Boards in 2 GitHub repositories, designed in KiCad, that use the LM2903DR by UMW (-15V~-1V、1V~15V 0℃~+70℃ 1.3us 1mV 2 25nA 2V~30V 300ns 30V 400uA 5nA SOP-8 Comparators ROHS). See how each wires it, with its parts, size, README and files; the LM2903DR’s symbol, footprint and pinout are on its own page.
xtech/hw-openmower-sabo
OpenMower is an open-source project that upgrades off-the-shelf robotic mowers into modern, smart lawn mowing robots with RTK GPS technology. For more details, check out the OpenMower project.
igorilla666/water-controller
Scheda di controllo basata sul modulo Waveshare ESP32-S3-ETH, con ingressi sensore, RS-485, pilotaggio rele, buzzer e alimentazione/protezioni dedicate.