Fingerprint Sensor AS608 - A Beginner's Guide
One touch can replace keys. This project uses an optical fingerprint sensor to enroll users and then grant access with a quick scan.
read tutorial →
Measure Current, Voltage, or Magnetic Fields with Ease
The Wattmeter I2C Digital Gravity for Arduino is a current or power sensor with i2c designed for power monitoring, motor feedback, magnetic detection, and control systems. It is a practical fit for makers, students, and engineers who want reliable sensor data in embedded builds.
Key details include Voltage Range (IN+ or IN- relative to GND): 0 ~ 26 V; Input Voltage (VCC): 3.3V~5.5V; Interface: Gravity I2C (logic level: 0-3.3V).
Why you’ll love it
- Key feature: High precision, high resolution, large range, low temperature drift
- Compatible: Compatible with 3.3V/5V controller
- Easy wiring: Gravity I2C (logic level: 0-3.3V)
- Power range: 0 ~ 26 V
- Sensing range: 0 ~ ±8A (Bidirectional current)
- Current draw: 1mA
Compare with similar products
| Product | Sensor style | Standout |
|---|---|---|
| Wattmeter I2C Digital Gravity for Arduino | current or power sensor with I2C | Current item |
| DC Current Sensor INA219 High Side Breakout 26V 3.2A Max | current or power sensor with I2C | I2C interface, motion sensing |
| Current 20A Analog Sensor Gravity | electric current electric potential magnetic sensor module with analog output | analog output, hall-effect detection |
| Current AC Sensor 5A | electric current electric potential magnetic sensor module | motion sensing |
What you can build
This sensor is a good fit for current meters, motor drivers, magnetic door sensing, power dashboards, and fault alerts.
Starter bundles
Pair it with an Arduino-compatible board, ESP32, or Raspberry Pi, plus an I2C cable or jumper wires for quick setup and testing.
Recommended add-ons
Useful add-ons include I2C cables, pull-up friendly boards, OLED displays, and logging modules, depending on how you plan to power, mount, and log the sensor.
Technical specifications
| Product | Wattmeter I2C Digital Gravity for Arduino |
|---|---|
| Interface | Gravity I2C (logic level: 0-3.3V) |
| Voltage Range (IN+ or IN- relative to GND) | 0 ~ 26 V |
| Current Range | 0 ~ ±8A (Bidirectional current) |
| Power Range | 0 ~ 206 W |
| Input Voltage (VCC) | 3.3V~5.5V |
| Voltage Resolution | 4 mV |
| Voltage Relative Error | <±0.2% (Typical) |
| Current Resolution | 1mA |
Wiring & usage notes
Connect VCC, GND, SDA, and SCL to your controller. Use the correct board voltage and I2C address in your code.
What’s in the box
1 × Wattmeter I2C Digital Gravity for Arduino
Frequently Asked Questions
What does the Wattmeter I2C Digital Gravity for Arduino measure?
It is designed to measure sensor data for embedded projects.
Can I use it with Arduino, ESP32, or Raspberry Pi?
Yes. It is well suited for common maker and embedded platforms, as long as you power it at the correct voltage and match the signal level to your controller.
How do I connect this I2C sensor?
This version uses I2C, so you usually connect VCC, GND, SDA, and SCL.
What affects accuracy?
Power quality, wiring, mounting, target material, and the real environment can all affect the reading. It is best to test and calibrate in the final setup.
Is it good for prototyping?
Yes. It is a practical choice for learning, proof-of-concept builds, and small automation projects.
Manila stock. Order before 16:00 PHT, ships today via J&T or LBC. Provincial: 1–3 working days.
Schools / class POs: we accept Purchase Orders for accredited schools and universities. contact us with your PO details.
Returns: 7-day inspection window for DOA units. Email proof of issue and we ship a replacement.
Customers also bought
Build with this board
Thumb Joystick - A Beginner's Guide
Wire a joystick to your Arduino, read X/Y, then print UP / DOWN / LEFT / RIGHT to the serial monitor.
read tutorial →Motor Drive (BTS7960 43A) - A Beginner's Guide
Bench-test a 43 A motor driver before wiring the full project. Catches weak power, mis-pinning, and dead boards before they cost you time.
read tutorial →Raspberry Pi Pico (RP2040) - A Beginner's Guide
Coming from UNO and the Pico won't show a COM port? Here's the BOOTSEL trick, the driver fix, and the first sketch that actually works.
read tutorial →Notes from the bench
Ask the community
Project Showcase — show what you built
Share what you built. Photos, BOM, what worked, what didn't.
view thread →How to ask a good question (and actually get answers)
Symptom + what you tried + clear photo = answers within hours.
view thread →ESP32 brownout when wiring a sensor — fixes that worked
Brownout reset when adding a sensor? Notes on supply decoupling and GPIO checks.
view thread →First Arduino — sketch upload error, what to try?
Upload failing on your first Uno? Driver, COM port, board match — checklist inside.
view thread →