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： ESP32 1.54inch OLED Serial UART Bus Servo ST3020 TTL 25KG.CM Magnetic-Encoder High precision and Large torque FT232RNL USB TO TTL Industrial UART Can For Raspberry Pi 5 Terminal Debug Refractive Prism Milk-V ESP32 S3 Development Board 1.85 inch Round LCD Display 360&amp;amp;times;360 QMI8658 Sensor / MIC / SD /MP3 Audio /Battery Port LVGL/HMI For Arduino Raspberry Pi 5 5V5A Power Raspberry Pi 18.5 inch Type C/HDMI/4K Display Screen 3840×2160 Computer PC Phone Xbox/PS4/Switch 7inch LCD 1024×600 Computer PC Monitor Display Secondary Screen TypeC USB CPU RAM Only For Windows Spotpear Install Espressif IDF Plugin Tutorial User Guide JSON Command Meaning Luckfox Pico ST7789 Changeable Photo Raspberry Pi Camera Module 3 Sensor Assembly IMX708 Official Original 11.9MP Camera ADXL356BEZ Industrial USB TO RS232/485 Serial UART Converter FT232RNL Compact Size ESP32 S3 Raspberry Pi 5 AI kit Hailo8 26Tops PCIe to M.2 NVMe HAT Plus For Pi5 ADXL354C Development Board

Raspberry Pi 1.14inch 1.3inch LCD - Pinouts User Guide

USB Logic Analyzer 24MHz 8 Channel 24M/ seconds Logic Analyzer Debugger