HardLabs

MyoBand Main

SonDinh23·EMGBand-HandBionic·hardware/myoband_main/myoband_main.kicad_pcb

MyoBand Main PCB layout, top view — open source RP2040/RP2350 board by SonDinh23
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About the MyoBand Main PCB

MyoBand Main is an open source RP2040/RP2350 PCB design by SonDinh23, published on GitHub under the GPL-3.0 license. It is a 4-layer board measuring 25 × 39 mm, with 92 components from 32 distinct parts.

Its main chip is the ESP32-PICO-V3-02, from the RP2040/RP2350 family. Other key parts include the CP2102N-Axx-xQFN28, LSM6DSL, MCP3208, XC6220B331MR and TP4056. By type, the board carries 43 capacitors, 27 resistors, 13 ICs, 3 transistors, 1 connector and 1 antenna.

It belongs with the iot & wireless, wearables and robotics & motion designs in this gallery.

From the project

Full-stack 6-ch dry-electrode sEMG wearable (ESP32/BLE, 1 kHz/ch, JSON presets) with DC removal + HPF/LPF + Kalman DSP and dual-path gesture control (Amplitude thresholds + 6-ch Radar-shape matching) + Flutter app; SNR>=8 dB, latency<=80-100 ms, >=85% online (4 grips)

The definitive pit stop for every PCB in the EMGBand/Hand Bionic stack. Each section tells you what the board does, how it talks to the rest, where to grab build assets, and what to check before you power it up—plus a gallery pulled straight from the committed files.

- Use forward slashes / in image paths; links are relative to this README. - Example: ``. - GitHub renders images once the PNG files are present; add new renders/photos in the matching board folder. - Prefer per-board READMEs or a PDF gallery? Say the word and we will scaffold it.

MyoBand Main, from the project README
From the project README

Main components on the MyoBand Main

ESP32-PICO-V3-02CP2102N-Axx-xQFN28LSM6DSLMCP3208XC6220B331MRTP4056Pad 5TPS60402DBV

MyoBand Main bill of materials (BOM)

92 components, 32 distinct parts.

QtyPartRefs
1
ESP32-PICO-V3-02
U1
1
CP2102N-Axx-xQFN28
U2
1
LSM6DSL
U3
1
MCP3208
U4
2
XC6220B331MR
U5, U15
1
TP4056
U6
5
Pad 5
U7, U8, U9, U11, U12
1
TPS60402DBV
U16
2
SS8050
Q1, Q2
1
MMBT2222A
Q3
1
USB_C_Receptacle_USB2.0_16P
J1
1
RFECA3216060A1T
AE1
1
Buzzer
BZ1
1
INMP441ACEZ-R7
MK1
1
TL3342F160QG
S1
1
WS2812B2020
D2
9
1uF
C1, C22, C24, C26, C28, C29, C31, C33 +1
13
4.7uF
C2, C4, C6, C8, C10, C12, C14, C16 +5
14
100nF
C3, C5, C7, C9, C11, C13, C15, C17 +6
1
10nF
C20
Show 12 more
QtyPartRefs
6
22uF
C21, C23, C25, C27, C30, C32
4
0R
R1, R3, R6, R16
10
10K
R2, R10, R11, R12, R13, R14, R15, R22 +2
2
5.1K
R4, R5
1
4.7K
R7
1
24K
R8
1
47K
R9
1
1K2
R17
3
200K
R18, R19, R20
1
300K
R21
1
100K
R25
2
1K
R28, R29

MyoBand Main design files

The KiCad project lives in the SonDinh23/EMGBand-HandBionic repository on GitHub; these links point at the commit this page was built from.

MyoBand Main: common questions

What microcontroller does the MyoBand Main use?

The MyoBand Main is built around the ESP32-PICO-V3-02, from the RP2040/RP2350 family.

How big is the MyoBand Main PCB?

The MyoBand Main measures 25 × 39 mm, has 4 copper layers and is 1.6 mm thick.

How many components are on the MyoBand Main?

92 components, from 32 distinct parts. The full bill of materials is listed on this page.

Where can I download the MyoBand Main design files?

From the SonDinh23/EMGBand-HandBionic repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the MyoBand Main design in my own project?

Yes, under the terms of its GPL-3.0 license, which SonDinh23 chose for the repository.

Can I test firmware for the MyoBand Main 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.

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