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ProtoCentral tinyGSR GSR/EDA digital output sensor board – Qwiic / STEMMA QT

ProtoCentral tinyGSR is a Galvanic Skin Response (GSR) / Electrodermal Activity (EDA) measurement breakout board that allows you to measure and track your physiological responses in real time. GSR measures the changes in electrical conductivity / Electrodermal activity of the skin, providing valuable insights into a person’s emotional state and stress levels. When a person […]

ProtoCentral tinyADC breakout board

The ProtoCentral tinyADC breakout board is a high-precision analog-to-digital converter (ADC) breakout board that can be used to accurately measure and convert analog voltages to digital values. Product Overview tinyADC has a 12-bit resolution and can operate at a sample rate of 3.3 kSPS (thousands of samples per second) through an I2C interface. The board […]

ProtoCentral OpenOx Wireless Pulse Sensor Kit based on AFE4400/ESP32 

ProtoCentral OpenOx is a standalone, wireless pulse oximetry development board that is powered by the ubiquitous ESP32 WROOM32 module and uses the AFE4400 IC to measure oxygen levels in the blood while also providing a PPG waveform, heart rate, and SpO2 values measured with high precision.  This development board is ideal for integration with a […]

7. License Information

This product is open source! All hardware, software and documentation are open source and licensed under the terms of the following licenses: Hardware All hardware is released under Creative Commons Share-alike 4.0 International. You are free to: Share — copy and redistribute the material in any medium or format Adapt — remix, transform, and build upon […]

4. Exploring HealthyPi v4

Remote Monitoring in healthcare HealthyPi v4 gives patients much greater involvement in the management of their own health, while simultaneously providing peace of mind that vital health information(including ECG and heart-rate, heart-rate variability, histogram, Respiration based on the impedance pneumograph, Pulse oximetry (SPo2), Body temperature) is been monitored in real-time and with high accuracy. For […]

3. Connecting Qwiic Sensors

Qwiic for Quick The idea behind Qwiic based connectors in HealthyPi v4 is to bring flexibility in interfacing. It makes prototyping easy, less complex and interfacing with I2C has been put up simple. The On-board qwiic compatible connectors has built-in support for popular qwiic sensors. Simple for interfacing With On-board 2x Qwiic slots makes sensor […]

6. Troubleshooting

As you learn and explore our device, you may encounter some hiccups along the way. We hope to extend our full Technical support and guidance. We have listed out some of the common issues you may come across. Do send in your queries to All your queries will be addressed within 24 hours. Note: […]

2. Getting Started

Meet HealthyPi v4 Reliable health monitoring has traditionally required that we tether ourselves to machines capable of recording our vital signs around the clock. Outside of a clinical setting, however, this is rarely practical. We developed HealthyPi v4 in part to address this challenge. Building upon its predecessor, HealthyPi v4 is a fully open source, […]

5. Frequently asked questions

Question Solution * Which microcontroller is used? -ESP32, in WROOM32 module format, with a Dual-core Xtensa 32-bit CPU, 4 MB of on-board flash. * How can I identify device communication with BLE ? -Once connected through the BLE, the Yellow LED will stop blinking. -When it is disconnected then the Yellow LED starts blinking. * […]

1. Introduction to HealthyPi 4

HealthyPi v4 is a HAT for the Raspberry Pi, as well as a standalone device that can measure human vital signs that are useful in medical diagnosis and treatment. HealthyPi v4 sets a new standard in open source health solutions with mobility, wireless and wearable capabilities. This device presents a snapshot of the user’s medical […]

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