I recently purchased the “3.5inch Display Module Touch LCD with Stylus for Raspberry Pi 3B+” At the moment it takes up all of the GPIO Headers on a PI. I was hoping that someone would have the Required Pinout that are used by the Display Module. I was under the impression that it would need about 8 pins in total… I only ask because i need spare GPIO pins for other parts of my project
If you take a look at the photo on the product page, the pins used are labelled.
all eight are used on the larger portion of the connector, and the 3v and 5v pin, the two GND connections at the top are not used.
Some of these ship with a full 2x20 connector, all the pins not shown in this photo will be unused.
Found pinouts here. Table below is copy from web page.
||3.3V power input
||5V power input
||No connection – used for support
||Active low interrupt pin for touch screen
||Register select pin of Display controller
||SPI data input for the LCD display
||SPI data output from the LCD display
||Clock sync pin of SPI communication
||Chip select pin of SPI LCD
||Chip select pin of SPI Touch screen