Gravity Analog Hall Sensor Module

The Gravity Hall sensor from DFRobot measures the strength of a magnetic field and outputs it as an analog voltage. When the south pole of a magnet faces the sensing surface, the voltage rises, with the north pole it falls. The sensor thus detects both poles within a range of ±1200 gauss, the distance is below 1 cm depending on the magnet. An LED lights up as soon as a magnetic field is detected. It works with 3.3 V and 5 V and fits Arduino, micro:bit and UNIHIKER.

Note: The connection cable can be converted to male pins with a Dupont cable M-M, so that it also fits an Arduino UNO.

Recommended Accessories:

• Dupont Cables M-M 10cm 20 Pieces
• Gravity IO Expansion Shield for Arduino V7.1
• 8x5mm Neodymium Disc Magnet

Features:

• Linear Hall sensor with analog output, detects north and south pole
• Low-noise output via a current source, little affected by supply fluctuations
• LED lights up when a magnetic field is detected
• Operation with 3.3 V and 5 V
• Gravity 3-pin connector: A, VCC, GND

Application Examples:

• Detecting magnetic poles and positions of magnets
• End positions and speed with a magnet on the moving part
• Monitoring current and motors via the magnetic field (DFRobot)
• Teaching about magnetism

Documentation:

• Wiki DFRobot DFR1132
• Schematic (image)
• Dimension drawing (image)

Technical Data:

• Manufacturer: DFRobot
• Manufacturer SKU: DFR1132
• Operating voltage: 3.3 V to 5 V
• Current consumption: 4.2 mA to 8 mA
• Measuring range: ±1200 Gs
• Distance: below 1 cm, depending on strength and direction of the magnetic field
• Output: analog
• Values Arduino and micro:bit: south pole 520 to 1023, north pole 0 to 500
• Values UNIHIKER: south pole 2068 to 4095, north pole 0 to 2028
• Indicator: LED
• Interface: Gravity PH2.0-3P (A, VCC, GND)
• Dimensions: 27 × 32 mm
• Weight: 3.5 g, with packaging and cable 12 g

Scope of Delivery:

• 1× Gravity analog Hall sensor module
• 1× Gravity sensor cable 3-pin analog, 30 cm