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This is a prototype of a magnetic sensor BoosterPack for the TI MSP430 Launchpad.

 

http://www.youtube.com/watch?v=whgsB5hb-Pk

 

The board has 3 Hall-effect magnetic sensors that sense a magnetic filed in the z-axis to the sensor. The BoosterPack has a latched output sensor (on/off by changing magnetic field direction), unlatched output sensor (on/off by changing magnitude of magnetic field), and analog output sensor (output follows strength of magnetic field). The sensor outputs are connected to analog input pins of the MSP430 LaunchPad. 10 LEDs are connected to digital output pins of the MSP430 LaunchPad to indicate the output of each of the sensors, and 1 LED indicates when power is connected to the board. The demo programming was quickly and easily written by a novice programmer using the Energia software.

We see applications for this BoosterPack as an educational demo on magnetism and programming, a toy for young hobbyists and inventors, and as another building block in the MSP430 LaunchPad ecosystem.

Any and all stimulating comments would be much appreciated! Thanks.

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Neat. You could cut down on parts if you simply switched from three distinct modes to using a switch to change between them, which could then be used to turn this into a multi-sensor type board. Add a light/color sensor, or a motion sensor, etc.

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