This 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 are four jumpers on the bottom of the board, all of which are set (closed) by default. An address jumper ties the ADD pin to the 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 do not require the pull-up resistors you can open the jumpers by cutting the trace connecting them.
MPR121 Capacitive Touch Sensor Module – I2C Keyboard Controller
₹83.30 Original price was: ₹83.30.₹61.70Current price is: ₹61.70. (Excl. GST 18%)
Availability: In stock
- Supports 12 capacitive touch inputs
- I2C communication for easy integration
- Low power consumption
- Ideal for touch-based control projects
- Compact and reliable performance
Weight | 0.008 kg |
---|---|
Dimensions | 2.5 × 2.5 × 0.7 cm |
SKU/Model Number | MPR121 |
Category | Capacitive Sensor |
Material | PCB |
Color | Green |
Input Voltage (V) | 3.3V – 5V |
Output Voltage (V) | N/A |
Current Rating (A) | 0.02A |
Power Rating (W) | 0.1W |
Frequency (MHz/GHz) | N/A |
Communication Protocol | I2C |
Interface Type | Through-hole |
Number of Pins | 12 pins |
Special Features | Capacitive touch sensor for touchpads |
Compatible Boards | Arduino, Raspberry Pi |
Compatible Voltage Range | 3.3V to 5V |
Use Case | Touch sensing interface for user interaction |
Warranty
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