Track the patterns of your beating heart with ECG 2 Click. ECG 2 Click contains ADS1194 16-bit delta-sigma analog-to-digital converters from Texas Instruments, a built-in programmable gain amplifier (PGA), an internal reference, and an onboard oscillator.

The Click communicates with the target MCU over SPI and the following mikroBUS pins: PWM, AN and INT. ECG 2 Click runs on 3.3V and 5V power supply.

You will need the following things to start recording your ECG:

• ECG 2 Click
• Cable
• Disposable adhesive electrode pads

Of course, you will also need a target board with an MCU (preferably powered from an external battery).

There are two available measuring options:

1. For 3 wire measurement, a 3.5mm jack is used.

You can connect the Click to a person using three electrodes placed on the left arm, right arm and the left side of the abdomen (below the heart) or alternatively on the left leg.

We offer cables and electrodes that are marked (left leg (LL) – red, left arm (LA) – black, right arm (RA) – white).

2. For 4 wire measurement, screw terminals are used.

ECG 2 Click can also be connected by 4 electrodes that are placed on both arms and legs.

MikroPlot is a free data visualization tool (Windows) that can be used to generate an ECG.

The graph is generated from data sent from the MCU (ADC values from ECG Click input + time stamp). A UART-USB connection is required.

ECG 2 Click uses both 3.3V and 5V power supply — 3.3V is used as digital power supply and 5V is used for analog power supply (via linear regulator which gives stabilized 3V at output).

OverVoltage and OverCurrent protection is realized over 22k resistors and diodes.

NOTE: ECG 2 Click is a prototyping tool, not a medical-grade device. Do not use it to diagnose patients.

• Interface: GPIO, SPI
• Compatibility: mikroBUS™
• Dimensions: 57.15 x 25.4mm
• Input Voltage: 3.3V, 5V

• Schematic
• ADS1194 IC Datasheet
• Learn Article
• Libstock