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MPR121 Capacitive Touch Sensor Module
$0.6200
In stock
SKU
SEN-25-003
Volume discounts:
- +50 5 % $0.5900
- +100 6 % $0.5800
- +300 8 % $0.5700
- +500 11 % $0.5500
- +1000 13 % $0.5400
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MPR121 Capacitive Touch Sensor Module is a capacitive touch controller breakout board with an I2C interface. It supports 12 individual touch electrodes plus a simulated thirteenth electrode. The module also includes eight LED driving pins. These pins can be used for LED driving when they are not configured as electrodes. The board has onboard jumpers for address and pull-up settings. It is designed for Arduino use.
Features of MPR121 Capacitive Touch Sensor Module
- I2C interface
- 12 touch inputs
- Simulated thirteenth electrode
- Eight LED driving pins
- Automatic calibration
- Arduino support
Specifications of MPR121 Capacitive Touch Sensor Module
- Supply voltage: between 1.71 and 3.6 volts
- Current consumption: 26uA at 16ms
- Current consumption: 3uA in STOP mode
- Touch input count: 12
- Calibration method: automatic
- Interface: I2C
- Default I2C address: 0x5A
- Board size: 20 x 13mm
- No regulator on board
- Onboard 10k pull-up resistors
How to Use MPR121 Capacitive Touch Sensor Module
- Connect the module supply within the specified voltage range.
- Use the I2C interface to communicate with the board.
- Adjust the jumpers if you need a different address or pull-up configuration.
More Info
- Address jumper connects ADD to ground by default.
- SDA, SCL, and interrupt pins are connected to 10k pull-up resistors through jumpers.
| Interface Type | I2C |
|---|---|
| Operating Voltage (V) | 1.71V - 3.6V |
| Operating Current (mA) | 3uA - 26uA |
| Operating Temp (°C) | -40 to 85 |
| Output Type | I2C |
| Sensing Method | Capacitive |
| Chipset | MPR121 |
| Channels | 12-channel |
| Sensor Model | MPR121 |
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