Monthly Archives: March 2015

$50 electronics test bench

I’ve been having a hard time finding oscilloscopes and adjustable power supplies in the “hobbyist” price range, but I think I have cobbled together a solution.

A few key components:

  • Power supply from old PC
    • Make sure to short the correct pins to trick the power supply into turning on.  This is usually green to black.
    • yellow-black is 12 V
    • red-black is 5 V
    • orange-black is 3.3 V
    • If you want other voltages, well..  time to built a buck-boost circuit!
  • Gabotronics Xprotolab mini oscilloscope
    • 2MHz sampling
    • 8 bits resolution
    • $50 (the best part)

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