You can update all Espruino BLE devices wirelessly using Nordic's DFU app, but it can take a lot of time if you're programming lots of devices. This programming jig plugs onto an nRF52832DK board (not included) and allows you to update firmware on Puck.js devices in 15-20 seconds. 


  • Take the PCB out of your device
  • Place the PCB upside-down on the programming Jig (without the battery connected)
  • Either use nrfjprog (fastest) or copy the firmware hex file onto the JLINK drive that appears when you plug the nRF52832DK into your PC.
  • Wait 20 seconds
  • Your Puck.js is programmed!

Note: This is a low volume board, hand-assembled to order. It won't have the level of finish you'd would expect from normal Espruino boards.

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Puck.js Programming Jig

  • Brands Espruino
  • Product Code: PUCKJS_JIG
  • Availability: 2
  • £30.00

  • Ex Tax: £25.00

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Tags: Espruino, Puck.js, programmer, jig