Description
Reviews
| Brand | - |
| Category | Robotics / STEM Teaching Tools / Sensors |
| Origin | - |
| Sensor Type | Hall Effect Current Sensor |
| Available Ranges | 5A, 20A, 30A |
| Operating Voltage | 5V DC |
| Output Sensitivity (5A) | 185 mV/A |
| Output Sensitivity (20A) | 100 mV/A |
| Output Sensitivity (30A) | 66 mV/A |
| Bandwidth | 80 kHz |
| Response Time | 5 µs |
| Isolation Voltage | 2.1 kV RMS |
| Package Type | Breakout Board with Header Pins |
Anonymous
Mar 28, 2026
Rating: 5/5
Ideal for solar monitoring
I am using the 20A version to monitor my small solar panel output. It handles the current spikes well and the isolation gives me peace of mind.
Anonymous
Mar 17, 2026
Rating: 5/5
Compact and effective
Very compact design fits easily into tight enclosures. The 5A model is surprisingly sensitive and great for low-power consumption tracking.
Anonymous
Mar 11, 2026
Rating: 4/5
Good value but needs calibration
The sensor is accurate enough for general use, but you definitely need to calibrate it against a known load for precise measurements. The build quality is solid.
Anonymous
Mar 10, 2026
Rating: 5/5
Perfect for Arduino projects
This module works flawlessly with my Arduino Uno. The calibration was straightforward, and the readings are stable. Great for monitoring battery discharge rates.
Anonymous
Mar 09, 2026
Rating: 5/5
Reliable for student projects
Bought ten of these for our robotics club. They are durable and easy to solder. Students found the documentation online very helpful for integration.
Anonymous
Mar 07, 2026
Rating: 3/5
Works but noisy output
The sensor functions as described, but I noticed some noise in the output signal. I had to add a capacitor to smooth the reading. Otherwise, it's okay for the price.
Q: Does the 30A version overheat at continuous 25A load?
A: The sensor is rated for up to 30A, but running near the maximum limit continuously may cause heating. We recommend ensuring adequate airflow or using a heatsink for loads above 20A.
Q: Can this module measure AC current as well as DC?
A: Yes, the ACS712 sensor can measure both AC and DC current. The output voltage will vary around the VCC/2 baseline depending on the direction and type of current.
Q: Is there a library available for Raspberry Pi?
A: Since this is an analog sensor, it does not connect directly to the digital GPIO of a Raspberry Pi without an ADC (like MCP3008). Once connected via ADC, standard Python libraries for that ADC can be used to read the values.
Q: What is the accuracy tolerance of this sensor?
A: The typical total error is around ±1.5% to ±2% at room temperature, but this can vary slightly based on the specific range (5A, 20A, or 30A) and external electromagnetic interference.
Q: What is the exact pinout for connecting this to an ESP32?
A: Connect the VCC pin to 5V (or 3.3V if your specific board supports it, though 5V is recommended for stability), GND to GND, and the OUT pin to any analog GPIO pin on the ESP32.
Rechargeable Generation 2 Personal Air Purifier - Safe Portable Electric Fan for Travel Commuting and Flights
$181.00
Integrated Sink Splash Guard with Silicone Drain Mat - Auto-Draining Countertop Organizer
$23.30
Ultra-Light Aluminum Camping Light Pole – Foldable Mini Lamp Stand for Outdoor Picnics and Tabletop Use
$8.33
bimoz Under-Desk Cable Organizer No-Drill Shelf for Home Office Socket Strip Router Wire Data Cable Fixer Minimalist Wire Winder Dual-Side Mount Ventilated Design
$40.80
Extended Deep-Cut External Thread Tool Holder with Relief Groove for Swiss-Type Lathe HKFF42R6001
$15.50
Meiao Dental Imported Dental Implant Package, Swiss ITI Straumann Implant Abutment, False Teeth, Filling, and Planting
$14,188.00
Assorted Colors Kids' Painting Crayons - Washable Oil Pastels in 12, 18, 24, or 36 Colors for Graffiti and Coloring
$2.47
Fruit and Vegetable Slicer - Stainless Steel Commercial Electric Multi-Function Shredder for Radish, Potato, Cucumber, Pepper, Automatic
$2,880.00
CAAS-Developed Granular Insecticide and Fungicide for Vegetable Gardens – Soil Pest Control and Fertilizer for Enhanced Vegetable Growth and Yield
$13.50
Marie's C6823 Sketch Blending Stumps (3-Pack), Professional Charcoal and Pastel Smudging Tools for Art Students and Beginners, Hard/Small/Highlight Set on Newsprint
$7.48
Inverted Water Dispenser Stand with Manual Pump for Large Mineral Water Bottles
$67.00
Lanzhai Flagship Store Multifunctional Retro Brush Washer Set, Creative Ceramic Large National Painting Tea Rinse Bowl, Art Display Paperweight, Student Calligraphy Supplies
$8.42
Multi-Function Vanity Shelf Over Toilet - Floor-Standing Thickened Plastic Storage Cabinet for Squat Toilet Gaps
$52.49
100% Cotton Watercolor Paper Pad 300gsm - Cold/Hot Press, 8K/16K/32K Sizes, Glued on Four Sides for Academy & Portable Sketching
$11.90
Commercial Large Shredding Machine Tornado Potato Slicer Wavy Slice Equipment Carrot Slicer Multi-Function
$20,000.00
Electric Heating Pasteurization Tank – Horizontal Spray Type for Fresh Milk and Food Sterilization
$11,211.00
![[First Batch Deposit] Spring Cherry & Pear Snow - Original Lolita Ballet-Style Cake Dress Chinese JSK](https://www.gosteppe.com/cache/small/product/269019/legacy-main-be5286e5316da63aa7d52258.webp)
[First Batch Deposit] Spring Cherry & Pear Snow - Original Lolita Ballet-Style Cake Dress Chinese JSK
$5.00
Bottled Water Electric Pump Bracket, Mineral and Pure Water Dispenser, Automatic Water Outlet Device
$383.98
Micro-Hyperbaric Oxygen Chamber - Rigid Sit/Lie Model for Home and Commercial Use, High-Altitude Oxygen Therapy Room
$150.00
Stainless Steel Illuminated Hotel Room Number Plate, Smart Electronic Door Sign with Do Not Disturb and Make Up Room Bell
$10.00
Paper Blending Stump A1zdq001 - Large Art Sketch Highlighting Tool for Students
$4.15
Continental Run-Flat Tires 225 235 245 255 265/45 50 55R17R18R19R20R21R22
$350.00
3D Printing Pen for Children - 3D Stereoscopic Drawing Toy for Boys and Girls (Ages 6+)
$35.70
MOOCAT Loose-Leaf Refill – 300G Wood Pulp Fine-Texture Blank Paper for OC Binders A9/B5/M5/M6 Hand Drawing
$12.90
Lanzhai Calligraphy Wool Felt Mat – Mini Arm Rest and Inkstone Pad with Creative Chinese Style Design for Painting and Writing
$7.48
Qing Dynasty Calligrapher Lin Zexu Guangeti Small Regular Script: Buddha Speaks of the Infinite Life Sutra, Brush Tracing Practice Long Scroll Copybook
$8.80
Lightweight Ceramsite Bottom Padding, Professional Backfill for Sunken Bathroom Engineering and Construction, Large Granules
$30.10
![[In Stock] MINISO YOYO Wind-Chasing Diary Series Aromatherapy Figure Blind Box – Youyou-chan Ornament](https://www.gosteppe.com/cache/small/product/269008/legacy-main-75745db0463ce5521fe5703d.webp)
[In Stock] MINISO YOYO Wind-Chasing Diary Series Aromatherapy Figure Blind Box – Youyou-chan Ornament
$49.00
Sanitary Juice Beverage Dairy Mixing Tank Food Pharmaceutical Electric Heating Emulsification Reaction Dissolution Tank
$4,122.00
Zhi Paper Calligraphy Copybook: Shen Du's Red Cliff Ode, Jingzhai Zhen, and Bu Zi Qi Shuo - Small Regular Script Cards for Tracing Practice
$17.00
![[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)
