4 layers120 × 75 mm

Current Sources Improved
mjmorano/Precision-Current-Source
Once it's uploaded connect the Arduino pins to the 6 pin header on the current source as follows:
95 parts
Boards in 1 GitHub repository, designed in KiCad, that use the FMMT614TA by Diodes Incorporated (-55℃~+150℃@(Tj) 1.5V 1.7V 100V 10uA 14V 15000 1V 500mA 500mW NPN SOT-23 Darlington Transistors ROHS). See how each wires it, with its parts, size, README and files; the FMMT614TA’s symbol, footprint and pinout are on its own page.

mjmorano/Precision-Current-Source
Once it's uploaded connect the Arduino pins to the 6 pin header on the current source as follows: