STEMMA QT MPR121 12-Key Capacitive Touch Sensor Gator - module with 12-channel touch sensor
ID: 1186904
zł39.90
Tax included
zł32.44 tax excl.
Module with 12-channel MPR121 capacitive touch sensor. The board is equipped with a Stemma QT connector and communicates via the I2C interface. Adafruit 4830
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14 days for return
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Description
Module with 12-channel MPR121 capacitive touch sensor. The system combines two functions: capacitance measurement and touch detection. The constant current capacitance detection function measures capacitances from 10 pF to over 2000 pF with a resolution down to 0.01 pF. Once the electrode capacitance data is collected, the sensor determines the touch or release state of the electrode by comparing it to a capacitance baseline value. The module has 12 completely independent electrodes with built-in auto-configuration and an interrupt generating output. For each of the channels, the user can connect a touch probe, e.g. using cables with alligator clips, and create a touch keyboard. The board is equipped with a Stemma QT/Qwiic connector and communicates via the I2C interface. It is powered by 3.3 V or 5 V. Full documentation of the module with examples of use is available on the product page.
Features
- Internal 10-bit ADC
- Integrated independent autocalibration for each electrode input
- Completely independent electrodes with built-in auto-configuration
- I2C interface, with IRQ interrupt, interrupt output informing about electrode state change
- 12 inputs for electrode and capacitance detection, 8 of which can also drive LEDs
- Autoconfiguration of charging current and charging time for each electrode input
- Separate pick-up and trip thresholds for each electrode, ensuring hysteresis and electrode independence
- Capacitance measurement from 10 pF to over 2000 pF
- Resolution 0.01 pF
- I2C interface
- I2C address: 0x5A (default), configuration jumper
- Voltage level converter
- Supply voltage: 3.3 V or 5 V
- Dimensions: 51 x 25.2 x 4.5mm
1186904
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Module with 12-channel MPR121 capacitive touch sensor. The board is equipped with a Stemma QT connector and communicates via the I2C interface. Adafruit 4830