Protocentral Sensything Ox is the next-generation upgrade to the Protocentral OpenOx wireless pulse oximetry development board. Built on the advanced ESP32-S3 microcontroller and the high-precision AFE4400 analog front-end, this board delivers real-time SpO2, heart rate, and PPG waveform monitoring with significantly improved speed, memory, and wireless performance.
The ESP32-S3 features a dual-core 32-bit LX7 CPU (up to 240 MHz), 512KB SRAM, and support for up to 8MB PSRAM, offering powerful edge processing and low-latency data handling. It also brings Wi-Fi 4, Bluetooth 5 (LE). With rich 45 programmable GPIOs options, it’s a flexible platform for a variety of health and IoT applications.
Sensything Ox enhances usability with an onboard microSD card slot for local data logging, making it ideal for long-term, offline monitoring. It comes bundled with a Nellcor-compatible fingertip SpO2 probe for comfortable, non-invasive measurement.
Pulse oximetry is performed by detecting red and infrared light absorption in the blood using a finger clip sensor, enabling accurate and continuous monitoring. With upgraded hardware and software capabilities, Sensything Ox is perfectly suited for wearable health devices, remote diagnostics, and biomedical research.
For more information on how exactly Pulse Oximetry works, check out this great article here
Since the amount of blood flowing through any blood vessel varies (pulses) with the rate of blood from the heart, this can also be used for measuring heart rate without the need for connecting any ECG electrodes.
Features
- Espressif ESP32-S3 with
- Dual-core Xtensa® 32-bit LX7 CPU (up to 240 MHz)
- Wireless interface: Bluetooth Low Energy (BLE) and WiFi
- 8 MB Flash and 2 MB PSRAM
- Firmware is written using the Arduino IDE
- Texas Instruments AFE4400 Single chip pulse pulse-oximetry front-end IC
- Standard Nellcor compatible DB9 connector for probe
- Calculates Spo2 values with provided code
- Real-time display of PPG (Photoplethysmogram)
- Data transmission over USB and/or BLE
- On-board microSD card slot with SDIO interface for high data rates
- On-board battery charging and regulation. (Just connect a battery to make it standalone, battery NOT included, but any standard 3.7v Li-Ion should work)
- Compatible with the ProtoCentral OpenView visualization program.
- Board Dimensions: 73 x 34 mm
Important Notice: This device is NOT intended to be used in/as medical diagnostic equipment. This device is intended to be used solely for development, evaluation and research purposes only.
Includes
- ProtoCentral Sensything Ox Wireless Pulse Sensor
- Set of stackable Arduino headers
- “Nellcor compatible” Pulse oximetry finger probe
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