Keyfob HAT Pinout
note
The keyless entry solution described here only works with the AutoPi TMU CM4 and newer editions
The keyless keyfob extension HAT enables two new ports on the AutoPi device. These can be seen here during the install:
After assembly of the device, the ports can be seen from the picture below:
Pinout Conn 1 - RPI#
Connection 1 on the Keyfob HAT is controlled from the AutoPi base board, by the standard AutoPi setup.
The pinout for this connector is:
| Pin No. | Wire Color | Name | Description | Comments |
|---|---|---|---|---|
| 1 | Red | Vcc3v3_switched | Controllable 3.3V power supply | Controlled by the AutoPi base board MCU |
| 2 | Black | GND | Internal ground | |
| 3 | Yellow | Vcc5v_switched | Controllable 5V power supply | Controlled by the AutoPi base board MCU |
| 4 | Green | RPI_ID_SD | Digital input/output | Controlled by the RPi |
| 5 | Blue | RPI_GPIO24 | Digital input/output | Controlled by the RPi |
| 6 | White | RPI_ID_SC | Digital input/output | Controlled by the RPi |
| 7 | Orange | RPI_GPIO27 | Digital input/output | Controlled by the RPi |
| 8 | Purple | RPI_GPIO23 | Digital input/output | Controlled by the RPi |
Pinout Conn 2 - Local#
Connection 2 on the Keyfob HAT is controlled locally on the keyfob extension board.
The pinout for this connector is:
| Pin No. | Wire Color | Name | Description | Comments |
|---|---|---|---|---|
| 1 | Red | Vcc3v3_switched | Controllable 3.3V power supply | Controlled by the HAT's onboard MCU |
| 2 | Black | GND | Internal ground | |
| 3 | Yellow | Vcc5v_switched | Controllable 5V power supply | Controlled by the HAT's onboard MCU |
| 4 | Green | DIO9 | Digital input/output | Controlled by the HAT's onboard MCU |
| 5 | Blue | DIO10 | Digital input/output | Controlled by the HAT's onboard MCU |
| 6 | White | DIO3 | Digital input/output | Controlled by the HAT's onboard MCU |
| 7 | Orange | DIO2 | Digital input/output | Controlled by the HAT's onboard MCU |
| 8 | Purple | DIO0 | Digital input/output | Controlled by the HAT's onboard MCU |