Note: Do not connect a device with an input voltage above 3.3V to any of the GPIO pins, or else it will fry the Raspberry Pi.Ī GPIO pin set as an output pin sends the voltage signal as high (3.3V) or low (0V). A voltage between 1.8V and 3.3V will be read by the Raspberry Pi as HIGH and if the voltage is lower than 1.8V will be read as LOW. Raspberry Pi 3 Input/Outputs pins:Ī GPIO pin that is set as an input will allow a signal to be received by the Raspberry Pi that is sent by a device connected to this pin. All the voltages are measured with respect to the GND voltage. GND: Ground is commonly referred to as GND. This pin can use to power up the Raspberry Pi, and it can also use to power up other 5v devices.ģ.3V: The 3v pin is there to offer a stable 3.3v supply to power components and to test LEDs. The board consists of two 5V pins, two 3V3 pins, and 9 ground pins (0V), which are unconfigurable.ĥV: The 5v pins directly deliver the 5v supply coming from the mains adaptor. Raspberry Pi 3B+ GPIO Pinout Raspberry Pi 3 Power Pins:
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