Sensor-Hall

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mCookie-Hall Product number of mCookie Sensor—Hall:MSDS41 mCookie Sensor-Hall is a HAL49E linear hall sensor, which can detect the strength of the magnetic field. Sensor hall is a magnetic field sensor based on Hall effect. Hall effect is a kind of magnetoelectric effect, which is found by Hall（A.H.Hall，1855—1938）on 1879 when he was studying the conduction mechanism of the metal. Description of Sensor Pins Pins of the sensor: PIN1: GND PIN2: VCC General signal pins: PIN3(IO1): digital/analog signal PIN4(IO2): NC(null) Special signal pins: If it is IIC: IO1/IO2 are respectively SDA/SCL. If it is soft serial port: IO1/IO2 are respectively tx/rx. Special to Sensor-Hall sensor pins PIN1: GND PIN2: VCC PIN3(IO1): Analog signal input PIN4(IO2): NC Microduino sensor can communicate with core module through the connection with Microduino-Module Sensor Hub. Features With high detection sensitivity, and stability. A linear hall sensor with a polarity. Specification Sensor voltage 3.3V~5V working voltage Size of the sensor Size of the board: 23.5mm*13mm; 1.27mm-spacing 4Pin interface connected with sensorhub; Sensor CAD drawings: File:Sensor CAD.zip. Function description This sensor is 10-bit ADC（0~1023）, and the static value that the pin IO1 gets is 512; The strength of the magnetism changes according to south and north poles; If get close to the hall circuit from the back with the N pole, the output voltage will reduce, and the analog value will reduce（512~0）, too; If get close with S pole from the back, the output voltage will increase and the analog input value will increase（512~1023）, too; If from the front, the output state is opposite to from the back. Connection This sensor can be connected with the following interfaces of the core: A0~A7. Documents Schematic diagram: File:Microduino Hall.Zip.pdf HAL49E datasheet: File:Microduino Hall datasheet.pdf Development Program Download Download and unzip the program File:Microduino Hall Test.zip Programming Follow the Software Getting Started Guide. Select the Board, Processor and Port. Click [File]->[Open], browse to the project program address, and click "Microduino_Hall_Test.ino" to open the program. After confirming all these items are correct, click "→" to download the program to the development board. Hardware Setup Referring to the following picture, connect the Sensor-Hall to the analog interface A0 of Microduino-Sensorhub. Effect Observation After the download, open the serial port monitor. Get close to the hall circuit from the back with S pole. The output voltage of both ends of the hall sensor is during 2.5V~5V, and the analog value it returns is during 512~1023. Get close to the hall circuit from the back with the N pole. The output voltage of both ends of the hall sensor is during 2.5V~0V, and the analog value it returns is during 512~0. If get close to the circuit from the front, the output state is opposite to from the back. Application It is suitable for the detection of magnetic field strength. Projects= Purchase History Gallery Microduino-Hall Front Microduino-Hall Back