Making an electromagnet is super easy! Just grab a solenoid, run some current through it, and pop a piece of soft iron inside. When you switch off the current, the magnetism disappears. This electromagnet only needs about 5VDC to work (4 - 6V also works well). Once powered, it becomes a magnet; turn off the power, and it's just a regular piece of metal. As it's a coil, you'll need a motor or solenoid driver with kick - back protection. Our Crickit boards are a great match. Remember, the 'holding force' of 2.5Kg (5.5lb) is not the weight it can pick up. Divide the holding force by 5 - 10 for a rough pick - up weight estimate, which is about 1 lb in this case. The pick - up weight depends on a flat surface, maximum surface contact, and the ferromagnetic metal content. A flat steel cube works best, while oddly - shaped or rubber/plastic - covered items won't work as well.
Using this electromagnet is a breeze. First, power it with around 5VDC (anywhere between 4 - 6V is okay). You'll need a motor or solenoid driver with kick - back protection, and our Crickit boards are perfect for this. When the power is on, it becomes a magnet. When you turn it off, it stops being magnetic. Now, about the weight it can pick up. The 'holding force' of 2.5Kg is not the actual pick - up weight. Divide the holding force by 5 - 10 to get a rough idea of what it can lift. Make sure the item has a flat surface and maximum contact for better results. Also, it works best with ferromagnetic metals like a flat steel cube. Avoid using it with oddly - shaped or rubber/plastic - covered items. As for maintenance, keep it clean and dry. If you're not using it for a long time, store it in a cool, dry place.
