{"id":15509866021101,"title":"2Pcs MPR121 Capacitive Touch Sensor Module 12-Button Keypad I2C Output","handle":"2pcs-mpr121-capacitive-touch-sensor-module-12-button-keypad-i2c-output","description":"\u003ch3\u003e2Pcs MPR121 Capacitive Touch Sensor Module 12-Button Keypad I2C Output\u003c\/h3\u003e\n\u003cp id=\"b\"\u003eThe MPR121 capacitive touch sensor module is a 12-key touch keyboard board\nwith I2C output and IRQ interrupt support. It is designed for low-power touch\nsensing applications and works well in DIY, embedded, and human-machine\ninterface projects. Product Specifications Operating Voltage: 2.5V–3.6V DC\nTypical Operating Current: 29 μA at 16 ms sampling interval Scan-Stop Current:\n3 μA Interface: I2C with IRQ Operating Temperature: -40°C to +85°C Pin\nDescription VCC: Power supply positive GND: Power supply negative SDA: I2C\ndata SCL: I2C clock IRQ: Interrupt output, active low Applications Touch\ncontrol panels DIY electronic keyboards Embedded human-machine interfaces\nCapacitive sensing projects Smart control systems\u003c\/p\u003e \n\n\u003ch3\u003eProduct Features\u003c\/h3\u003e\n \u003cul class=\"a\"\u003e\n \u003cli\u003e12-Key Capacitive Touch Input: The MPR121 module provides a simple 12-key touch-sensitive keyboard, making it ideal for DIY control panels, smart interfaces, and capacitive touch input projects.\u003c\/li\u003e\n \u003cli\u003eI2C Output for Easy Integration: Features an I2C communication interface with IRQ support, allowing simple connection to microcontrollers, development boards, and embedded systems for fast and reliable touch detection.\u003c\/li\u003e\n \u003cli\u003eLow Power Consumption Design: Operates at only 29 A during typical scanning and as low as 3 A in scan-stop mode, making it a great choice for battery-powered and energy-efficient applications.\u003c\/li\u003e\n \u003cli\u003eFlexible Voltage Range: Supports 2.5V to 3.6V DC operation. If your host board uses 5V logic, a level converter or 3.3V logic supply is required for proper compatibility.\u003c\/li\u003e\n \u003cli\u003eStable Performance Design: Built for dependable operation from -40C to +85C, this capacitive touch module is suitable for consumer electronics, industrial controls, and custom touch interface projects.\u003c\/li\u003e\n \u003c\/ul\u003e","published_at":"2026-11-07T13:11:52+11:00","created_at":"2026-11-06T18:15:48+11:00","vendor":"MakerCircuit","type":"Single Board Computers","tags":["electronics_NR_Nov2026"],"price":10100,"price_min":10100,"price_max":10100,"available":true,"price_varies":false,"compare_at_price":null,"compare_at_price_min":0,"compare_at_price_max":0,"compare_at_price_varies":false,"variants":[{"id":68199800602861,"title":"Default Title","option1":"Default Title","option2":null,"option3":null,"sku":"B0HFBWW1VQ","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"2Pcs MPR121 Capacitive Touch Sensor Module 12-Button Keypad I2C Output","public_title":null,"options":["Default Title"],"price":10100,"weight":28,"compare_at_price":null,"inventory_management":"shopify","barcode":null,"requires_selling_plan":false,"selling_plan_allocations":[],"quantity_rule":{"min":1,"max":null,"increment":1}}],"images":["\/\/leoforward.com\/cdn\/shop\/files\/B0HFBWW1VQ.jpg?v=1793949350","\/\/leoforward.com\/cdn\/shop\/files\/41seVlz7bhL.jpg?v=1793949350","\/\/leoforward.com\/cdn\/shop\/files\/41Nk6ZSAQCL.jpg?v=1793949350","\/\/leoforward.com\/cdn\/shop\/files\/31K6PofuhTL.jpg?v=1793949350","\/\/leoforward.com\/cdn\/shop\/files\/31C9e4n9ENL.jpg?v=1793949350","\/\/leoforward.com\/cdn\/shop\/files\/41oAYf8o_mL.jpg?v=1793949350"],"featured_image":"\/\/leoforward.com\/cdn\/shop\/files\/B0HFBWW1VQ.jpg?v=1793949350","options":["Title"],"media":[{"alt":null,"id":46879378309357,"position":1,"preview_image":{"aspect_ratio":1.0,"height":800,"width":800,"src":"\/\/leoforward.com\/cdn\/shop\/files\/B0HFBWW1VQ.jpg?v=1793949350"},"aspect_ratio":1.0,"height":800,"media_type":"image","src":"\/\/leoforward.com\/cdn\/shop\/files\/B0HFBWW1VQ.jpg?v=1793949350","width":800},{"alt":null,"id":46879378342125,"position":2,"preview_image":{"aspect_ratio":1.0,"height":800,"width":800,"src":"\/\/leoforward.com\/cdn\/shop\/files\/41seVlz7bhL.jpg?v=1793949350"},"aspect_ratio":1.0,"height":800,"media_type":"image","src":"\/\/leoforward.com\/cdn\/shop\/files\/41seVlz7bhL.jpg?v=1793949350","width":800},{"alt":null,"id":46879378374893,"position":3,"preview_image":{"aspect_ratio":1.0,"height":800,"width":800,"src":"\/\/leoforward.com\/cdn\/shop\/files\/41Nk6ZSAQCL.jpg?v=1793949350"},"aspect_ratio":1.0,"height":800,"media_type":"image","src":"\/\/leoforward.com\/cdn\/shop\/files\/41Nk6ZSAQCL.jpg?v=1793949350","width":800},{"alt":null,"id":46879378407661,"position":4,"preview_image":{"aspect_ratio":1.0,"height":800,"width":800,"src":"\/\/leoforward.com\/cdn\/shop\/files\/31K6PofuhTL.jpg?v=1793949350"},"aspect_ratio":1.0,"height":800,"media_type":"image","src":"\/\/leoforward.com\/cdn\/shop\/files\/31K6PofuhTL.jpg?v=1793949350","width":800},{"alt":null,"id":46879378440429,"position":5,"preview_image":{"aspect_ratio":1.0,"height":800,"width":800,"src":"\/\/leoforward.com\/cdn\/shop\/files\/31C9e4n9ENL.jpg?v=1793949350"},"aspect_ratio":1.0,"height":800,"media_type":"image","src":"\/\/leoforward.com\/cdn\/shop\/files\/31C9e4n9ENL.jpg?v=1793949350","width":800},{"alt":null,"id":46879378473197,"position":6,"preview_image":{"aspect_ratio":1.0,"height":800,"width":800,"src":"\/\/leoforward.com\/cdn\/shop\/files\/41oAYf8o_mL.jpg?v=1793949350"},"aspect_ratio":1.0,"height":800,"media_type":"image","src":"\/\/leoforward.com\/cdn\/shop\/files\/41oAYf8o_mL.jpg?v=1793949350","width":800}],"requires_selling_plan":false,"selling_plan_groups":[],"content":"\u003ch3\u003e2Pcs MPR121 Capacitive Touch Sensor Module 12-Button Keypad I2C Output\u003c\/h3\u003e\n\u003cp id=\"b\"\u003eThe MPR121 capacitive touch sensor module is a 12-key touch keyboard board\nwith I2C output and IRQ interrupt support. It is designed for low-power touch\nsensing applications and works well in DIY, embedded, and human-machine\ninterface projects. Product Specifications Operating Voltage: 2.5V–3.6V DC\nTypical Operating Current: 29 μA at 16 ms sampling interval Scan-Stop Current:\n3 μA Interface: I2C with IRQ Operating Temperature: -40°C to +85°C Pin\nDescription VCC: Power supply positive GND: Power supply negative SDA: I2C\ndata SCL: I2C clock IRQ: Interrupt output, active low Applications Touch\ncontrol panels DIY electronic keyboards Embedded human-machine interfaces\nCapacitive sensing projects Smart control systems\u003c\/p\u003e \n\n\u003ch3\u003eProduct Features\u003c\/h3\u003e\n \u003cul class=\"a\"\u003e\n \u003cli\u003e12-Key Capacitive Touch Input: The MPR121 module provides a simple 12-key touch-sensitive keyboard, making it ideal for DIY control panels, smart interfaces, and capacitive touch input projects.\u003c\/li\u003e\n \u003cli\u003eI2C Output for Easy Integration: Features an I2C communication interface with IRQ support, allowing simple connection to microcontrollers, development boards, and embedded systems for fast and reliable touch detection.\u003c\/li\u003e\n \u003cli\u003eLow Power Consumption Design: Operates at only 29 A during typical scanning and as low as 3 A in scan-stop mode, making it a great choice for battery-powered and energy-efficient applications.\u003c\/li\u003e\n \u003cli\u003eFlexible Voltage Range: Supports 2.5V to 3.6V DC operation. If your host board uses 5V logic, a level converter or 3.3V logic supply is required for proper compatibility.\u003c\/li\u003e\n \u003cli\u003eStable Performance Design: Built for dependable operation from -40C to +85C, this capacitive touch module is suitable for consumer electronics, industrial controls, and custom touch interface projects.\u003c\/li\u003e\n \u003c\/ul\u003e"}