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Emg robotic hand

Pai-88·emg-robotic-hand·board/revd/kicad/emg.kicad_pcb

Emg robotic hand PCB layout, top view — open source RP2040/RP2350 board by Pai-88
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About the Emg robotic hand PCB

Emg robotic hand is an open source RP2040/RP2350 PCB design by Pai-88, published on GitHub under the MIT license. It is a 2-layer board measuring 100 × 100 mm, with 36 components from 27 distinct parts.

Its main chip is the Pico / RP2040, from the RP2040/RP2350 family. Other key parts include the AD623AN and MCP6004. By type, the board carries 15 resistors, 9 connectors, 8 capacitors, 2 ICs and 2 diodes.

It belongs with the robotics & motion designs in this gallery.

From the project

Single-channel surface-EMG front end (AD623 + driven-right-leg) on a Raspberry Pi Pico. Board fabricated and telemetry verified on hardware; analog front end and on-body EMG still in bring-up.

A wearable single-channel surface-EMG front end that reads how hard a forearm muscle contracts and drives a robotic gripper proportionally. The whole control loop runs on a Raspberry Pi Pico rather than on a PC: squeeze harder and the grip closes further, relax and it opens.

The rev E board is built and the digital side works on real hardware. The analog front end has not been powered yet, so no EMG has been recorded from skin. What has been checked so far:

Emg robotic hand, from the project README
From the project README

Main components on the Emg robotic hand

AD623ANMCP6004

Emg robotic hand bill of materials (BOM)

36 components, 27 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
AD623AN
U1
1
MCP6004
U2
1
Electrodes
J1
1
Pico / RP2040
J2
1
+9/GND/-9
J4
1
Servo 1
J5
1
Servo 2
J6
1
Servo 3
J7
1
Servo 4
J8
1
Servo 5
J9
1
+5V servo in
J10
2
BAT85
D1, D2
4
100n
C1, C2, C4, C6
1
1u
C3
1
10u
C5
1
47p
C7
1
470u
C8
4
1k
R1, R2, R4, R10
1
8.2k
R3
1
15k
R5
Show 7 more
QtyPartRefs
1
3.6k
R6
2
10k
R7, R8
1
5.1k
R9
2
150k
R11, R12
1
3.9M
R13
1
390k
R14
1
0R
R15

Emg robotic hand design files

The KiCad project lives in the Pai-88/emg-robotic-hand repository on GitHub; these links point at the commit this page was built from.

Emg robotic hand: common questions

What microcontroller does the Emg robotic hand use?

The Emg robotic hand is built around the Pico / RP2040, from the RP2040/RP2350 family.

How big is the Emg robotic hand PCB?

The Emg robotic hand measures 100 × 100 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Emg robotic hand?

36 components, from 27 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 Emg robotic hand design files?

From the Pai-88/emg-robotic-hand repository on GitHub, which has the KiCad layout, the schematic and the BOM; the links under Design files point to each one.

Can I use the Emg robotic hand design in my own project?

Yes, under the terms of its MIT license, which Pai-88 chose for the repository.

Can I test firmware for the Emg robotic hand 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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