2 layers33.7 × 47 mm
OpenEMG2
CGrassin/OpenEMG
OpenEMG is an open-hardware, easy to make, EMG module to measure muscle activity.
31 parts54MIT
2 layers26 × 32.4 mm
OpenEMG2
CGrassin/OpenEMG54OpenEMG is an open-hardware, easy to make, EMG module to measure muscle activity.
- Size
- 26 × 32.4 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 32
- Nets
- 22
- Pads
- 81
- Tracks, vias
- 115, 18
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 5 (file 20171130)
- Created
- 2 Mar 2023
- Updated
- 2 Mar 2023
Overview
OpenEMG2 is an open-source printed circuit board by CGrassin, from the CGrassin/OpenEMG repository on GitHub, published under the MIT licence. It is a 2-layer board of 26 × 32.4 mm with 32 parts on 22 nets, routed with 115 tracks and 18 vias.
It is built around the LM324, ICL7660M/TR and SS14. Its parts include 15 resistors, 8 capacitors, 4 connectors, 2 ICs and 1 diode.
Main components
3
LM324
SOP-14-1.5V~10V 0℃~+70℃ 24V 250nA 3V~20V 4 40mA 50nA 700uA 7mV 80dB SOP-14 Operational Amplifier ROHSHXY MOSFETOperational Amplifier
ICL7660M/TR
SOP-8-25℃~+60℃ 100Ω 10kHz 175uA 3V~9.5V 98% Inverted SOP-8 Charge Pumps ROHSHGSEMICharge Pumps
SS14
SMA(DO-214AC)-55℃~+150℃ 1A 25A 300uA@40V 40V 550mV@1A Independent SMA(DO-214AC) Schottky Diodes ROHSMDDSchottky Diodes
README
README.mdOpenEMG
Electromyography (EMG) is a commonly used electrodiagnostic medicine technique for evaluating and recording the electrical activity produced by skeletal muscles. OpenEMG is a project that aims to create an open-source, easy-to-make EMG module that can capture muscle information from Arduino or any other micro-controller. With this module, users can measure muscle activity and use the data to explore various applications such as robotics and prosthetics.
View the article about this project (including performance, usage, principle of operation) here: https://charleslabs.fr/en/project-OpenEMG+Arduino+Sensor
Parts
32| Qty | Value | Footprint | References |
|---|---|---|---|
| 5 | 1k | Resistor_SMD:R_0805_2012Metric | R1, R2, R9, R10, R13 |
| 3 | 10u | Capacitor_SMD:CP_Elec_6.3x4.5 | C6, C8, C9 |
| 3 | 18k | Resistor_SMD:R_0805_2012Metric | R7, R11, R15 |
| 3 | 47k | Resistor_SMD:R_0805_2012Metric | R3, R4, R14 |
| 2 | 10k | Resistor_SMD:R_0805_2012Metric | R8, R12 |
| 2 | 15k | Resistor_SMD:R_0805_2012Metric | R5, R6 |
| 2 | 330n | Capacitor_SMD:C_0805_2012Metric | C3, C4 |
| 2 | 470n | Capacitor_SMD:C_0805_2012Metric | C1, C2 |
| 2 | Mounting_hole | MountingHole:MountingHole_2.2mm_M2_DIN965_Pad | J5, J6 |
| 1 | 100k | Potentiometer_SMD:Potentiometer_Bourns_TC33X_Vertical | RV1 |
| 1 | 100n | Capacitor_SMD:C_0805_2012Metric | C5 |
| 1 | Electrodes | Connector_PinHeader_2.54mm:PinHeader_1x03_P2.54mm_Vertical | J1 |
| 1 | ICL7660M/TR | Package_SO:SOP-8_3.76x4.96mm_P1.27mm | U2 |
| 1 | LM324 | Package_SO:SOIC-14_3.9x8.7mm_P1.27mm | U1 |
| 1 | MCU_out | Connector_PinHeader_2.54mm:PinHeader_1x03_P2.54mm_Vertical | J3 |
| 1 | SS14 | Diode_SMD:D_SMA | D1 |
| 1 | logo | logo:logo | LOGO1 |
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Questions
How big is the OpenEMG2 PCB?
It measures 26 × 32.4 mm and has 2 copper layers, 1.6 mm thick.
What parts does the OpenEMG2 use?
32 parts, built around the LM324, ICL7660M/TR and SS14. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
Where can I download the OpenEMG2 KiCad files?
From the CGrassin/OpenEMG repository on GitHub, at the commit this page was made from: the board is OpenEMG_SMD/OpenEMG2.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the OpenEMG2 design in my own project?
Its repository publishes it under the MIT licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).