2 layers68.6 × 53.3 mm
Arduino Shield Intro
Hemo-Dyn/EXG-Bridge
Development for an ECG device capable of connecting to smartphones and display heart rate information
34 partsMIT
2 layers59.2 × 66.5 mm
Basic PCB
Hemo-Dyn/EXG-BridgeDevelopment for an ECG device capable of connecting to smartphones and display heart rate information
- Size
- 59.2 × 66.5 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 28
- Nets
- 20
- Pads
- 71
- Tracks, vias
- 108, 26
- Pours
- 4
- Routed
- Yes
- KiCad
- KiCad 8.0 (file 20240108)
- Created
- 31 May 2025
- Updated
- 3 Oct 2026
Overview
Basic PCB is an open-source printed circuit board by Hemo-Dyn, from the Hemo-Dyn/EXG-Bridge repository on GitHub, published under the MIT licence. It is a 2-layer board of 59.2 × 66.5 mm with 28 parts on 20 nets, routed with 108 tracks and 26 vias.
It is built around the LM358. Its parts include 13 resistors, 5 capacitors and 3 ICs.
Main components
1README
README.mdEXG-Bridge
Ongoing development for ECG and EMG hardware interfacing with iPhones to present heartrate and muscular data
Parts
28| Qty | Value | Footprint | References |
|---|---|---|---|
| 3 | LM358 | LM358:DIL08 | U1, U2, U3 |
| 2 | 10k | Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P5.08mm_Horizontal | R1, R2 |
| 2 | 1M | Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P5.08mm_Horizontal | R7, R8 |
| 2 | 3.4k | Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P5.08mm_Horizontal | R11, R12 |
| 2 | 470pF | Capacitor_THT:CP_Radial_D7.5mm_P2.50mm | C1, C2 |
| 2 | Battery | Connector_PinSocket_2.54mm:PinSocket_1x02_P2.54mm_Vertical | -9V, +9V |
| 1 | 10k | Potentiometer_THT:Potentiometer_Bourns_3006P_Horizontal | R4 |
| 1 | 15k | Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P5.08mm_Horizontal | R6 |
| 1 | 1uF | Capacitor_THT:CP_Radial_D7.5mm_P2.50mm | C3 |
| 1 | 2.2uF | Capacitor_THT:CP_Radial_D7.5mm_P2.50mm | C4 |
| 1 | 320 | Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P5.08mm_Horizontal | R10 |
| 1 | 39k | Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P5.08mm_Horizontal | R3 |
| 1 | 4.7nF | Capacitor_THT:CP_Radial_D7.5mm_P2.50mm | C5 |
| 1 | 470k | Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P5.08mm_Horizontal | R9 |
| 1 | 47k | Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P5.08mm_Horizontal | R5 |
| 1 | 56k | Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P5.08mm_Horizontal | R13 |
| 1 | Conn_01x02 | Connector_PinSocket_2.54mm:PinSocket_1x02_P2.54mm_Vertical | 5V |
| 1 | ELBOW | TestPoint:TestPoint_Keystone_5000-5004_Miniature | GND |
| 1 | In1 | TestPoint:TestPoint_Keystone_5000-5004_Miniature | In-1 |
| 1 | In2 | TestPoint:TestPoint_Keystone_5000-5004_Miniature | In-2 |
| 1 | output | TestPoint:TestPoint_Keystone_5000-5004_Miniature | Out |
Questions
How big is the Basic PCB PCB?
It measures 59.2 × 66.5 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Basic PCB use?
28 parts, built around the LM358. 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 Basic PCB KiCad files?
From the Hemo-Dyn/EXG-Bridge repository on GitHub, at the commit this page was made from: the board is Phases/Phase-0/Basic-PCB/Basic-PCB.kicad_pcb and its schematic Phases/Phase-0/Basic-PCB/Basic-PCB.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Basic PCB 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).
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