Hall effect sensors allow you to measure the strength of magnetic fields. In this example we will be using a 49E hall effect sensor which will send back an analog value proportional to the measured magnetic field.
- First, connect your Breadboard to your WiFi and Power Station Blocks:
- Add the block to the canvas and open its Properties Panel:
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Click on the ‘Visual Map’ button and configure pins 1, 2 and 3 as follows:
IO1: AnalogIn
IO2: VCC
IO3: GND
NOTE: If you look at the datasheet for the sensor we can see that the pinout is different to the breakout board. This is because on the breakout board pcb the tracks are switched between Vcc and Gnd. Beware of this if you are configuring a the pins for a sensor other than this specific sensor.
- Connect the cable to your Breadboard block making sure the line from the ‘S’ side of the board is connected to pin 1:
- Now that the pins are configured we can go into the breadboard logic maker and start reading the sensor values. Using an INPUT Gate select IO1 from the drop-down menu.
- Connect the INPUT Gate to a DISPLAY Gate to see the sensor readings.
When passing a magnet near the sensor you will be able to see the values change. This value will change linearly in relation to the strength of the magnetic field.
In the demo I am using the magnets on the blocks to trigger the sensor reading changes.