BlueIO832 Mini and the free BlueIOWizard mobile app represent the heart of the I-SYST BlueIO ecosystem. Together, they provide an open-source Bluetooth kit that is perfect for applications in the education sector. With BlueIO832 Mini, you can learn about microcontrollers and other electronic components without needing to write complex firmware, experiment with sensors and other devices without writing any code, and take your idea from proof of concept to product design in record time.

BlueIO832 Mini Demo

BlueIO832 Mini and BlueIOWizard function as a Bluetooth data bridge and data terminal, respectively. This versatile, Internet-of-Thing (IoT) framework allows you to communicate with electronic devices—through an easy, plug-and-play interface—using your smartphone or some other mobile device. Simply connect a sensor to BlueIO, select the sensor on the app, and let them talk. After connecting to the target device through your preferred serial interface, BlueIO832 Mini will stream data on that physical interface to the BlueIO mobile app over Bluetooth® 5.

Built-In, App-Configurable Features

BlueIO832 Mini provides four built-in app-configurable data communication features:

Serial-interface bridge

1. Connect BlueIO832 Mini to the serial interface (UART, I²C, or SPI) of a target device.
2. Pair BlueIO832 Mini with the BlueIO mobile app on your device.
3. Configure the serial interface settings in the BlueIO mobile app.
4. Use the BlueIO mobile app to send and receive data on this interface.

GPIO functions

1. Use the BlueIO mobile app to configure the pins of BlueIO832 Mini as GPIO for sending and receiving signals to and from target devices.
2. Pair BlueIO832 Mini with the BlueIO mobile app on your mobile device.
3. Use the BlueIO mobile app to send and receive signals to and from the GPIO pin(s).

Analog-to-Digital Converter (ADC)

1. Use BlueIO832 Mini to convert up to two analog signals to digital signals.
2. Pair BlueIO832 Mini with the BlueIO mobile app on your mobile device.
3. Use the BlueIO mobile app to monitor the converted digital signals.

NFC tag: BlueIO832 Mini can be used as an NFC tag once a Nordic®-compatible NFC antenna is plugged into the NFC connector.

Developing Your Own Firmware

While you can use BlueIO832 Mini as an embedded IoT kit to develop your own firmware using the Nordic® SDK, we recommend you use our open-source library IOsonata, which is built on top of the Nordic® SDK. IOsonata makes it easier and faster to develop firmware for BlueIO832 Mini and other Nordic® nRF52x SoC-based embedded systems.

Features & Specifications

• Bluetooth® 5 low energy (BLE) mode
• A wide range of supply voltage ranging from 1.8 to 5.5 V [VIN]
• Internal level shifter supporting GPIO voltage matching the supply voltage
• Six pins, configurable through the BlueIOWizard mobile app to be:
  • 1x UART with support for hardware flow control, bit parity, and data rates up to 1 Mbps
  • 1x I²C master with support for 100, 250, and 400 kbps data rates
  • 1x SPI master with support for : 125 kbps, 250 kbps, 500 kbps, 1 Mbps, 2 Mbps, 4 Mbps, and 8 Mbps data rates
  • 6x GPIOs [D0-D5] with configurable parameters, including direction drive strength, enabling and disabling pull-up and pull-down resistors, and pin sensing
• Three configurable ADC channels [ADC0 – ADC2] with support for 8, 10, and 12-bit resolution; one differential mode; and two independent channels
• One RGB LED
• An NFC antenna socket that works with any Nordic®-compatible NFC antenna
• A six-pin JTAG connector on the front side and an ARM® 10-pin CoreSight® JTAG connector on the back side

Comparisons

Support & Documentation

Our open source library allows users to quickly develop custom firmware. Example firmware source code is available for various use cases. Demo App source code provided for Android, iOS, and MacOS. Schematics are available.

• IOsonata open source library
• BlueIO832 schematics
• Apps Demo source code