Description
Reviews
| Brand | - |
| Category | Robotics / STEM Teaching Tools / Sensors |
| Origin | - |
| Model Number | MCU-219 |
| Interface Type | I2C |
| Chipset | INA219 |
| Max Bus Voltage | 26V DC |
| Max Shunt Current | 3.2A (with 0.1Ω resistor) |
| Current Resolution | 1mA |
| Power Supply | 3.3V - 5V |
| Drift Characteristic | Zero Drift Architecture |
| Dimensions | 24mm x 15mm x 4mm |
| Weight | 3.5g |
Anonymous
Mar 23, 2026
Rating: 4/5
Great accuracy for the price
I compared readings against a multimeter and they were within 1% margin. The zero drift feature really helps maintain consistency over long test runs. Only wish the shunt resistor could handle slightly higher currents.
Anonymous
Mar 16, 2026
Rating: 5/5
Must-have for power analysis
If you are doing any serious embedded development involving power management, this is a must-have tool. The real-time data logging capabilities are impressive for such a small module.
Anonymous
Mar 14, 2026
Rating: 5/5
Compact and reliable
Small form factor fits perfectly inside my robot chassis. Setup took less than 10 minutes using the standard Adafruit library. Highly recommended for battery monitoring applications.
Anonymous
Mar 10, 2026
Rating: 5/5
Excellent documentation support
The datasheet is clear, and there are plenty of tutorials online. The bidirectional capability is useful for tracking charge and discharge cycles in my Li-ion packs.
Anonymous
Mar 09, 2026
Rating: 4/5
Good value sensor
Works as advertised. The soldering pads are well-sized for hand soldering. I deducted one star because the included header pins were slightly bent upon arrival, but easily fixed.
Anonymous
Mar 05, 2026
Rating: 5/5
Perfect for Arduino projects
This module works flawlessly with my Arduino Uno. The I2C communication is stable, and the library support is excellent. Measuring current and voltage simultaneously makes debugging power issues very easy.
Q: Is this compatible with Raspberry Pi?
A: Absolutely. Since it uses the I2C protocol, it is fully compatible with Raspberry Pi GPIO pins. Just ensure you enable the I2C interface in your Pi settings.
Q: Do I need an external pull-up resistor for the I2C lines?
A: Most breakout boards, including this MCU-219, come with onboard pull-up resistors. You generally do not need external ones unless you have multiple devices on the same bus causing signal issues.
Q: What is the maximum voltage this can handle without damage?
A: The module is rated for up to 26V DC on the bus line. Exceeding this voltage may permanently damage the sensor.
Q: Can I change the shunt resistor to measure higher currents?
A: Yes, advanced users can replace the onboard 0.1Ω shunt resistor with a lower value resistor to measure higher currents, but you must recalibrate the sensor in your code accordingly.
Q: Can this module measure negative current?
A: Yes, the INA219 chip supports bidirectional current measurement, allowing it to detect both charging and discharging states.
Heidelberg Printing Press Automatic Blanket Wash Cloth - Non-Woven Cleaning Fabric, 500m Roll
$3,185.00
Bucket Pack Natural Wood Colored Pencils Water-Soluble for Kids Coloring and Doodling
$6.65
Chunfei Grocery Store Yunm'an GR02 Gravel Bike - Thru-Axle Disc Brake, Lightweight Touring with Multiple Rack Mounts
$6,444.00
Variable Frequency Drive Power Board ZPOW-591 for ACS880
$2,200.00
Professional Sketching Eraser Kit - Blending Stumps, Sponges, and Paper Tortillons for Highlight & Shadow Correction
$3.90
Weighted Water Bag with Handle, Thickened PV Mesh Gravity Ballast for Banner Stand Fixation (8KG)
$35.10
Ultra-Fine Purification Lint-Free Cloth Cleaning Cloth Lens Wipe High Quality 0730 Water-Absorbing Dust Removal UV Nozzle 100 Sheets
$96.00
Wen Zhengming Small Regular Script Calligraphy Cards: Li Sao Jing, Thousand Character Classic, Qin Fu, Cao Tang Shi Zhi, Qing Jing Jing, Record of the Drunken Pavilion, Red Cliff Ode
$59.00
Zhizhi Manshu Zhao Mengfu Small Regular Script Collection of Ancient Classics (Vol. 1) - Calligraphy Copybook, Brush Writing Cards, Foldable Practice Cards
$49.00
Language of Drums Motion Path Set - Essential Creativity and Rhythm Teaching Material for Drum Kits and Jazz Drums
$59.14
onlycook Sink Drain Basket, Faucet-Mounted Food Residue Separator and Washing Strainer - 1 Pack
$14.10
Heavy-Duty Wiper Arms and Blades for Trucks and Agricultural Vehicles - Universal Replacement Wiper Rubber Strips
$5.50
Bus Adapter FEPL-02 for ABB Variable Frequency Drive
$1,230.00
Baby National Trend Rattle Toy – Chewable Silicone, Easy-Grip Handle, Soft Sound for Early Learning
$19.90
Palace Museum Creative Stationery: Light & Shadow Graffiti Coloring Book - Exquisite DIY Children's Gift, Ancient Style Watercolor Set for Boys and Girls, Early Learning Art Toy
$29.70
Dongyi Study Room Antique Brass Water Pot, Brush Washer Basin, and Small Spoon Set for Calligraphy (3-Piece)
$33.10
![[Deposit Only] Slightly Round Mid-Heel Shoes – Matte Lambskin Puff Lolita Bow Pumps](https://www.gosteppe.com/cache/small/product/269338/legacy-main-1108a4ac9d29ca837505d228.webp)
[Deposit Only] Slightly Round Mid-Heel Shoes – Matte Lambskin Puff Lolita Bow Pumps
$38.00
Chunfei Grocery Store Yunan GR02 Gravel Bike with Thru-Axle Disc Brakes, Lightweight Touring Setup with Multiple Rack Mounts
$8,934.00
5A Natural Madagascar Rose Quartz Loose Beads, Pink Crystal Rhodonite Single Beads for DIY Jewelry Making Accessories
$0.70
Mini Portable Sketchbook - Blank Pocket Notebook for Doodling, Sketching, Watercolor, Acrylic, and Marker Art - Square Hand-Drawn Journal
$5.53
Kitchen Sink Drain Mat with Raised Slope - Splash-Proof Countertop Organizer for Faucet Areas
$9.00
Front Wheel Bearing for Hyundai Mistra - Mingtuo Brand - Also Fits Hyundai Sonata and Kia Opirus - Front and Rear Auto Bearings
$275.00
White Crystal Loose Beads Donghai Agate Gemstone Gold Rutilated Quartz Obsidian Bracelet Strand Aquamarine Amethyst Single Bead
$8.42
Kids Art DIY Stamp Kit - Round Sponge Daubers, Mushroom Head Stamps, and Paint for Graffiti
$2.44
YP8 YP-80000 Book Block Pressing Machine Supply Robust Structure Reliable Application
$23,790.00
Feileniao Four Seasons Flowers Line Drawing Atlas - Chinese Ink Painting Guide for Brush Beginners
$39.90
365 Days! Drummer Training Plan - Beginner Self-Study Guide for Drum Kits and Jazz Drums with Tutorial Audio
$55.00
New Rechargeable Electric Incense Making Machine – Compact Home Device for Extruding Coil, Sandalwood, and Stick Incense, Manual Incense Crafting Equipment
$268.00
Tire Stone Removal Hook, Multi-Function Tool with Built-in Screwdriver for Window Breaking and Self-Defense
$7.51
Pearl Sand Wax, Ice Flower Wax, Floating Aromatherapy Candle Colored Suspended Particles for Atmosphere Decor and DIY Crafts
$5.78
![[Youxin Electronics] GP2Y0E03 Infrared Distance Sensor Module 4-50cm Range](https://www.gosteppe.com/cache/medium/product/74667/legacy-main-4da8cadc5fc82afe91b124e3.webp)
![[Trial Pack] Xianlang Complete Cat Treat Sticks Meal Packs Main Course Cans Freeze-Dried Cat Food Sample Snacks Gift Set](https://www.gosteppe.com/cache/medium/product/208273/legacy-main-9ec245ebf781f65a434ba854.webp)
