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ICStation Blackberry Cellphone Tracking Ball Trackball Breakout Board Module ICSH044A Parameter: Working Voltage: 2.5~5.25V PCB Size: 22*28mm Description: The four spindles on the trackball have a tiny circular magnet in the end. Each of these are paired with an SMD hall effect sensor, which are used to measu... $4.99 SKU: 5646
$4.99