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Showing results for tags 'Magnetic Sensors'.
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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.
In the quest to find a way to add crank position sensing to my EFI project, I came across this: http://www.ams.com/eng/Products/Magnetic-Position-Sensors/Magnetic-Rotary-Position-Sensors Put a bi-pole magnet on the end of a shaft, mount a chip close enough to the magnet and spin the shaft. Various ones output sine/cosine, absolute position, incremental pulses (one pulse per X degree), and PWM. If you find one (or two or three) you like, they offer samples of many of their products. I may have been lucky since I have a company-related email addressed and used that so I can't say any email address could be used, but who knows? On Oct. 20, I requested these: AS5140H-ASSU - up to 10,000 rpm per datasheet AS5232-HSST - up to 72,900 rpm per datasheet AS5048B-HTSB - no mention of rpm on datasheet but I imagine that'd be left to sampling the output waveforms and interpolating. ... and had a confirmation email the next day the order was accepted and another email Oct. 22 they were shipped FedEx from Vienna, Austria, no charge. Good luck.