Mentaldsp
thvofi·mentaldsp
About the Mentaldsp PCB
Mentaldsp is an open source ESP32 PCB design by thvofi, published on GitHub under the Custom license license. It is a 2-layer board measuring 125 × 35 mm, with 26 components from 12 distinct parts.
Its main chip is the ESP32-S3-SUPERMINI, from the ESP32 family. Other key parts include the TMC2209_N0, TMC2209_N2 and TMC2209_N1. By type, the board carries 13 capacitors, 5 resistors, 4 ICs and 4 connectors.
It belongs with the robotics & motion designs in this gallery.
From the project
- Bill of Materials - Hardware - Software - Acknowledgment
- Bill of Materials - Hardware - Software - Acknowledgment
This project would not exist without the help of these amazing people and projects: - My advisor and good friend Valtteri - Solomon at the Aalto Fablab - Daniel Frenkel and his Trinamic Guide - teemuatlut for making the TMCStepper library - DukeDesigns3D and JHS Pedals for the inspiration from the Toe-N Control

Main components on the Mentaldsp
Mentaldsp bill of materials (BOM)
26 components, 12 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | ESP32-S3-SUPERMINI | ESP32-S3-SuperMini | U6 |
| 1 | TMC2209_N0 | BTT_TMC2209 | U7 |
| 1 | TMC2209_N2 | BTT_TMC2209 | U8 |
| 1 | TMC2209_N1 | BTT_TMC2209 | U9 |
| 1 | Conn_PWRJack_2x5.5mm_CUIDevices_PJ-002AH-SMT-TR | CUIDevices_PJ-002AH-SMT-TR_PWRJack_2x5.5mm | J1 |
| 3 | NEMA Conn | PinHeader_1x04_P2.54mm_Vertical | J5, J7, J8 |
| 8 | 100n | C_1206_3216Metric | C1, C2, C3, C4, C6, C8, C10, C12 |
| 4 | 10u | C_1206_3216Metric | C5, C7, C9, C11 |
| 1 | 220u | CP_Elec_100uF_Panasonic_EEE-FN1E101UL | C13 |
| 1 | 1k | R_1206_3216Metric | R2 |
| 3 | 0 | R_1206_3216Metric | R5, R7, R8 |
| 1 | 10k | R_1206_3216Metric | R6 |
Mentaldsp design files
The KiCad project lives in the thvofi/mentaldsp repository on GitHub; these links point at the commit this page was built from.
- Layoutmentaldsp.kicad_pcb
- Schematicmentaldsp.kicad_sch
Mentaldsp: common questions
What microcontroller does the Mentaldsp use?
The Mentaldsp is built around the ESP32-S3-SUPERMINI, from the ESP32 family.
How big is the Mentaldsp PCB?
The Mentaldsp measures 125 × 35 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Mentaldsp?
26 components, from 12 distinct parts. The full bill of materials is listed on this page.
Where can I download the Mentaldsp design files?
From the thvofi/mentaldsp repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.
Can I use the Mentaldsp design in my own project?
It is published under Custom license, which limits how it may be reused; read the license before building on it.
Can I test firmware for the Mentaldsp without the hardware?
Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug ESP32 firmware against it before you order a PCB.
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