Espruino MDBT42Q Breakout

SKU 2698
6 in stock.

This board has the same Bluetooth LE module that we use on Puck.js and Pixl.js, pre-programmed with Espruino. Just apply power, connect with Bluetooth LE or Serial and start writing JavaScript!

We sell many BLE boards but this one has 0.1" pins, a voltage regulator, 2 LEDs and a button. It's thin, small, and very power efficient.

  • Bluetooth Low Energy
  • Espruino JavaScript interpreter pre-installed
  • nRF52832 SoC - 64MHz ARM Cortex M4, 64kB RAM, 512kB Flash
  • 22 GPIO (capable of PWM, SPI, I2C, UART) on 0.1" pitch, including 7 analog inputs
  • Built in thermometer
  • NFC tag programmable from JavaScript (when antenna added)
  • 2.5v  - 16v input voltage range, drawing ~20uA while advertising.
  • Powerful (250mA, 500mA peak) MCP1703T 3.3v voltage regulator, capable of powering an ESP8266
  • Dimensions: 18mm x 28mm x 4mm thick

Customer Reviews

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Marco Christoforou

The jury's out for me on this - follow-up

Well I'd said I'd amend my review if things changed. I eventually figured out that I was doing something silly and got this board to work with a BN019 NFC reader. This was after getting it working with an Arduino. This allowed me to compare the two, hardware and development environments. Having now done this I can up rate the Espruino; it is as good as I hoped it would be. Easy to program, nice IDE.

Marco C.
United Kingdom

The jury's out for me on tihis

It seemed unusual to be able to use JavaScript but since I new and thought it would save me compiling C and uploading C I thought I would give this a go. It certainly made it quick to get started. However, I think JavaScript is too slow for my application so I'm struggling to get it to work for me. Then when I tried the online C compiler service it seems to think I have an unofficial board, which is strange. By the way, if you are not used to JavaScript you may find the language a little odd as it's all based on callbacks. If the situation improves I'll update my review.