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 then 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. It 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 unzipFile: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