ACS712 5A Current Sensor Module - Precise Hall-Effect Measurement
ACS712 5A Current Sensor Module – 5A Hall-Effect Current Monitoring
The ACS712 5A Current Sensor Module provides precise current measurement using Allegro’s hall-effect technology. It outputs an analog voltage linearly proportional to sensed current, making it ideal for microcontroller-based projects. Use it to monitor power consumption, protect circuits, or build smart energy meters.
Key Specifications
| Specification | Value |
|---|---|
| Current Range | ±5A |
| Sensitivity | 185 mV/A |
| Supply Voltage | 5V DC |
| Output Type | Analog (0–5V) |
| Bandwidth | 80 kHz |
| Isolation Voltage | 2.1 kVRMS |
What You Can Build With This
- Overcurrent protection circuit for a bench power supply
- Real-time current monitoring dashboard with Arduino and OLED
- Battery charge/discharge logger for solar setups
- Motor stall detection in robotics projects
Compatibility
Works with any 5V microcontroller that has an analog input, including Arduino Uno, Nano, and ESP8266 (with ADC). Connect to 3.3V boards via voltage divider, though full 5V scale ensures best resolution. Commonly paired with I2C ADC modules for 3.3V systems.
Wiring Notes
Connect VCC to 5V, GND to common ground, and OUT to an analog pin. The module passes current through screw terminals; ensure load is within 5A. For noisy environments, add a small capacitor near the VCC pin to reduce ripple.
Why Buy from Compoden
Every component is sourced from verified suppliers and tested for compatibility before listing. We've spent 10 years building projects for makers, schools, and institutions across India. Ships from Bengaluru in 3-5 days. If defective on arrival, replace within 7 days.
Is this compatible with Arduino Uno?
Yes, the ACS712 module works directly with Arduino Uno’s 5V analog inputs. Connect OUT to A0 and read the voltage to compute current.
How do I convert the analog output to current?
The output voltage is 2.5V at zero current, with sensitivity 185 mV/A. Subtract 2.5V from the reading, then divide by 0.185 to get current in amperes.
Can I measure AC current with this module?
Yes, the ACS712 can measure both AC and DC. For AC, you’ll need to sample quickly enough to capture the waveform and calculate RMS.
📦 Free Setup Handoff Document Included
Every Compoden order includes a free setup handoff document — step-by-step instructions to get your component working within minutes. Download it via QR code on your package. The handoff document is also trained to help you troubleshoot the majority of problems.
What you can build with this
Shipping Information
- Prepaid Orders: ₹75 for orders up to ₹999, FREE shipping above ₹999
- COD Orders: ₹125 shipping + ₹50 COD fee = ₹175 total
- Delivery Timeline: Dispatch in 1-2 days, delivery in 2-7 days depending on location
Returns & Warranty
- 7-Day Return: Manufacturing defects only (approval required)
- Warranty: 7 days from delivery
- Non-Returnable: Batteries, consumables, cut wires, clearance items