I am using a Parallax Melexis 90217 Hall-Effect Sensor (from Robotshop.com ) and a 16x2 alphanumeric LCD (from the Arduino Starter Kit) both work correctly form previous tests. The magnet is a strong Neodymium Magnet. What I want to do is print HIGH to the LCD when a magnet is present and print LOW …

Using a Hall Effect sensor with an LCD screen (solved)

Chagrin April 21, 2014, 8:45am 4

I would say that either you've wired the sensor backwards or you've blown it.

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