OpenSprinkler Forums Hardware Questions OpenSprinkler Pi (OSPi) Rpi pins not working Reply To: Rpi pins not working



Maybe use a multimeter to check the voltage between 5V and GND first? Note that that 5V is derived from OSPi, so depending on how much current the fan draws, it may exceed the capability of OSPi’s 5V output current. In that case you should additionally plug in a microUSB cable (connected to a USB charger) to RPi. This will provide additional power to the 5V line.