Aller au contenu principal



The Z_ECG is an electronics development board for 6TRON open source platform built around Analog Devices optimized analog front-end (AFE) AD8232 and Nordic Semiconductor nRF52832 RF SoC.

The electrocardiogram signal is collected through a standard ECG belt connected to the case. The signal is amplified and filtered by the AD8232 before being digitized by the 12-Bit ADC integrated in the microcontroller. An integrated electrode detection circuit permits to alert the user of electrode disconnection.

The nRF52832 SoC is a 32-bit ARM Cortex M4 CPU with up to 512kB Flash and 64kB RAM memory and a 2.4GHz RF transceiver. The SoC is multiprotocol capable and supports Bluetooth Low Energy. The board includes a battery charger with a micro USB-B header, a 300mA Lithium-Polymer rechargeable battery and a fuel gauge for the monitoring of the cell state-of-charge. External RAM is also available to permit the implementation of advanced signal processing algorithms. An accelerometer can provide information on the activity of the person carrying the object.

The Z_ECG board offers 6TRON users an ECG Object able to collect, monitor and transmit the Electrocardiogram signal (ECG) through a BLE Link at regular time intervals with a very low power



Soc Features :

  • ARM 32-bit Cortex-M4 CPU with (FPU)
  • 64 MHz max CPU frequency
  • AES (128 bit key) HW encryption with EasyDMA
  • 512 kB flash
  • 64 kB RAM
  • Serial wire debug (SWD)
  • 13.56MHz NFC TagBluetooth 5.1, 2.4 GHz transceiver**
  • -96 dBm sensitivity in Bluetooth low energy mode
  • UP to 2 Mbps data rate in Bluetooth low energy mode
  • -20 to +4 dBm TX power, configurable in 4 dB step
  • On-chip balun (single-ended RF)
  • RSSI (1 dB resolution)
AD82322-electrode, Heart Rate Monitor Front End
BQ24075Standalone 1-Cell 1.5-A Linear Battery Charger with PowerPath
BMA456Low-power, 3-Axis Digital Output MEMS Accelerometer
User InterfacesLED : Battery charger indicator Switches : user switch
Connectivity10-pin Tag connect RF antenna : Onboard planar antenna
Board sizeBoard alone: 63mm x 45.25mm Casing (TWN5-2-7W) :70 x 50 x 15mm
Power Supply1S liPo batteryMicro-USB

Block Diagram

The graphics below gives an overview of the board features and connections.


Software Support

The Z_ECG provide a demo example developed using Mbed OS.

Environmental impact

The Eco score of the Z_ECG is expressed in points representing the environmental impact of an average European per year.

Eco-score details


Passive electronic component0,034g
Active electronic component0,0085g
Connectors Switchs3,144g
Logique type integrated circuit0,3685g
Memory type integrated circuit0g


Low voltage electricity voltage France
Supply voltage5V
% use75%
Daily eco-score6,72E-04
Yearly eco-score0,25