HardLabs

Mallet Cen

ayuusweetfish·Malletwand·mallet_central/hw/Mallet_Cen.kicad_pcb

Mallet Cen PCB layout, top view — open source STM32 board by ayuusweetfish
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About the Mallet Cen PCB

Mallet Cen is an open source STM32 PCB design by ayuusweetfish, published on GitHub under the CERN-OHL-S-2.0 license. It is a 2-layer board measuring 49.1 × 22.8 mm, with 23 components from 19 distinct parts.

Its main chip is the STM32G030F6Px, from the STM32 family. Other key parts include the MT2492 and LTC4311CSC6#TRPBF. By type, the board carries 8 capacitors, 6 resistors, 4 connectors, 3 ICs, 1 diode and 1 inductor.

It belongs with the iot & wireless designs in this gallery.

From the project

A pendulum as a hands-on musical interface for all · NIME 2024 Short Paper

Malletwand is a handheld controller device in the form of a pendulum (a handle with a swinging bob), which can act as an input interface to the timing of musical playback.

We present this at NIME 2024 as a short paper (PDF; video to-be-updated) in paper session 10, on Friday, 6 Sep.

The following directories contain all the files for design and implementation (hardware, firmware, and mechanical). - wand/: the handheld controller (the "Wand"). - Hardware is a single PCB; firmware for the two controllers are in subdirectories fw/ (the main one) and fwbob/ (the small one in the bob/ball)…

Mallet Cen, from the project README
From the project README

Main components on the Mallet Cen

MT2492STM32G030F6PxLTC4311CSC6#TRPBF

Mallet Cen bill of materials (BOM)

23 components, 19 distinct parts.

QtyPartRefs
1
MT2492
U1
1
STM32G030F6Px
U2
1
LTC4311CSC6#TRPBF
U3
1
Barrel_Jack_Switch_Pin3Ring
J1
1
Conn_01x04
J2
1
Conn_02x04_Odd_Even
J3
1
Conn_01x05
J4
1
White
D2
1
4.7u
L1
3
22u
C1, C4, C5
1
22n
C2
1
22p
C3
1
4.7u
C6
2
100n
C7, C8
1
100k
R1
1
22k
R2
1
1.2M
R3
1
6.8k
R4
2
3.3k
R5, R6

Mallet Cen design files

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

Mallet Cen: common questions

What microcontroller does the Mallet Cen use?

The Mallet Cen is built around the STM32G030F6Px, from the STM32 family.

How big is the Mallet Cen PCB?

The Mallet Cen measures 49.1 × 22.8 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Mallet Cen?

23 components, from 19 distinct parts. The full bill of materials is listed on this page.

Where can I download the Mallet Cen design files?

From the ayuusweetfish/Malletwand repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the Mallet Cen design in my own project?

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

Can I test firmware for the Mallet Cen without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug STM32 firmware against it before you order a PCB.

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