Description
Reviews
| Brand | - |
| Category | Electronic Components / Maker DIY / Computer Hardware, Monitors & Peripherals |
| Origin | - |
| Interface | I2C |
| Operating Voltage | 3.3V - 5V DC |
| Touch Channels | 12 Independent Inputs |
| Communication Protocol | Standard I2C (Up to 400kHz) |
| PCB Dimensions | 20mm x 28mm |
| Weight | 3 grams |
| Operating Temperature | -40°C to 85°C |
| Sleep Mode Current | 30µA |
| Compatibility | Arduino, Raspberry Pi, ESP32 |
| Package Contents | 1x MPR121 Board, 1x Header Pin Set |
Anonymous
Apr 10, 2026
Rating: 4/5
Works as expected
Good value for money. I2C addressing is straightforward. Wish it came with soldered headers by default.
Anonymous
Apr 08, 2026
Rating: 5/5
Reliable capacitive touch
Used this for a control panel. No false triggers once calibrated properly. Highly recommend for automation.
Anonymous
Mar 30, 2026
Rating: 5/5
Perfect for prototypes
Cheap and effective. Allows me to test touch interfaces without designing custom PCBs. Fast shipping too.
Anonymous
Mar 29, 2026
Rating: 4/5
Good sensor, minor learning curve
The hardware is solid. Took some time to find the right library but works well now. Calibration is key.
Anonymous
Jan 21, 2026
Rating: 5/5
Great for DIY Keyboards
Works perfectly with my Arduino project. Very sensitive and easy to configure using available libraries.
Q: Is this compatible with 5V logic microcontrollers?
A: Yes, the board includes a voltage regulator and level shifting suitable for 3.3V and 5V systems.
Q: Does it work through plastic or glass overlays?
A: Yes, capacitive touch works through non-conductive materials like plastic or glass up to a certain thickness.
Q: What is the typical response time for touch detection?
A: The scan rate is configurable, typically around 1ms per electrode in fast mode depending on settings.
Q: Can I connect multiple boards to the same microcontroller?
A: Yes, you can connect up to 4 boards simultaneously by configuring different I2C addresses.
Q: Is there a specific library required for Arduino?
A: Several open-source libraries are available on GitHub and the Arduino Library Manager for easy integration.
Ruke Floating Skimmer Machine for Sewage Treatment Plant Biochemical Tanks
$12,064.00
Car Tire Stone Removal Tool Rock Picker Anti-Explosion Hook Stone Cleaner Car Hook Window Breaker Hammer
$2.07
Negotiable Price: Siemens 10mA Leakage Circuit Breaker, 2P 16A Ground Fault Protection
$130.00
Jingdezhen Ceramic Brush Washer Set, Blue and White Porcelain Calligraphy Ink Well and Pen Holder
$14.99
Beishanlang Outdoor Camping Foldable Lighting Stand Aluminum Alloy Portable Lamp Pole Bracket Camp Light Night Fishing Light
$49.00
Mobile Gas Cylinder Stand with Wheels - Plastic Base Tray for Propane Tanks and Water Buckets
$10.65
Fast Grocery Shopping Cart, Foldable Portable Home Trolley with Stair-Climbing Wheels, Lightweight Hand Truck for Seniors
$299.06
Car Tire Stone Hook - Multi-Function Rust-Resistant Tool for Removing Stones from Tires
$8.33
Zunjue 100% Cotton Watercolor Paper Mini Portable Pocket Sketchbook for Travel, 300g Cold Press Thickened Art Notebook for Gouache, Oil Pastel, and Colored Pencil
$3.32
Large Capacity Waterproof Phone Pouch for Outdoor Diving, Rafting, and Swimming - Touchscreen Compatible Waist Bag with Storage
$2.50
Custom Office Meeting Door Sign – Switchable 'Do Not Disturb' & 'Please Knock' Plate
$5.00
Multi-Function Over-Toilet Storage Rack – No-Drill, Multi-Tier Floor Stand for Bathroom Laundry Gap
$28.48
External Round Thread Welding Turning Tool, Threading Tool, Zhuzhou Alloy YT15 YG8 YW2 Lathe Tools, 20*25*30 Square
$17.00
Traditional Children's Rattle Drum, Classic Baby Hand-Shake Instrument, Plastic Toy for Newborn Boys and Girls
$2.90
Ultra-Soft Dual-Tip Blending Stump Set for Oil Pastels & Sketching – Washable Smudge Tools for Shading and Detail Work
$3.39
Chengzhutang Foldable Water Bucket Chinese Painting Brush Washer Gouache Watercolor Paint Cleaning Pail Art Student Brush Basin Collapsible Cup Oil Painting Color Pigment Bucket
$9.80
Meiao Dental Nobel Biocare Import Package - Swedish Dental Implants, Crowns, Abutments, and Dentures
$15,888.00
Outdoor Waterproof ABS Plastic Case - Shockproof Moisture-Proof Storage Box with Cushioning for EDC Tools and Travel
$12.00
Natural Loofah Dish Cloth - Oil-Resistant, Non-Scratch Industrial Scouring Pad
$3.43
Paper Blending Stumps for Sketching - Professional Art Supplies for Highlights, Shadows, Pastels, Oil Pastels, and Colored Pencils - Complete Set for Beginners and Artists
$4.40
Aromatherapy Cup Candle Container DIY Crystal Diffuser Stone Cup Plaster Cement Cup Glass Vessel Demagnetizing Bowl
$4.68
American Chicano West Coast Style Neon Sign - Gothic Script Rap Shop Decor, Opening Gift, Living Room Light-Up Art
$279.00
Data Cable Organizer, Desktop Fixed Charging Cable Storage, Solid Wood Phone Power Cord Clip, Anti-Tangle Adhesive Hook, No-Drill Computer Wire Winder, Wooden Edge Hanging Cable Collector
$35.00
Forest Wooden House Building Blocks - Educational Treehouse Toy for Boys and Girls, Board Game Trendy Blind Box
$12.90
German B&W Safety Case for Folding Knives - EDC Tool Storage Box, Waterproof, Moisture-Proof, Shockproof, Models 1000-3000
$245.00
Fuzao Kids 3D Printing Pen 2026 New Arrival Viral Pretend Play Toy for Girls Educational Gift for Ages 3+ Children's Day
$48.90
UHT Ultra-High Temperature Sterilizer, Room-Temperature Set Yogurt Production Line, Yogurt Processing Equipment, Stirred Yogurt System
$80,640.00
Professional Sketch Blending Kit for Art Students: Gray Tone Pencils, Sponges, Stumps, and Erasers
$4.17
Custom Solid Wood Signboard with Engraved Lettering, Advertising Carved Plaque for Homestays, Tea Rooms, Studios, Wooden Entrance Hanging Sign
$16.90
MOKO Stainless Steel Expandable Dish Drainer - Multi-Function Kitchen Sink Rack for Bowl and Plate Storage
$28.00
![[Youxin Electronics] Soil Moisture Meter Detection Module, Soil Moisture Sensor for Intelligent Robot Cars](https://www.gosteppe.com/cache/medium/product/3877/legacy-main-eca7a3fa750966e5dca86bbf.webp)
![[Corrosion-Resistant] DFRobot Capacitive Soil Moisture Sensor Module Dry/Wet Detection](https://www.gosteppe.com/cache/medium/product/3259/legacy-main-2f0d3454b36b32391d263648.webp)
