{"product_id":"adafruit-12-x-capacitive-touch-shield-for-arduino-mpr121","title":"Adafruit 12 x Capacitive Touch Shield for Arduino - MPR121","description":"\u003cp\u003eThis touch-able add on shield for Arduinos will inspire your next interactive project with 12 capacitive touch sensors.\u003c\/p\u003e\n\u003cp\u003eCapacitive touch sensing works by detecting when a person (or animal) has touched one of the sensor electrodes. Capacitive touch sensing used for stuff like touch-reactive tablets and phones, as well as control panels for appliances, which is where you may have used it before. This shield allows you to create electronics that can react to human touch, with up to 12 individual sensors.\u003c\/p\u003e\n\u003cp\u003eThe shield has 12 'figure 8' holes in it that can be gripped onto with alligator clip cables. Attach one side of the clip to the shield and the other side to something electrically conductive (like metal) or full of water (like vegetables or fruit!) Then start up our handy Arduino library to detect when the object is touched. That's pretty much it, very easy! For advanced users, you can also solder to a pad to make a slimmer \u0026amp; more permanent connection. Works great with any Arduino as it only uses the I2C pins (SCL \u0026amp; SDA).\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/learn.adafruit.com\/adafruit-mpr121-12-key-capacitive-touch-sensor-breakout-tutorial\/wiring\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eIt uses the same chip as the MPR121 12-Key Capacitive Touch Sensor Breakout so you can duplicate the library and code!\u003c\/a\u003e Adafruit have examples for reading touches. Using an \u003ca href=\"\/en-eu\/products\/arduino-leonardo-1\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eArduino Leonardo\u003c\/a\u003e and a little bit of creativity you can use it to turn touches into keyboard KeyUp\/KeyDown presses (so you can make a veggie-keyboard) or \u003ca href=\"\/en-eu\/search?q=music%20maker\" target=\"_blank\" rel=\"noopener noreferrer\"\u003epair it with a Music Maker shield\u003c\/a\u003e to create an audio player that will play a sound per sensor (fruit drums!)\u003c\/p\u003e\n\u003cp\u003eEach order comes with a Capacitive Touch Shield and a stick of 36-pin headers. You'll need to do some light through-hole soldering to attach the headers onto the shield circuit board, but its easy to do with basic soldering tools like a soldering iron and rosin core electronics solder. \u003ca href=\"\/en-eu\/products\/crocodile-leads-set-of-10\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eYou'll also likely want to pick up a pack of alligator clips!\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePlease note!\u003c\/strong\u003e This kit does not come with Arduino, alligator clips, or delicious fruit! However, we do have all of those in the store. Well, all except fruit...\u003c\/p\u003e\n\u003ch2\u003eTechnical Details\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003ePCB Dimensions: 53mm x 68mm x 2mm \/ 2.1\" x 2.7\" x 0.08\"\u003c\/li\u003e\n\u003cli\u003eHeight with Button: 5mm \/ 0.2\"\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/github.com\/adafruit\/Adafruit-MPR121-Capacitive-Touch-Shield-PCB\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eEagleCAD PCB files on GitHub\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/github.com\/adafruit\/Fritzing-Library\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eFritzing object in Adafruit Fritzing library\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eRevision History:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAs of December 5, 2022\u003c\/strong\u003e – Adafruit have updated this PCB to have the I2C pullups go to a configurable solder jumper and default to the Vref pin from modern Arduino boards. This will make it work a lot nicer with 3V Arduino-shaped boards. They've also updated the silk with \u003ca href=\"https:\/\/github.com\/adafruit\/Adafruit_Pinguin\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eAdafruit Pinguin\u003c\/a\u003e to make a lovely and legible silkscreen.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Adafruit","offers":[{"title":"Default Title","offer_id":1130740805,"sku":"ADA2024","price":12.95,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0174\/1800\/products\/2024-03_1.jpg?v=1672928165","url":"https:\/\/shop.pimoroni.com\/en-eu\/products\/adafruit-12-x-capacitive-touch-shield-for-arduino-mpr121","provider":"Pimoroni Ltd","version":"1.0","type":"link"}