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Aceirmc 6Pcs Mpr121 Breakout V12 Proximity Keyboard Touch Sensor Capacitive Touch Sensor
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Vendor: Aceirmc
Type: Environmental Sensors
Sku: WBELEB0956BFTQD
Available: Available
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Aceirmc 6Pcs Mpr121 Breakout V12 Proximity Keyboard Touch Sensor Capacitive Touch Sensor
$14.80
Frequently Asked Questions
- Q: What is the MPR121 capacitive touch sensor and how does it work? A: The MPR121 is a capacitive touch sensor controller that operates via an I2C interface. It can manage up to twelve individual electrodes, allowing for touch detection on multiple surfaces. It also features eight LED driving pins, which can be used for additional functionalities.
- Q: What is the operating voltage range for the MPR121? A: The MPR121 operates within a voltage range of 2.5V to 3.6V DC. It is important to ensure that the power supply falls within this range to prevent damage to the sensor.
- Q: Can the MPR121 be used in low supply voltage mode? A: The MPR121 cannot be operated in low supply voltage mode (1.71V to 2.75V DC) unless modifications are made to the board. By default, the board does not support this mode.
- Q: What features does the MPR121 offer for touch detection? A: The MPR121 includes features such as complete touch detection, auto-configuration, and auto-calibration for each sensing input. It also has adjustable touch/release thresholds and debounce settings to improve touch accuracy.
- Q: How do I connect the MPR121 to my microcontroller? A: To connect the MPR121 to your microcontroller, use the I2C interface. Ensure that the SDA and SCL pins are connected to the respective pins on your microcontroller, and configure the address jumper as needed to match your setup.