RP2040/RP2350 PCB design by ix3doug, published on GitHub under the CERN-OHL-P-2.0 license. It is a 2-layer board measuring 57.4 × 57.4 mm, with 20 components from 4 distinct parts.

Its main chip is the XIAO-RP2040-DIP, from the RP2040/RP2350 family. Other key parts include the 74AHCT1G125. By type, the board carries 9 switches, 9 diodes and 2 ICs.

It belongs with the keyboards and dev boards & breakouts designs in this gallery.

From the project

A 9 Key Macropad for use with F13-F22 key functions. Powered by an RP2040 Microcontroller

Main components on the 9-Key-Macropad-Hat

XIAO-RP2040-DIP 74AHCT1G125

9-Key-Macropad-Hat bill of materials (BOM)

20 components, 4 distinct parts.

Qty	Part	Footprint	Refs
1	XIAO-RP2040-DIP	XIAO-RP2040-DIP	U1
1	74AHCT1G125	SOT95P280X145-5N	U2
9	SW_Push	SW_Cherry_MX_1.00u_Plate	SW1, SW2, SW3, SW4, SW5, SW6, SW7, SW8 +1
9	SK6812MINI	LED_SK6812MINI_PLCC4_3.5x3.5mm_P1.75mm	D1, D2, D3, D4, D5, D6, D7, D8 +1

9-Key-Macropad-Hat design files

The KiCad project lives in the ix3doug/9-Key-Macropad-Hat repository on GitHub; these links point at the commit this page was built from.

Layout9-key-macropad.kicad_pcb
Schematic9-key-macropad.kicad_sch

9-Key-Macropad-Hat: common questions

What microcontroller does the 9-Key-Macropad-Hat use?

The 9-Key-Macropad-Hat is built around the XIAO-RP2040-DIP, from the RP2040/RP2350 family.

How big is the 9-Key-Macropad-Hat?

The 9-Key-Macropad-Hat measures 57.4 × 57.4 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the 9-Key-Macropad-Hat?

20 components, from 4 distinct parts. The full bill of materials is listed on this page.

Where can I download the 9-Key-Macropad-Hat design files?

From the ix3doug/9-Key-Macropad-Hat repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the 9-Key-Macropad-Hat design in my own project?

Yes, under the terms of its CERN-OHL-P-2.0 license, which ix3doug chose for the repository.

Can I test firmware for the 9-Key-Macropad-Hat 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.