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2 layersCardecg, the printed circuit board in 3D

MobilECG II is an open source clinical grade Holter ECG. For more information, please visit http://mobilecg.hu.

Copper layers
2
Thickness
1.6 mm
Parts
59
Nets
39
Pads
200
Tracks, vias
769, 126
Pours
4
Routed
Yes
KiCad
KiCad 4
Created
4 Apr 2017
Updated
10 Nov 2021

Overview

Cardecg is an open-source printed circuit board by zidou92, from the zidou92/WinECG repository on GitHub. It is a 2-layer board with 59 parts on 39 nets, routed with 769 tracks and 126 vias.

It is built around the LMV341MG and NX3008PBK(TP). Its parts include 22 resistors, 17 capacitors, 7 ICs, 7 transistors and 3 connectors.

Main components

2

README

README.md

MobilECG II

MobilECG II is an open source clinical grade Holter ECG. For more information, please visit http://mobilecg.hu.

NOTE: this is only a preliminary release. It contains known bugs, but its main structure will remain the same. There is no stable branch yet. Development occours on master. When a stable software is released, it will be split to separate stable and development branches.

Directory structure

text
MobilECG II
├─  CAD - OpenSCAD drawings for the case and other parts
├─  Hardware - the hardware design of MobilECG II
│
├───Software
│    ├─  AndroidApp - Android demo application for resting ECG
│    ├─  Common - Source code used both in firmware and host app
│    └─  Firmware - Firmware running on the microcontroller
|
└───CardECG - Toy, credit card ECG project.

How to get one?

MobilECG is not publicly available yet. In order to sell a medical device, certification is needed. We are working hard to bring MobilECG to the users as soon as possible.

However you can still build one yourself. If you want to build it, feel free to do so. Contact us in case of any problems. There will be soon a technical blog where you will be able to find instructions on bulding one yourself.

Compatibility

The whole project is built using free or open source tools. The hardware is designed in KiCAD (http://kicad-pcb.org), the firmware compiles with ARM GCC (you can find binaries here: https://launchpad.net/gcc-arm-embedded), CAD files are designed with OpenSCAD (http://www.openscad.org) and 3D printed using MatterControl on a Prusa i3. The development occours on Mac OS X and Linux, building was never tested on Microsoft Windows (and we are not interested in making this software build on Windows except the Windows client app that will be written).

How to support us?

If you know a doctor or someone with a heart condition, please let them know about our project. Their subscription will help us find investment.

If you are a business angel or an investor, please contact us.

License

The hardware is released under the Creative Commons Attribution-ShareAlike 4.0 International License. All software componens (except Bluetopia, STM32 peripherial libraries, FreeRTOS, and scmRTOS, which are freely available) are licensed under the GNU Public License v3. If you have any special license requirements, please feel free to contact us.

Parts

59
QtyValueFootprintReferences
1247kResistors_SMD:R_0603R1, R2, R3, R5, R8, R9, R10, R11, R12, R14, R15, R20
81uFCapacitors_SMD:C_0603C3, C6, C10, C11, C12, C13, C17, C18
5100nFCapacitors_SMD:C_0603C2, C5, C8, C15, C16
5NX3008PBKTmod:SOT416Q1, Q2, Q3, Q4, Q7
449Resistors_SMD:R_0603R16, R17, R18, R19
33.9kResistors_SMD:R_0603R13, R21, R22
3TPD1E10B06Capacitors_SMD:C_0402U5, U6, U7
210MResistors_SMD:R_0603R6, R7
2CONN_1mod:ecgpadleft1, right1
2NX3008NBKTmod:SOT416Q5, Q6
1100pFCapacitors_SMD:C_0603C1
12.2uFCapacitors_SMD:C_0603C9
12TAPmod:2TAPCN1
1390kResistors_SMD:R_0603R4
14.7uF 16VCapacitors_SMD:C_0603C14
18.2nF NP0Capacitors_SMD:C_0603C4
1ADuC7061mod:LFCSP_VQ_CP32-2U3
1BATTERYmod:CR2016P2
1DDiodes_SMD:SOD-323D6
1LD6805K/25mod:DFN1010C-4U2
1LMV341TO_SOT_Packages_SMD:SC-70-6U1
1PROGPin_Headers:Pin_Header_Straight_1x07P1
1SSD1306mod:SSD1306U4

Questions

What parts does the Cardecg use?

59 parts, built around the LMV341MG and NX3008PBK(TP). 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 Cardecg KiCad files?

From the zidou92/WinECG repository on GitHub, at the commit this page was made from: the board is CardECG/Hardware/cardecg.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.

Can I use the Cardecg design in my own project?

Its repository states no licence, so its author keeps all rights: ask zidou92 before reusing the design.

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