Ringer Wire

Open School Bell can use the GPIO pins on a Raspberry Pi connected to a relay to operate ringer wire bell systems. This essentially means that if you have a switch to ring your bells OSB can connect into that and ring the bells for you.

You can find the GPIO Pin Number for the controller using cat /sys/kernel/debug/gpio. If using GPIO17 on a Pi5 the pin number is 588, gpio-588 (GPIO17 )