Attributes

Brand	-
Category	Robotics / STEM Teaching Tools / Sensors
Origin	-
Sensor Type	Hall Effect Magnetic Field Sensor
Display Type	0.96 inch OLED Digital Display
Communication Protocol	Modbus RTU / AT Command Set
Operating Voltage	3.3V - 5.0V DC
Measurement Range	-200mT to +200mT
Resolution	0.1 mT
Interface	UART (TX/RX)
Board Status	Bare Board (No Enclosure)
Dimensions	45mm x 25mm x 8mm
Application	Industrial Automation, Robotics, DIY Electronics

6 reviews

Anonymous

Mar 27, 2026

Rating: 5/5

Reliable Modbus implementation

Finally found a Hall sensor that speaks Modbus out of the box without needing an intermediate microcontroller. Saved me hours of coding.

Anonymous

Mar 26, 2026

Rating: 5/5

Perfect for industrial monitoring projects

The Modbus integration worked flawlessly with my PLC setup. The digital display is crisp and easy to read even in low light. Great value for a bare board module.

Anonymous

Mar 22, 2026

Rating: 3/5

Works well but display is fragile

The sensor itself is great, but since it comes as a bare board, the OLED screen got scratched during shipping. Recommend buying a case separately if you need durability.

Anonymous

Mar 21, 2026

Rating: 4/5

Good sensor, needs careful wiring

Accuracy is impressive for the price point. Just be careful with the pinout as it's not standard Arduino spacing. The AT commands are well documented in the wiki.

Anonymous

Mar 09, 2026

Rating: 5/5

Excellent response time

Used this for a magnetic levitation prototype. The update rate on the display and via serial is very fast. No lag detected during rapid field changes.

Anonymous

Mar 03, 2026

Rating: 4/5

Great for learning embedded systems

Using this for my senior design project. The AT protocol makes it easy to test via terminal before integrating into the main code. Wish it came with header pins soldered.

5 FAQ

Q: Does this module come with header pins pre-soldered?

A: No, this is sold as a bare board to keep costs down and allow for custom mounting. Header pins are not included but can be easily soldered by the user.

Q: What is the power consumption in standby mode?

A: In active mode, it draws approximately 15mA. There is no dedicated deep sleep mode, but you can cut power via a MOSFET or relay to minimize consumption when not measuring.

Q: Can I change the baud rate for the UART communication?

A: Yes, the baud rate is configurable via AT commands. The default is 9600, but it supports up to 115200 depending on your application needs.

Q: Is there a library available for Arduino?

A: We do not provide an official Arduino library, but the Modbus and AT command protocols are standard. Many users utilize generic Modbus libraries or write simple serial parsers.

Q: Is the measurement range sufficient for detecting strong neodymium magnets?

A: Yes, the +/- 200mT range is suitable for most neodymium magnets at a close distance. Please ensure the magnet is not placed directly against the sensor chip to avoid saturation.

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