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4 layersEMG8 Wireless, the printed circuit board in 3D

Eight-channel EMG PCB research design for assistive human-computer interaction. PCB sources only; hardware and user validation pending.

Copper layers
4
Thickness
1 mm
Parts
159
Nets
119
Pads
461
Tracks, vias
1,292, 195
Pours
5
Routed
Yes
KiCad
KiCad 9.0 (file 20241229)
Created
22 Oct 2026
Updated
22 Oct 2026

Overview

EMG8 Wireless is an open-source printed circuit board by im-deltax, from the im-deltax/EMG-Human-Machine-Interface repository on GitHub. It is a 4-layer board with 159 parts on 119 nets, routed with 1,292 tracks and 195 vias.

It is built around the ADS1299IPAG, TPS7A2050PDBVR and BAV99, with the T491B226K010AT, AO3401A and BSS138BK among its other parts. Its parts include 63 resistors, 51 capacitors, 16 diodes, 11 connectors and 6 ICs. It belongs with the nRF52 and nRF5x boards of this library.

Main components

7

README

README.md

EMG Human–Machine Interface

An eight-channel EMG hardware research project by Trần Minh Triết (im-deltax), intended to explore assistive human–computer interaction for people with disabilities using muscle signals.

PCB-only publication

This repository contains the existing EMG8_Wireless.kicad_pcb, its KiCad project settings, and the project-local footprint library required for editing. Open the PCB with KiCad 9. The schematic, datasets, AI training code, simulations, backups and unrelated files are intentionally not included in this PCB-only publication. PCB filename and geometry are unchanged from the supplied source.

The intended assistive interaction features are development goals, not demonstrated outcomes of this release. Firmware, a working computer-control application and user-study results are not included.

Verification status

The supplied historical DRC_RevB_final.rpt reports 10 warning-level violations, 0 unconnected pads and 0 footprint errors. That report is not a fresh check of this publication, and DRC has not been rerun here. Other historical documents describe different design revisions; their release-ready claims are not adopted by this repository.

No fabrication, electrical bring-up, human-use safety validation or assistive-performance validation is established by this publication. This is a research design, not a certified medical device. The supplied source notes shared USB ground and unverified isolation; do not infer suitability for connecting electrodes to a person from these files.

Licensing and attribution

No new blanket license is assigned to the author's PCB design in this publication. The license selected for Robodeltax does not automatically apply to this separate project. Third-party library notices are retained in THIRD_PARTY.md and LICENSE_KiCad_Libraries.md. These files describe library sources; their inclusion does not imply the full original schematic or every referenced component is included here.

Tiếng Việt

Dự án nghiên cứu thiết bị EMG tám kênh nhằm hỗ trợ người khuyết tật tương tác với máy tính bằng tín hiệu cơ. Bản này chỉ công khai PCB và tài nguyên KiCad cần thiết, không gồm dataset, AI, mô phỏng hoặc firmware. Chưa chạy lại DRC, chưa xác nhận hoạt động trên bo thật hoặc hiệu quả sử dụng hỗ trợ tiếp cận. Giấy phép riêng cho thiết kế PCB chưa được chọn.

Parts

159
QtyValueFootprintReferences
32120kEMG8_FP:R_0805R110, R111, R112, R113, R120, R121, R122, R123, R130, R131, R132, R133, R140, R141, R142, R143 +16
1610p / C0GEMG8_FP:C_0603C110, C111, C120, C121, C130, C131, C140, C141, C150, C151, C160, C161, C170, C171, C180, C181
16BAV99EMG8_FP:SOT23D1, D2, D3, D4, D5, D6, D7, D8, D9, D10, D11, D12, D13, D14, D15, D16
11100kEMG8_FP:R_0603R3, R4, R22, R23, R24, R25, R26, R40, R46, R47, R48
10100nF / 10V X7REMG8_FP:C_0603C11, C13, C15, C17, C21, C24, C43, C44, C45, C46
81uF / 10V X7REMG8_FP:C_0603C10, C12, C14, C16, C22, C23, C25, C42
8220p / C0GEMG8_FP:C_0603C112, C122, C132, C142, C152, C162, C172, C182
710kEMG8_FP:R_0603R2, R6, R21, R30, R31, R32, R33
733EMG8_FP:R_0603R10, R11, R12, R13, R14, R15, R20
210uF / 10V X7REMG8_FP:C_0805C1, C4
21MEMG8_FP:R_0805R41, R42
21MEMG8_FP:R_0603R5, R44
22.2uF / 10V X7REMG8_FP:C_0805C2, C3
2TXU0304PWREMG8_FP:TSSOP14U4, U5
10EMG8_FP:R_0603R43
1100uF / 6.3V tantalumEMG8_FP:C_TANT_BC20
110n / X7REMG8_FP:C_0603C41
11nF / 25V X7REMG8_FP:C_0603C5
122uF / 10V tantalumEMG8_FP:C_TANT_BC26
1470kEMG8_FP:R_0603R45
1470p / C0G 50VEMG8_FP:C_0603C40
1ADS1299IPAGEMG8_FP:TQFP64U1
1AO3401AEMG8_FP:SOT23Q2
1AVDD_5VEMG8_FP:TP_1MMTP5
1BIAS electrodeEMG8_FP:TP_1MMJ20
1BIASOUTEMG8_FP:TP_1MMTP8
1BIAS_ELECTRODEEMG8_FP:TP_1MMTP9
1BOOST_5V4EMG8_FP:TP_1MMTP3
1BSS138BKEMG8_FP:SOT23Q5
1CH1 P / NEMG8_FP:JST_SH2J11
1CH2 P / NEMG8_FP:JST_SH2J12
1CH3 P / NEMG8_FP:JST_SH2J13
1CH4 P / NEMG8_FP:JST_SH2J14
1CH5 P / NEMG8_FP:JST_SH2J15
1CH6 P / NEMG8_FP:JST_SH2J16
1CH7 P / NEMG8_FP:JST_SH2J17
1CH8 P / NEMG8_FP:JST_SH2J18
1DVDD_3V3EMG8_FP:TP_1MMTP2
1LiPo 1S / protectedEMG8_FP:JST_PH2J1
1MAIN / external switchEMG8_FP:HDR2SW1
1MMBT3904EMG8_FP:SOT23Q4
1MT3608 / externalEMG8_FP:JST_SH4J2
1TPS22917DBVREMG8_FP:SOT23_6U6
1TPS7A2050PDBVREMG8_FP:SOT23_5U3
1VBAT_SYSEMG8_FP:TP_1MMTP1
1VCAP1EMG8_FP:TP_1MMTP6
1VREFPEMG8_FP:TP_1MMTP7
1XIAO nRF52840EMG8_FP:XIAO_nRF52840_SMDU2

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Questions

What parts does the EMG8 Wireless use?

159 parts, built around the ADS1299IPAG, TPS7A2050PDBVR, BAV99 and T491B226K010AT. 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 EMG8 Wireless KiCad files?

From the im-deltax/EMG-Human-Machine-Interface repository on GitHub, at the commit this page was made from: the board is EMG8_Wireless.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.

Can I use the EMG8 Wireless design in my own project?

Its repository states no licence, so its author keeps all rights: ask im-deltax before reusing the design.