Raspberry Pi 1.14inch 1.3inch LCD

The mini PiTFT connects to the 'top' 2x12 headers on the Pi's 2x20 header connection. It uses the following pins:

5.0V - Connected to the display backlight
3.3V - Connected to the display power and also the STEMMA QT / Qwiic connector
GND - Ground for everything
SDA & SCL - I2C data for the STEMMA QT / Qwiic connector. Not used by buttons or display
GPIO22 - Used to turn the backlight on and off. If you never want to turn the backlight off, cut the small jumper on the bottom of the PiTFT to free up GPIO22
GPIO23 & GPIO24 - Connected to the two front buttons. These pins have 10K pullups to 3.3V so when the button is pressed, you will read a LOW voltage on these pins
SCK, MOSI, CE0 & GPIO25 - These are the display control pins. Note that MISO is not connected even though it is a SPI pin because you cannot read back from the display.

Not used: GPIO4, GPIO17, GPIO18, GPIO27

If you are using the 240x135 1.14" (small rectangular) Mini PiTFT, you can attach other hardware to the Pi on those pins if you use a stacking header - it will go through the 2x12 connector on the Mini PiTFT. This wont work on the 1.3" because the holes don't go through the PCB

TAG： RS232 to RJ45 Cortex-A7 Aluminum Heatsink MPTPU Raspberry Pi 5 TPU AI Kit 2TOPS PCIe to TPU HAT Pi5 For Google Coral Edge TPU 0.99inch Pi5-Active-Cooler-C UNO Minima RA4M1 ZERO Tiny SuperMini R7FA4M1 Board Compatible With R4 For Arduino RS485 Bus Gripper Serial Robotic Arm Gripper Mechanical claw Serial Bus Servo ST3215/CF35-12 DC-DC Step-Down Mini voltage Moudle Input 5~36V voltage Output 5V/3.3V 4A Spotpear Raspberry Pi Raspberry Pi 5 PCIe to USB3.2 Gen1 Hub 5Gbps For Raspberry Pi OS Drive free NVIDIA Jetson Orin Nano Developer Kit Official Original 8GB AI 40Tops For Embedded and Edge Systems ESP32 S3 Development Board 1.91 inch AMOLED Display Screen For Arduino LVGL With SD-Port/ QMI8658C 6-Axis Sensor Spotpear ESP32 1.54inch OLED RP2350B-MINI-A picotool Tutorial ESP32 S3 LCD Development Board 1.3 inch Display 1.3inch Screen ST7789 240x240 Mini TV SD-Port QST QMI8658 Gyro Sensor LVGL For Arduino Raspberry Pi Camera 8MP IMX415 also For Luckfox-Omni3576 RK3576

Raspberry Pi 1.14inch 1.3inch LCD - Pinouts User Guide

AS7341 Spectral Color Sensor Visible Spectrum Sensor Multi Channels High Precision I2C Bus