Grooveboard mx atmel au
ianklug·grooveboard·grooveboard-mx-atmel-au/grooveboard-mx-atmel-au.kicad_pcb
About the Grooveboard mx atmel au PCB
Grooveboard mx atmel au is an open source AVR/Arduino PCB design by ianklug, published on GitHub under the CC-BY-SA-4.0 license. It is a 2-layer board measuring 118.1 × 22.9 mm, with 24 components from 15 distinct parts.
Its main chip is the C44854, from the AVR/Arduino family. By type, the board carries 8 capacitors, 7 resistors, 1 IC, 1 crystal, 1 connector and 1 fuse.
It belongs with the keyboards designs in this gallery.
From the project
A four-key mechanical keyboard for rhythm games.
Special thanks to Sebastiaan Swinkels for technical assistance.
Please clone this repository using the --recurse-submodules flag. Some of the required symbol and footprint libraries will not be included otherwise.
Please note that the RP2040 models are functional at a hardware level, but software is incomplete.
The 2.x versions (grooveboard-rp) use the RP2040 MCU, and require different firmware from the 1.x versions. They also include a few new features and refinements over the 1.x models, including M2 mounting holes and improved key spacing.

Main components on the Grooveboard mx atmel au
Grooveboard mx atmel au bill of materials (BOM)
24 components, 15 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | C44854 ATmega32U4-AU | TQFP-44_10x10mm_P0.8mm | U1 |
| 1 | C13738 16MHz | Crystal_SMD_3225-4pin_3.2x2.5mm | X1 |
| 1 | USB_C_Receptacle_USB2.0 | USB_C_GCT_USB4085 | J1 |
| 1 | C261942 500mA | Fuse_0805 | F1 |
| 4 | MX-NoLED | Kailh_socket_MX | MX1, MX2, MX3, MX4 |
| 1 | C318884 SW_Push | TS-1187A-B-A-B | SW1 |
| 1 | C1538 4.7nF | C_0402 | C1 |
| 1 | C52923 1uF | C_0402 | C2 |
| 3 | C1525 0.1uF | C_0402 | C3, C4, C5 |
| 1 | C15525 10uF | C_0402 | C6 |
| 2 | C1555 22pF | C_0402 | C7, C8 |
| 1 | C26083 1M | R_0402 | R1 |
| 2 | C25905 5.1k | R_0402 | R2, R3 |
| 2 | C25092 22 | R_0402 | R4, R5 |
| 2 | C25744 10k | R_0402 | R6, R7 |
Grooveboard mx atmel au design files
The KiCad project lives in the ianklug/grooveboard repository on GitHub; these links point at the commit this page was built from.
Grooveboard mx atmel au: common questions
What microcontroller does the Grooveboard mx atmel au use?
The Grooveboard mx atmel au is built around the C44854, from the AVR/Arduino family.
How big is the Grooveboard mx atmel au PCB?
The Grooveboard mx atmel au measures 118.1 × 22.9 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Grooveboard mx atmel au?
24 components, from 15 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 Grooveboard mx atmel au design files?
From the ianklug/grooveboard repository on GitHub, which has the KiCad layout and the BOM; the links under Design files point to each one.
Can I use the Grooveboard mx atmel au design in my own project?
Yes, under the terms of its CC-BY-SA-4.0 license, which ianklug chose for the repository.
Can I test firmware for the Grooveboard mx atmel au without the hardware?
Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug AVR/Arduino firmware against it before you order a PCB.
More boards in grooveboard
RP2040/RP2350
Grooveboard mx rp
ianklug
120 × 25 mm37 parts2LCC-BY-SA-4.058RP2040/RP2350
Grooveboard rp
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120 × 25 mm37 parts2LCC-BY-SA-4.058RP2040/RP2350
Grooveboard choc rp
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120 × 25 mm37 parts2LCC-BY-SA-4.058AVR/Arduino
Grooveboard atmel mu
ianklug
118.1 × 22.9 mm24 parts2LCC-BY-SA-4.058AVR/Arduino
Grooveboard atmel au
ianklug
118.1 × 22.9 mm24 parts2LCC-BY-SA-4.058AVR/Arduino
Grooveboard choc atmel au
ianklug
118.1 × 22.9 mm24 parts2LCC-BY-SA-4.058AVR/Arduino
Grooveboard choc atmel mu
ianklug
118.1 × 22.9 mm24 parts2LCC-BY-SA-4.058AVR/Arduino
Grooveboard mx atmel mu
ianklug
118.1 × 22.9 mm24 parts2LCC-BY-SA-4.058
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