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MPR121 Capacitive Touch V12 Breakout board
MPR121 V12 capacitive touch breakout board with 12 touch inputs and I²C interface—ideal for multi-touch DIY projects, interactive devices, and home automation.
Description
The MPR121 Capacitive Touch V12 Breakout Board is a highly versatile sensor module that allows up to 12 touch inputs using capacitive sensing technology. It communicates via I²C interface, making it easy to integrate with microcontrollers such as Arduino, ESP32, ESP8266, and Raspberry Pi.
This breakout board supports multi-touch detection with adjustable sensitivity, enabling responsive and accurate touch control for buttons, sliders, or custom touch interfaces. Its compact design and low power consumption make it ideal for touch-sensitive keyboards, interactive DIY projects, home automation, and wearable electronics.
With the MPR121 V12, users can quickly implement gesture controls and multi-touch interfaces without complex circuitry, providing a simple yet powerful solution for modern electronics projects.
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- Independent development MCU platform
- High cost performance
- Support UART / GPIO data communication interface
- Support STA / AP / STA + AP coexistence mode of operation
- Support SmartLink intelligent networking (APP)
- Support wireless upgrade firmware
- Support WPS network configuration
- Built-in onboard antenna &Temperature and humidity sensor
- RGB three-color light adjustable
- Provide rich AT command set configuration
- Free AiCloud cloud service for debugging
- 3 AA batteries / 5V adapter power supply
- Size: 61.6mm x 56.2mm;
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- Dormancy current: no dormancy.
- Used for a GPS navigation system, water, and electricity gas meter reading system.
- With the computer and Bluetooth adapter, PDA, seamless connection equipment.
- Bluetooth module HC-08 Master and slave Two in one module.
- Use the CSR mainstream Bluetooth chip, Bluetooth V2.0 protocol standards.
- Potter default rate of 9600, the user can be set up.
- Bluetooth protocol: Bluetooth Specification v2.0+EDR
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Text to Speech TTL Module (Serial to Speech)
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- Communication: Asynchronous 9600 bps serial (8N1)
- Dimensions: 1.25″x1.5″x0.37″
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Text support rate is better
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Interface operation is simpler
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5V single power supply.
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Output directly connected to the speaker, can drive 4 ohms 3W / 8 ohm 2W speakers
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Busy status output, can be connected to the microcontroller IO or indicator light, no need to be left floating.
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Voice effect optimization
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Module miniaturization and easy integration
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Dimension: 33*27.5mm
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With mounting holes
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