2 layers60 × 60 mm

HighPower Mechaduino
pointhi/HighPower-Mechaduino
Mechaduino derivative which drives up to 10A, drawn using KiCad
140 parts31
Boards in 3 GitHub repositories, designed in KiCad, that use the LM75BD by NXP Semiconductors (-55℃~+125℃ 10ms 11bit 1uA 2.8V~5.5V I2C ±2℃ SOIC-8 Temperature Sensors ROHS). See how each wires it, with its parts, size, README and files; the LM75BD’s symbol, footprint and pinout are on its own page.

pointhi/HighPower-Mechaduino
Mechaduino derivative which drives up to 10A, drawn using KiCad

hoeken/frothfet
Yarrboard load controller board with current sense, volt sense, fuses, and sender support.

slemanz/chronolog
STM32-based temperature data logger with RTC, NOR flash storage, LCD and Wi-Fi. Hardware and firmware.