Adafruit Resistive touch screen controller STMPE610

Achieving a sensitive performance with the touchscreen of your display? Resistive touchscreens are incredibly popular as overlays of TFT and LCD. The only issue is that they require a number of analog pins and you need to continuously poll them since the overlays are essentially just large potentiometers. If your microcontroller lacks analog inputs or you simply want a more elegant controller, the STMPE610 is a great solution to this problem.

This breakout board is equipped with the STMPE610, which features both I2C and SPI interfaces. There is also an interrupt pin that you can use to signal your microcontroller when a touch is detected. We have equipped the chip with a 3V voltage regulator and level shifting, allowing it to be safely used with 3V or 5V logic. It is a well-designed chip and provides very stable, precise readings. We also found it to be much faster than trying to handle all readings on an Arduino.

For screens with FPC cables spaced 1 mm apart, you can plug the cables directly into the connector. The majority of medium and large touchscreens have this type of connection. If you have a different type of touchscreen, the four X/Y contacts are available in a 0.1-inch grid, allowing you to solder or wire them manually.

Getting started is super easy with our well-written STMPE610 Arduino library, which supports I2C, hardware SPI, and software SPI. Any 4-pin resistive touchscreens with 1 mm spacing to the integrated FPC connector. When you touch the screen, you will receive readings on the serial console. The wiring information is included in the example sketch.