Explore Raspberry Pi pinouts with this free Raspberry Pi Pinout Reference. Identify GPIO pins, power pins, UART, SPI, I2C, PWM, ADC compatibility, and connector layouts for Raspberry Pi boards.
Configuring Serial Console on RPi
Target pins 8 (TXD0) and 10 (RXD0) on the 40-pin header using a 3.3V USB-to-UART converter for serial terminal debug consoles safely.
Adding I2C Bus Pull-Ups
Pins 3 (SDA1) and 5 (SCL1) on standard RPi headers include on-board 1.8k-ohm physical pull-up resistors to the 3.3V rail.
Controlling PWM Channels
Drive motors or adjust LED brightness by mapping output lines to hardware-backed PWM0 (pin 32) or PWM1 (pin 33) channels.
Compute Module Boot Config
On Compute Modules, connect the USB boot enable line to GND to allow the flash memory to be mounted over USB.
Raspberry Pi platforms utilize Broadcom BCM series SoC architectures. Because these modern silicon chips feature sub-micron processes, they rely on clean, stabilized 3.3V CMOS logic signaling. Applying direct 5V input lines to these delicate ports will compromise internal chip junctions and lead to complete processor failure.
This reference index consolidates pin configurations, expansion header maps, and line assignments for the Raspberry Pi family.
Finding accurate pinout layouts is crucial for embedded designers, system architects, IoT engineers, and DIY hobbyists. This directory documents active signal paths to help prevent wiring errors, serial protocol failures, and board damage.
Always verify pinout configurations with a digital multimeter before powering up custom circuits or shield adapters.
No, the logic pins operate strictly at a 3.3V threshold. Exposing any GPIO, SPI, or UART pins to a 5V logic source without a level shifter can cause immediate hardware failure.
By default, Raspberry Pi boards configure their main UART debug terminal (TXD0 / RXD0) to a baud rate of 115200.
Yes, you can apply regulated 5.0V directly to pins 2 or 4 on the header. However, this bypasses the on-board input protection fuse, so ensure your power source is regulated and stable.
High-density boards may share physical SoC traces between certain GPIO pin groups and the CSI camera connector, disabling these pins when the camera is active.
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