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Show HN: Smartphone Magnetic Field Visualizer
- dddddaviddddd 7y agoUsed the digital compass in my phone the other day to set various lab magnetic stirrers to the same rotational velocity using a app that plotted the reading from the sensor over time. Incredible what the average smartphone is equipped to do.
- redwards510 7y agoLOL I do not envy the weird emails you are going to get from psychotics and ghost-hunters around this thing..