MPR121 - 12 Channel Capacitive Touch Sensor Controller Module - I2C Interface

Premium quality electronics from The Engineer Store, Bengaluru. Fast shipping, 7-day warranty on manufacturing defects, expert support.

Specifications

Feature	Details
Product Type	Capacitive Touch Sensor Controller IC
Channels	12 Independent Touch Inputs
Interface	I2C (400 kHz)
Operating Voltage	1.71V - 3.6V
Address	Configurable (0x5A-0x5D)
Package	QFN-20 or Breakout Board
Origin	Original/Authentic
Warranty	7-day warranty on manufacturing defects
Support	Email & WhatsApp 24/7

Key Features

• 12 Independent Capacitive Touch Inputs - Control up to 12 touch-sensitive buttons/pads
• I2C Communication - Easy integration with Arduino, Raspberry Pi, STM32, and other microcontrollers
• Low Power Consumption - Ideal for battery-powered applications
• Auto-Calibration - Automatically adjusts to environmental changes
• Configurable Sensitivity - Fine-tune touch detection thresholds
• Multiple Operating Modes - Support for different touch detection algorithms

Why Choose This?

100% Authentic - Sourced from trusted suppliers with verification

Fast Shipping - 1-5 days from Bengaluru warehouse, delivered in 7-8 days

Expert Support - Technical guidance included

Competitive Pricing - Best value for quality components

Bulk Discounts - Wholesale rates on 10+ units

Applications

DIY & Hobbyist Projects

• Custom touch-sensitive control panels
• Interactive art installations
• Smart home automation interfaces
• Gaming controllers

Professional & Industrial

• Medical device interfaces
• Industrial control panels
• Point-of-sale systems
• Smart appliance controls

Educational & Learning

• Embedded systems projects
• IoT development
• Sensor interfacing tutorials
• Microcontroller experimentation

What's Included

• MPR121 Module (Breakout Board or IC)
• Datasheet & Technical Documentation
• Sample Code & Libraries
• Wiring Diagram
• Email/WhatsApp Support Access

Technical Highlights

• Detection Range: Up to 50mm with proper electrode design
• Response Time: <100ms typical
• I2C Address Selection: 4 different addresses via pin configuration
• Power Supply: Requires 3.3V (with 5V tolerant I2C pins)
• Electrode Flexibility: Works with various materials (copper, conductive paint, etc.)

Getting Started

1. Connect VCC, GND, SDA, SCL to your microcontroller
2. Configure I2C address via address pins (if needed)
3. Load MPR121 library for your platform
4. Set up touch pads using conductive materials
5. Calibrate sensitivity and thresholds
6. Start detecting touches!

Frequently Asked Questions

Is this 100% authentic?

Yes, sourced from authorized distributors with full authentication verification. Each module is tested before shipment.

What warranty is provided?

7-day warranty on manufacturing defects covering all manufacturing defects. We also offer 7-day money-back guarantee for defective items.

How fast is shipping?

7-8 days to most of India from our Bengaluru warehouse. Express shipping available for urgent orders.

Do you provide technical support?

Yes! Full technical support via email and WhatsApp 24/7. We help with wiring, coding, troubleshooting, and project guidance.

What is your return policy?

7-day returns on manufacturing defects only with full refund or replacement. applicable on manufacturing defects only for manufacturing defects.

Are bulk discounts available?

Yes! Wholesale pricing available on orders of 10+ units. Contact us for custom quotes.

Which microcontrollers are compatible?

Compatible with Arduino, Raspberry Pi, STM32, PIC, ESP8266, ESP32, and any microcontroller with I2C support.

Do you provide sample code?

Yes, we provide Arduino libraries, Python code, and example sketches. Full documentation included.

What's the difference between IC and Breakout Board?

The IC requires soldering expertise. The Breakout Board comes pre-assembled with headers for easy breadboard integration.

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The Engineer Store - Your Trusted Electronics Partner Since 2015

Buy MPR121 - 12 Channel Capacitive Touch Sensor Controller Module - I2C Interface Online in India

Purchase the MPR121 - 12 Channel Capacitive Touch Sensor Controller Module - I2C Interface online at The Engineer Store - India's most trusted electronics components store. We deliver across all major cities including Bengaluru, Mumbai, Delhi, Chennai, Hyderabad, Pune, Kolkata, Ahmedabad, Jaipur, and Surat. Get the best price on MPR121 - 12 Channel Capacitive Touch Sensor Controller Module - I2C Interface with fast 1-5 day shipping from our Bengaluru warehouse. All products are 100% authentic, sourced from authorized distributors with 7-day warranty on manufacturing defects.

Looking to buy MPR121 - 12 Channel Capacitive Touch Sensor Controller Module - I2C Interface at the best price in India? The Engineer Store offers competitive pricing, bulk discounts for orders of 10+ units, and dedicated technical support via email and WhatsApp. Whether you are a hobbyist, student, or professional engineer, we have everything you need for your electronics projects.