Getting touchy performance with your screen's touch screen? Resistive
touch screens are incredibly popular as overlays to TFT and LCD
displays. Only problem is they require a bunch of analog pins and you
have to keep polling them since the overlays themselves are basically
just big potentiometers. If your microcontroller doesn't have analog
inputs, or maybe you want just a way more elegant controller, the
STMPE610 is a nice way to solve that problem.
This breakout board features the STMPE610, which has both I2C and SPI
interfaces available. There is also an interrupt pin that you can use
to indicate when a touch has been detected to your microcontroller or
microcomputer. We wrapped up the chip with a 3V voltage regulator and
level shifting so it's safe to use with 3V or 5V logic. Its a nicely
designed chip, and has very stable precise readings. We found its also
a lot faster than trying to do all the readings on an Arduino.
For the screens that have 1mm pitch FPC cables, you can plug the
cable right into the connector. The majority of medium/large
touchscreens have that kind of connector. If you have another kind of
touch screen, the four X/Y contacts are available on 0.1" pitch
breakouts so you can hand-solder or wire them.
Getting started is super easy with our well-written STMPE610 Arduino
library which supports I2C, hardware SPI, and software SPI. Plug any
1mm-pitch 4-wire resistive touchscreen to the on-board FPC connector.
When you touch the screen, you'll get readings on the serial console.
The wiring information is contained in the example sketch.
* Arduino STMPE610 Library 
 https://github.com/adafruit/Adafruit_STMPE610 … more
|Product type||Electronics module|
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