Open-source biomedical hardware — from sensor to signal. Open boards for physiological sensing (ECG, PPG, SpO₂, respiration, bio-impedance, temperature), the libraries to drive them, and the software to see the data.
🩺 What we build
HealthyPi — open patient-monitoring platforms: the HealthyPi Move wearable, the ultralight screenless variant, and the HAT kits that turn a Raspberry Pi into a full vital-signs monitor. HealthyPi 6 is on Crowd Supply.
Sensor breakouts — Qwiic/STEMMA boards for ECG, PPG + ECG, bio-impedance, respiration, temperature and high-resolution ADCs, with Arduino, Raspberry Pi and MicroPython libraries.
OpenView 3 — our open-source app (Windows · macOS · Linux · iOS · Android) to stream, plot, record and update firmware over USB, BLE or Wi-Fi.
Sensything — a wireless platform for biosignal, capacitive and environmental sensing without building a microcontroller from scratch.
🔓 Open by default
Hardware under CERN-OHL-P v2, firmware & libraries under MIT. Datasheets, board files and getting-started guides live with the code and at protocentral.com/docs.
ESP32-C3 HealthyBridge firmware — bridges a framed-UART host MCU to BLE, Wi-Fi, MQTT and a local web dashboard (ESP-IDF). Reference application: HealthyPi 5 NEXT, where the RP2040 streams biosignal vitals/waveforms over the link.
Protocentral/healthybridge-esp32's past year of commit activity
Arduino library for the ProtoCentral easyECG single-lead ECG breakout: filtered ECG in microvolts and heart rate over I2C / Qwiic, with no external dependencies
Protocentral/protocentral_easyecg_arduino's past year of commit activity
Arduino library for the ProtoCentral easyEMG surface EMG breakout: raw sEMG in microvolts, RMS envelope and muscle activation over I2C / Qwiic, with no external dependencies
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