2 layers70.1 × 50 mm
2 layers230 × 97.5 mm
this is me trying to make a dry-electrode EMG reader on the forearm because we dont have billions of dollars like Meta lmao it has 5 electrodes that take readings from the following muscles: - flexor carpi ulnaris -…
- Size
- 230 × 97.5 mm
- Copper layers
- 2
- Thickness
- 0.24 mm
- Parts
- 43
- Nets
- 55
- Pads
- 171
- Tracks, vias
- 146, 3
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 10.0 (file 20260206)
- Created
- 17 Jul 2026
- Updated
- 8 Aug 2026
Overview
Emg is an open-source printed circuit board by EpicTromboneKid, from the EpicTromboneKid/emg repository on GitHub. It is a 2-layer board of 230 × 97.5 mm with 43 parts on 55 nets, routed with 146 tracks and 3 vias.
It is built around the INA128U and LM27762DSS. Its parts include 25 resistors, 10 capacitors, 7 ICs and 1 connector. It belongs with the nRF52 and nRF5x boards of this library.
Main components
2
INA128U
SOIC-8-18V~-2.25V、2.25V~18V -40℃~+85℃ 1 10uV 130dB 200nV/℃ 2nA 30pA/℃ 4.5V~36V 4V/us 5nA 6mA 700uA 7us 8nV/√Hz@1kHz External resistor gain、Overvoltage protection Single-Ended SOIC-8 Instrumentation Amplifiers ROHSTexas InstrumentsInstrumentation Amplifiers
LM27762DSS
WSON-12-EP(2x3)-40℃~+85℃ -5V~-1.5V、1.5V~5V 2.5Ω 2.7V~5.5V 250mA 2MHz 390uA Inverted Support WSON-12-EP(2x3) Charge Pumps ROHSTexas InstrumentsCharge Pumps
README
README.mdEMG!
this is me trying to make a dry-electrode EMG reader on the forearm because we dont have billions of dollars like Meta lmao it has 5 electrodes that take readings from the following muscles:
- flexor carpi ulnaris
- brachioradialis
- extensor digitorum
- flexor carpi radialis
- extensor carpi ulnaris
I wanted to try foraying into the field of emg and biosensors, but I don't want to spend money on one-time-use electrodes, so I decided to try my hand at designing a dry electrode one. I wanted something i could control my tv with, acting as a remote, just by using arm muscles (yes ik im lazy) and I thought this was a good idea.
Since it's only one piece, it doesn't really have an assembly per se; once it's printed and soldered, it's entirely self-contained.
Parts
43| Qty | Value | Footprint | References |
|---|---|---|---|
| 10 | 1M | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R2, R3, R5, R6, R9, R10, R11, R12, R17, R18 |
| 7 | 100K | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R4, R8, R15, R16, R20, R22, R24 |
| 6 | 100nF | Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C1, C2, C3, C4, C5, C8 |
| 5 | 390R | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R1, R7, R13, R14, R19 |
| 5 | INA128 | PCM_JLCPCB:SOIC-8_3.9x4.9mm_P1.27mm | U2, U3, U4, U5, U6 |
| 2 | 150K | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R21, R23 |
| 2 | 2.2uF | Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C14, C15 |
| 1 | 10K | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R25 |
| 1 | 1uF | Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C7 |
| 1 | 4.7uF | Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C6 |
| 1 | Conn_01x02_Pin | Connector_PinSocket_2.54mm:PinSocket_1x02_P2.54mm_Horizontal | J7 |
| 1 | LM27762 | Package_SON:WSON-12-1EP_3x2mm_P0.5mm_EP1x2.65_ThermalVias | U8 |
| 1 | Seeeduino Xiao nRF52840 | PCM_marbastlib-xp-promicroish:Xiao_nRF52840_ACH | U1 |
Questions
How big is the Emg PCB?
It measures 230 × 97.5 mm and has 2 copper layers, 0.24 mm thick.
What parts does the Emg use?
43 parts, built around the INA128U and LM27762DSS. 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 Emg KiCad files?
From the EpicTromboneKid/emg repository on GitHub, at the commit this page was made from: the board is emg.kicad_pcb and its schematic emg.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Emg design in my own project?
Its repository states no licence, so its author keeps all rights: ask EpicTromboneKid before reusing the design.
Similar boards
- 2 layers182.9 × 83.8 mm
Schematic3
alberto-battistel/Teensy-EIS
Transform your teensy 3.6 (pjrc.com) into an instrument for electrochemical impedance spectroscopy.
37 parts6GPL-3.0 - 2 layers100 × 70 mm
- 2 layers85 × 55 mm
Final schematics
shreenandansonu/Electronic-Stethescope
EKOBIT is an electronics stethoscope, a AFE signal board for a digital stethoscope.
59 parts3MIT - 2 layers41.9 × 22 mm
Modular Filter 603 kicad
TZeng0698/Portable-EEG-with-Modular-Pre-Filtering-for-BCI-Applications
A Low-cost EEG BCI implementation with modular filtering card and ADS1298. The repo contains the PCB files and a guide to design your own(in progress).
42 parts3 - 2 layers69.5 × 25 mm
B3.1
Neurotechnology-Exploration-Team/Psylink-NXT
This is intended as a human input device (like a keyboard) that predicts your intention from muscle signals. Using a neural network, trained through a process where you press keys at the exact same time that you make…
56 parts2GPL-3.0 - 2 layers90 × 100 mm
Fonte corrente bipolar V01
Pinheirogustavo/PCB_projects
O gerador de sinais é baseado no AD9850. São gerados dois sinais senoidais e dois sinais quadrados, com banda de frequência entre 1 Hz e 40 MHz.
56 parts2 - 4 layers200 × 142.3 mm
FRED Electrical Scheme KiCAD
GiulianoAgostini04/FRED-Project
Real-time concentration monitoring system based on frontal-lobe EEG signals. Features a custom PCB designed with TinkerCAD and KiCad, OpenBCI Ganglion and Arduino UNO for signal acquisition, display, and frequency-band…
93 parts1MIT