PCB Probes


  • Connect quickly and effectively to PCB traces
  • Be cheap and easy to make
  • Allow in-circuit reprogramming of microcontrollers


  • Tested various designs for probes
    • Decided on clothespin because it pushes down on board
  • Designed PCB tip in KiCad, milled on CNC machine
  • Designed socket to make swapping probe tips easy, and aligner to keep probe centered
    • Socket and aligner 3D printed in PLA
    • Socket, aligner and magnets superglued to clothespin
  • Clothespins magnetically attracted to base, an extra toaster tray
  • PCB secured to base with double-sided tape


Quick change socket for probe tip
Powering circuit with probes