Sunday, February 8, 2009
Through box switch
A test rig was constructed using an old Pelican case and an electromagnet from last year's team. First a hall effect switch was tested; in theory this switch will stop current flow when a certain density of magnetic flux is near it. Testing outside the box worked extremely well from all directions, but failed when connected to the test rig. The reed switch could be triggered through the test rig only using a stack of at least 4 rare earth magnets. If a stronger electromagnet could be found, I beleive that both could easily be triggered through the box. However, the hall effect sensor would be the way to go since the direction of the magnetic force does not effect its trigger.