Recent Projects

The transparent Plexiglass base was laser cut.

Testing Function generator. Sine wave output.                                                                                             Bottom of main board view

The case was from an old electronics kit from the 1970's. The system runs on a laptop adapter and contains 5 buck and boost regulators.

They supply -+ 15 volts for testing OP Amp circuits, +12 Volt, +5 volts for the computers and displays, and overload protected +5 Volts and +3.3 Volts.

I had to add an expansion board (above, bottom left) because some of the 5 volt  chips were not 3.3 volt input tolerant.

Touch Screen Arduino LCD board shield adapter (Left) and MEGA 2560 (Right). Also showing the level shifting components 74LS08 and resistors (Left) 

Main CPU Board showing voltage shifting mods (Left)  and Raspberry Pico

Main Power Supply and output board showing the 12 Volt Regulator (Top Left) , the -+15 Volt booster (Top Center), 

the two 5 Volt regulators and the 3.3 Volt regulator (Top Right) The board was still missing the BNC driver transistor)

Creating touch screen buttons for the Arduino and showing serial data flow on the CPU board. 500 ns makes the data pulse width 100 ns (10 MHz bitrate)