We specialize in hard to find items
All Categories
QCCAN 8PCS MPR121 Breakout V12 Capacitive Touch Sensor I2C Keyboard Development Board Controller Module
Share Tweet
*Price and Stocks may change without prior notice
*Packaging of actual item may differ from photo shown
- Electrical items MAY be 110 volts.
- 7 Day Return Policy
- All products are genuine and original
- Cash On Delivery/Cash Upon Pickup Available
QCCAN 8PCS MPR121 Breakout V12 Capacitive Touch Features
-
The MPR121 is a capacitive touch sensor controller driven by an I2C interface. The chip can control up to twelve individual electrodes, as well as a simulated thirteenth electrode.
-
The MPR121 also features eight LED driving pins. When these pins are not configured as electrodes, they may be used to drive LEDs.
-
Low power operation, 1.71 V to 3.6 V supply operation.
-
There a four jumpers on the bottom of the board, all of which are set (closed) by default. An address jumper ties the ADD pin to ground, meaning the default I2C address of the chip will be 0x5A.
-
29μA supply current at 16 ms sampling interval period.
About QCCAN 8PCS MPR121 Breakout V12 Capacitive Touch
Features: - 3 μA Stop mode current. - 12 capacitance sensing inputs. - 8 inputs are multifunctional for LED driver and GPIO. - Complete touch detection. - Auto-configuration for each sensing input. - Auto-calibration for each sensing input. - Touch/release threshold and debounce for touch detection. - I2C interface, with Interrupt output. - MPR121: 3 mm x 3 mm x 0.65 mm . - -40°C to +85°C operating temperature range. Instructions: - The MPR121 is a capacitive touch sensor controller driven by an I2C interface. The chip can control up to twelve individual electrodes, as well as a simulated thirteenth electrode. The MPR121 also features eight LED driving pins. When these pins are not configured as electrodes, they may be used to drive LEDs. - There is no regulation on the board, so the voltage supplied should be between 2.5 and 3.6VDC. The VREG pin is connected through a 0.1uF capacitor to ground, which means, unless you modify the board, you can't operate the MPR121 in low-supply voltage mode (1.71-2.75VDC). - There a four jumpers on the bottom of the board, all of which are set (closed) by default. An address jumper ties the ADD pin to ground, meaning the default I2C address of the chip will be 0x5A. If you need to change the address of the chip (by shorting ADD to a different pin), make sure you open the jumper first. Jumpers also connect SDA, SCL and the interrupt pin to 10k pull-up resistors. If you don't require the pull-up resistors you can open the jumpers by cutting the trace connecting them. Package Included: 8* MPR121-Breakout-V12 Proximity Keyboard Touch Sensor
