ECG 2 Click Board™

Track the patterns of your beating heart with the ECG 2 Click Board™. The ECG 2 Click Board™ 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 ECG 2 Click Board™ 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.

Note: We offer cables for three electrodes measuring (using 3.5mm jack onboard)

Setup Guide – How To Use The ECG 2 Click Board™

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

• 1.ECG 2 Click Board™
• 2.Cable
• 3.Disposable adhesive electrode pads (sold in packs of 30)

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 APPLICATION

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.

See the learn.mikroe.com article for more information.

POWER SUPPLY

The ECG 2 Click Board™ 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

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

APPLICATION

Measures the electrical activity of a beating heart through electrodes taped to the skin.

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

SPECIFICATIONS

PINOUT DIAGRAM

This table shows how the pinout of the ECG 2 Click Board™ corresponds to the pinout on the mikroBUS™ socket (the latter shown in the two middle columns).

Notes	Pin					Pin	Notes
Test Pace Out	PAC	1	AN	PWM	16	PWD	Power Down
System reset	RESET	2	RST	INT	15	DRD	Data Ready
SPI chip select	CS	3	CS	RX	14	NC
SPI clock	SCLK	4	SCK	TX	13	NC
SPI data out	DOUT	5	MISO	SCL	12	NC
SPI data in	DIN	6	MOSI	SDA	11	NC
Power supply	+3.3V	7	3.3V	5V	10	+5V	Power supply
Ground	GND	8	GND	GND	9	GND	Ground