MPR121 Capacitive Touch Sensor Controller Module I2C Keyboard DEMO Board For Arduino STM32 Raspberry Pi ESP32

MPR121 Capacitive Touch Sensor Controller Module I2C Keyboard DEMO Board For Arduino STM32 Raspberry Pi ESP32

$22.68

$22.68 $0.00

Description

SPECIFICATIONS

Brand Name: rtrobot

Choice: yes

High-concerned chemical: none

Origin: Mainland China

semi_Choice: yes

product	Quantity
MPR121 Touch Module	1
6 Pin Header	1
12 Pin Header	1

Introduction:

The MPR121 is the second generation sensor controller following the initial release of the MPR03x series of devices.

The MPR121 features an increased internal intelligence plus Freescale’s second generation capacitance detection engine.

Some major enhancements include an increased electrode count, a hardware configurable I2C address, an expanded filtering system with debounce, and completely independent electrodes with built-in autoconfiguration.

The device also features a 13th simulated electrode which represents the simultaneous charging of all the electrodes connected together. When used with a touch panel or touch screen array, the 13th simulated electrode allows a greater near proximity detection distance and an increased sensing area.

Because the chip of MPR121 sensor module only supports 3.3V voltage, we added 3.3V regulated IC and I2C level conversion when designing PCB, so thatMPR121 capacitive touch sensor controllermodule can be compatible with 3.3V and 5V microcontrollers (such as Arduino, STM32, ESP32, ESP8266, CC26XX etc.)

Parameter:

• Sensor chip: MPR121

• Operating Voltage: 3.3V ~ 5V

• Communication protocol: I2C

•Recommended operating temperature: -40℃ ~ 85℃

•Induction channel: 12

Pin description:

• GND: Power negative input port.

• VCC: Power positive input port.( 3.3V ~ 5V )

• SCL: I2C clock port.

• SDA: I2C data port.

• INT: Interrupt output.

• ADDR:I2CAddress Select Input Pin. Connect theADDRpin to the VSS, VDD, SDA or SCL line,the resulting I2Caddressesare 0x5A, 0x5B, 0x5C and 0x5D respectively.

• ElEx: Electrode input.

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