Zener-Tester / LED-Tester PCB ready

A project log for Hack into an existing Multimeter

Using the impact resistant case of a multimeter for your electronics Demonstrated on the design of a Zener-Tester / LED-Vf-Tester

Max SchnorpfeilMax Schnorpfeil 08/08/2021 at 20:230 Comments

PCB's are ready. 

Placement of pads and buttons is perfect.

Center LED has to be soldered by hand as it is placed top side down, looking through the PCB.

Detected a problem of the MOSFET latch-on circuit, which is triggered by the lower button (solved by bodge wire). -> updated in the EasyEDA project.

Next stop: Programming