Mpr121 Capacitive Touch Sensor Module Sensor Keys Keyboard Keys for

• Usage: Server
• Condition: New
• Transport Package: PP Bag
• Shipping Cost: Estimated freight per unit.: about shipping cost and estimated delivery time.
• Currency: US$
• Return&refunds: You can apply for a refund up to 30 days after receipt of the products.
• Model NO.: MPR121
• Trademark: Sunhokey
• Origin: China
• Production Capacity: 100000
• Package Size: 5.00cm * 5.00cm * 5.00cm
• Package Gross Weight: 0.100kg

Product Description

Warm prompt: Dear buyer, Our cheapest transportation services Economic category logistics (SunYou Economic Air Mail ,China Post Ordinary Small Packet Plus ) can be traced only befor it arrive your country,please choose Standard category logistics if you want a full tracking info.

MPR121 Keypad Example Phone Dialing Code

 by: Jim Lindblom

     SparkFun Electronics

 created on: 1/6/10

 license: CC-SA 3.0

 

 Turns the MPR121 Touchpad into a phone keypad. Pressing a pad will

 print a 0-9, * or #.

 

 Hardware: 3.3V Pro Mini

           SDA -> A4

           SCL -> A5

           IRQ -> D2

           

 I wasn't having any luck using the Wire.h library, so I've adapted

 I2C code from an ATmega328 library to get this working.

 If you can get this working with the Wire.h library, I'd be thrilled to hear!