Difference between revisions of "Sensor-Hall"

Microduino-Hall

Microduino-Hall is the Hall sensor module, which can detect magnetic filed.

Microduino-Hall sensor is based on Hall Effect, as one of the magnetoelectric effect, which was found by A.H.Hall in 1879 when he was studing metal’s conductive mechcanism.

Features

• High detection flexibility and stability.

Specification

• Electrical specification
  • Output: Digital signal
  • 3.3V~5V operation voltage;
• Tech parameter
  • Pin description: GND, VCC, signal output and NC(Empty).
  • Digital output

• • Size of the sensor: 5mm*5mm，
  • Size of the board: 20mm*10mm
• 1.27mm-pitch 4Pin interface connects with Sensorhub.

• Connection method

Note: Here we adopt digital signal output and need to use digital interface to detect (D0~D13), which can connect to the number 3~9 pin of the Sensorhub, that is, D0,D2,D4,D6,D8,D10 and D12.

Document

• Schematic:File:Microduino Hall.Zip

Development

Preparation

• Make sure you’ve built Microduino IDE or you can refer to: [Microduino Getting started]]
• Core board selection
  • 1.Adopt Microduino-CoreUSB or mCookie-CoreUSB as the core.
  • 2.Adopt Microduino-Core or Microduino-Core+ as the core and Microduino-USBTTL as the program download module.

Program

• Open Arduino IDE, select File→Examples→Basics→DigitalReadSerial program examples, choose the right board, compile and download.

• int pushButton = 6; Define the input pin as D6, which can be changed by users according to personal needs.
• pinMode(pushButton, INPUT); Define pushButton as the input pin.
• int buttonState = digitalRead(pushButton); Read pushButton as the value of the input pin./

Hardware Buildup

• Connect the Hall sensor and Sensorhub to the D6 digital port, which is also the pin of “pushButton”mentioned above.
• For reference: Microduino-Sensorhub

• For reference: mCookie-Hub

• Connect the core, Sensorhub and Hall together to a computer with a USB cable.
• Select the right board and COM port, compile and download. You can refer to: [AVR Core：Getting started]]

• Open the serial monitor after download. The return value is “1” when it detects no magnetic field. By getting close to the Hall sensor with a magnet, you can get the return value “0” when detecting the magnetic field.

Application

Microduino-Hall Front

If Hall’s starting voltage is high level(V+), its surrounding magnetic field strength becomes intensified. When the intensity is bigger than Bnp, the output voltage between the two sides of the Hall sensor is the low level (V-). It keeps the same for the reverse.

• Suitable for detecting magnetic field and replacable switch function.

Project

Purchase

History

Pictures

• Front

Microduino-Hall Front

• Back

Microduino-Hall Back