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Technology / ECG Capture Hardware

ECG Capture Hardware

A breadboard prototype that captures 3-lead ECG signals using the ADS1293 analog front-end chip and transmits them wirelessly to the PulseWave app over BLE. This is active PoC hardware — functional, but not yet a finished product.

PulseWave capture hardware prototype on a breadboard: ADS1293 ECG breakout board, BLE microcontroller, and 3-lead electrode cables

Components

ADS1293 ECG front-end

Texas Instruments 3-channel ECG analog front-end. Handles signal conditioning, amplification, and delta-sigma analog-to-digital conversion at high resolution.

BLE microcontroller

Compact dev board responsible for reading data from the ADS1293 and transmitting it wirelessly to the PulseWave app over Bluetooth Low Energy.

Electrode interface

3.5mm audio jacks mounted on the ADS1293 breakout board, connected to standard snap-type ECG leads for a 3-lead configuration.

Signal path

ECG electrodes pick up the electrical signal from the body. The ADS1293 conditions and digitises it through its delta-sigma ADC. The microcontroller reads the digital output and streams it to the app over BLE in real time.

What's next

The breadboard stage validates the signal chain. Next steps are a custom PCB, proper electrode isolation, and power management for wearable form factor.

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