Boards in 6 GitHub repositories, designed in KiCad, that use the BC857B by Slkor (1 PNP 100MHz 100mA 100nA 200mW 220 45V 500mV 5V PNP SOT-23 Bipolar (BJT) ROHS). See how each wires it, with its parts, size, README and files; the BC857B’s symbol, footprint and pinout are on its own page.
PE1RGU/hf-antenna-switch
Remote HF antenna switch: 3 radios x 4 antennas (path to 8), outdoor relay unit with a hardware safety chain, controlled over Cat6 from a shack interface. KiCad 10, open hardware, designed together with an AI.
OpenRemise/Sniffer
The Sniffer is a small add-on board that turns a Raspberry Pi Pico into a DCC (and BiDi) logic analyzer.
PE1RGU/hf-antenna-switch
Remote HF antenna switch: 3 radios x 4 antennas (path to 8), outdoor relay unit with a hardware safety chain, controlled over Cat6 from a shack interface. KiCad 10, open hardware, designed together with an AI.
nikolajevs/PCB_EU
Сохраняются функции PCBV1: два LED-канала с общей яркостью, два независимых PWM/тахоканала вентиляторов, PTC, помпа, SHT4x, поплавок, RTC с CR2032, microSD, Wi-Fi и существующие функции интерфейса/расписаний.