ONLY ECG fix
About the ONLY ECG fix PCB
ONLY ECG fix is an open source ESP32 PCB design by tregatti-tech, published on GitHub. It is a 2-layer board measuring 55.9 × 121.3 mm, with 147 components from 41 distinct parts.
Its main chip is the ESP32, from the ESP32 family. Other key parts include the MCP73811, TL082, INA826, FT231X and MCP1700-1802E/TT. By type, the board carries 35 resistors, 30 capacitors, 8 ICs, 7 jumpers, 3 diodes and 2 transistors.
From the project
Open design/code version of ECG device based on esp32
Website https://tregatti.tech Email info@
Main components on the ONLY ECG fix
ONLY ECG fix bill of materials (BOM)
147 components, 41 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | MCP73811 | SM{slash}SOT23_5 | U1 |
| 1 | TL082 | SOG.050{slash}8{slash}WG.244{slash}L.225 | U2 |
| 1 | INA826 | SOG.050{slash}8{slash}WG.244{slash}L.225 | U3 |
| 1 | FT231X | MAX86150 | U4 |
| 1 | MCP1700-1802E/TT | SM{slash}SOT23_123 | U5 |
| 1 | FT231X | SOG.025{slash}20{slash}WG.240{slash}L.340 | U6 |
| 1 | ESP32 | ESP32WROOM | U7 |
| 1 | ACCEL | QUAD.50M{slash}24{slash}WG4.00 | U8 |
| 2 | NPN BCE | SM{slash}SOT23_123 | Q1, Q2 |
| 8 | — | HOLE_3.2_5 | 89, 90, 91, 92, 93, 94, 95, 96 |
| 25 | — | HOLE_NO_COPPER | 97, 98, 99, 100, 101, 102, 103, 104 +17 |
| 1 | TC2117 | SM{slash}SOT223_1234 | JP1 |
| 1 | HEADER 3 | AUX_IN_3_5MM_2 | JP2 |
| 1 | BAT | SIP{slash}TM{slash}L.200{slash}2_REV1 | JP3 |
| 1 | USB | SM{slash}USB_MICRO3 | JP4 |
| 1 | BAT | SIP{slash}TM{slash}L.200{slash}2 | JP5 |
| 1 | HEADER 6 | SIP{slash}TM{slash}L.600{slash}6 | JP6 |
| 1 | SPO CONN T6P6C-PCB-U TE | TELE{slash}TM.310FACE{slash}6X6 | JP7 |
| 1 | SW PUSHBUTTON | AX{slash}.425X.150{slash}.040 | SW1 |
| 26 | — | VIA1 | ~FV1, ~FV2, ~FV3, ~FV4, ~FV5, ~FV6, ~FV7, ~FV8 +18 |
Show 21 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | BAT54C/SOT | SM{slash}SOT23_123 | D1 |
| 2 | LED | SM{slash}R_0805 | D2, D3 |
| 2 | FERITE | SM{slash}R_0805 | L1, L2 |
| 6 | 1U | SM{slash}C_0805 | C1, C2, C5, C8, C10, C12 |
| 6 | 4.7U | SM{slash}C_0805 | C3, C4, C6, C15, C16, C19 |
| 1 | 100P | SM{slash}C_0805 | C7 |
| 4 | 47P | SM{slash}C_0805 | C9, C11, C22, C23 |
| 1 | 1N | SM{slash}C_0805 | C13 |
| 1 | 10U | SM{slash}C_0805 | C14 |
| 7 | 100N | SM{slash}C_0805 | C17, C20, C24, C25, C26, C29, C30 |
| 3 | 10N | SM{slash}C_0805 | C18, C21, C27 |
| 1 | 2.2N | SM{slash}C_0805 | C28 |
| 7 | 1K | SM{slash}R_0805 | R1, R3, R23, R24, R26, R28, R34 |
| 9 | R | SM{slash}R_0805 | R2, R6, R8, R9, R25, R27, R29, R30 +1 |
| 5 | 1M | SM{slash}R_0805 | R4, R5, R10, R11, R12 |
| 5 | 10K | SM{slash}R_0805 | R7, R13, R15, R18, R20 |
| 2 | 20K | SM{slash}R_0805 | R14, R17 |
| 1 | 100K | SM{slash}R_0805 | R16 |
| 1 | 220 | SM{slash}R_0805 | R19 |
| 2 | 2K2 | SM{slash}R_0805 | R21, R22 |
| 3 | 4K7 | SM{slash}R_0805 | R31, R32, R33 |
ONLY ECG fix design files
The KiCad project lives in the tregatti-tech/ESP32ECG repository on GitHub; these links point at the commit this page was built from.
ONLY ECG fix: common questions
What microcontroller does the ONLY ECG fix use?
The ONLY ECG fix is built around the ESP32, from the ESP32 family.
How big is the ONLY ECG fix PCB?
The ONLY ECG fix measures 55.9 × 121.3 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the ONLY ECG fix?
147 components, from 41 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 ONLY ECG fix design files?
From the tregatti-tech/ESP32ECG repository on GitHub, which has the KiCad layout and the BOM; the links under Design files point to each one.
Can I use the ONLY ECG fix design in my own project?
The repository has no license, so all rights stay with tregatti-tech. Use it as a reference, and ask the author before reusing the design.
Can I test firmware for the ONLY ECG fix without the hardware?
Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug ESP32 firmware against it before you order a PCB.
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