A LM317 circuit with 6V DC output as intermediary between an unregulated wall wart and my speakers.
Failed repair of a salvaged MikroTik RouterBOARD 750GL.
I repaired a pair of salvaged speakers.
Testing a PAM8403 Class-D amplifier module with a pair of salvaged speaker drivers
Assembling calibration resistors for the ESR Meter.
I have completed a XR2206 function generator kit build.
I have completed my build of Jay_Diddy_B’s 5 Transistor ESR Meter.
Transferring the digital clock circuit to a perfboard and putting it into an enclosure.
Sleep mode and Schmitt trigger on multiplexed analog buttons. Also, now the clock is powered by 18650 Li-ion cell.
Replacing Arduino Nano with regulatorless Arduino Pro Mini.