Mallet
About the Mallet PCB
Mallet 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 19.5 × 27 mm, with 24 components from 18 distinct parts.
Its main chip is the STM32G030F6Px, from the STM32 family. Other key parts include the AS5600L-ASOM and DRV8313PWPR. By type, the board carries 7 capacitors, 7 resistors, 5 connectors, 3 ICs, 1 jumper and 1 diode.
It belongs with the robotics & motion and 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)…
Main components on the Mallet
Mallet bill of materials (BOM)
24 components, 18 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | STM32G030F6Px | TSSOP-20_4.4x6.5mm_P0.65mm | U1 |
| 1 | AS5600L-ASOM | SOIC127P600X175-8N | U2 |
| 1 | DRV8313PWPR | SOP65P640X120-29N | U3 |
| 2 | Conn_01x05 | PinHeader_1x05_P2.00mm_Vertical | J1, J2 |
| 1 | Conn_01x03 | PinHeader_1x03_P2.00mm_Vertical | J3 |
| 1 | Conn_01x04 | PinHeader_1x04_P2.00mm_Vertical | J4 |
| 1 | Conn_01x04 | TestPoints_1x04_P2.0 | J5 |
| 1 | SolderJumper_2_Open | SolderJumper-2_P1.3mm_Open_RoundedPad1.0x1.5mm | JP1 |
| 1 | White | LED_0603_1608Metric | D1 |
| 1 | 4.7u | C_0603_1608Metric | C1 |
| 3 | 100n | C_0603_1608Metric | C2, C3, C6 |
| 1 | 10n | C_0603_1608Metric | C4 |
| 1 | 470n | C_0603_1608Metric | C5 |
| 1 | 10u | CP_Elec_5x3.9 | C7 |
| 1 | 1M | R_0603_1608Metric | R1 |
| 2 | 1.5k | R_0603_1608Metric | R2, R3 |
| 1 | 6.8k | R_0603_1608Metric | R4 |
| 3 | 220 | R_0603_1608Metric | R5, R6, R7 |
Mallet design files
The KiCad project lives in the ayuusweetfish/Malletwand repository on GitHub; these links point at the commit this page was built from.
- Layoutmallet/hw/Mallet.kicad_pcb
- Schematicmallet/hw/Mallet.kicad_sch
Mallet: common questions
What microcontroller does the Mallet use?
The Mallet is built around the STM32G030F6Px, from the STM32 family.
How big is the Mallet PCB?
The Mallet measures 19.5 × 27 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Mallet?
24 components, from 18 distinct parts. The full bill of materials is listed on this page.
Where can I download the Mallet 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 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 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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