Pimoroni OnOff SHIM for Raspberry Pi

Pinout

• Micro-USB power input

  Power input to the OnOff SHIM from a micro-USB power supply; the product page says to plug the micro-USB power supply into the micro-B connector, then press the button to switch on power and boot the Pi.

  Type · power
• Raspberry Pi 40-pin GPIO header

  Soldered/stacked connection to compatible 40-pin Raspberry Pi GPIO header; the product page says the SHIM can be soldered straight onto the GPIO pins and is compatible with 40-pin header Raspberry Pi models.

  Type · connector
• BCM17BCM17

  Shutdown-button sense line watched by the Pimoroni clean-shutdown daemon; product page says BCM pin 17 is watched and when pulled low by a button press it initiates clean shutdown.

  Type · signal
• BCM4BCM4

  Power-cut control line used by the Pimoroni daemon; product page says BCM pin 4 is pulled low just before shutdown to completely cut power to the Pi.

  Type · signal