Arduino Nano 33 BLE - Debug Port Pin Fixture

thingiverse

Need to quickly connect to the debug port of the Arduino Nano 33 Sense/BLE? I wanted to replace the arduino bootloader that comes with the Nano 33 Sense with the Adafruit version (https://github.com/adafruit/Adafruit_nRF52_Bootloader/releases) Also, I did not want to permanently solder wires to those 5 tiny pads at the bottom of the board. So what to do? I designed this machin-thingy in Freecad and now you can use it too. 1. 3D-Print this fixture. Takes less than 10mn on my slow MP Select Mini (see gcode) 2. Use 0.5mm drill to carefully make all 9 holes slightly bigger. 3. Push some header pins through. It's going to be a tight fit. 4. Solder some wire to the pins. Make sure not to keep the soldering iron on the pins for to long. you might melt the plastic around the pins and mess up the alignment to the pads 5. Align the fixture to the Nano PCB. Four holes are added to hold the fixture in alignment by using pins TX/RX and VIN/GND of the board. 6. Push fixture down until all the pins are in contact with the pads at the bottom of the PCB. 7. Connect the other end of the wires to your favourite debugger (J-Link or Black Magic Probe) 8. Program and enjoy! :)