Adafruit 12-Key Capacitive Touch Sensor Breakout - MPR121 -

Adafruit 12-Key Capacitive Touch Sensor Break

Adafruit

Adafruit 12-Key Capacitive Touch Sensor Breakout - MPR121 - STEMMA QT

Name: Adafruit 12-Key Capacitive Touch Sensor Breakout - MPR121 - STEMMA QT
Brand: Adafruit
SKU: AF1982
Price: 9.46 EUR
Availability: InStock

Item No.: AF1982

HAN: 1982

EAN: 4060137025501

HS Code: 9031808000

Herkunftsland: US

Lagerstufe: Tier3

9,46 €

per pack

incl. 19% VAT plus (S)

Net: 7,95 €

Choose tax zone / country of delivery

Description
Reviews
Others (1)

Product Description

DESCRIPTION

The MPR121 has support for only I2C, which can be implemented with nearly any microcontroller. You can select one of 4 addresses with the ADDR pin, for a total of 48 capacitive touch pads on one I2C 2-wire bus. Using this chip is a lot easier than doing the capacitive sensing with analog inputs: it handles all the filtering for you and can be configured for more/less sensitivity.

This sensor comes as a tiny hard-to-solder chip so we put it onto a breakout board for you. Since it's a 3V-only chip, we added a 3V regulator and I2C level shifting so it's safe to use with any 3V or 5V microcontroller/processor like Arduino. We even added an LED onto the IRQ line so it will blink when touches are detected, making debugging by sight a bit easier on you. Comes with a fully assembled board, and a stick of 0.1" header so you can plug it into a breadboard. For contacts, we suggest using copper foil or pyralux, then solder a wire that connects from the foil pad to the breakout.

We've now also added SparkFun qwiic compatible STEMMA QT connectors for the I2C bus so you don't even need to solder the I2C and power lines. QT Cable is not included.

TECHNICAL DETAILS

Uses I2C 7-bit address 0x5A (can be set to 0x5B, 0x5C or 0x5D)

Revision History:

As of Jan 21, 2021 - We've updated this sensor to our STEMMA QT standard for sensors. We have two STEMMA QT connectors on either side for quick connectivity. The physical size of the board and two mounting holes location have not changed. However, we did change the power/I2C breakout section pinout to match our standard pinout order!

Technical documents / Downloads

WikiManufacturer WikiOpen

Write the first review for this item and help others make a purchase decision!

Wiki

Manufacturer according to GPSR
Adafruit Industries LLC, Varick St. 150, 10013 New York, New York, Vereinigte Staaten, [email protected], https://eckstein-shop.de/Adafruit-Marken