A few days ago, I dropped a gazillion tiny screws and had to pick them up, one by one. So, to help all those who sympathize with me, I have created a simple electromagnetic metal picker- upper (I'm still working on a name; Maybe EMMPU?) Anyway, this device is super simple to build. Also, I am entering the project into the Stick It contest, so if you enjoyed, please vote for me. Let's move on!
Step 1: Gather Materials
Step 2: Wind the Wire
First, wind the wire once around the top of the nail, then hot glue it in place (picture above). Now wind the wire and hot glue the end, as shown in the video.
Step 3: Finishing Up
Now it's time to do the wiring. First, connect a long red wire to one end of the coil, and a long black wire to the other end (picture). Thread the wires through the PVC pipe. Now secure the head of the nail in place with hot glue, as shown above. Now solder the toggle switch to the black wire, and connect another black wire to the toggle. Run the red wire straight through the T. Attach a PVC handle the the top of the T and hot glue the switch to it. Run the remaining black wire through the T (in the picture above, I used electrical tape to braid the wires together). Put the wires in a backpack and connect them to the 12v battery, preferably stored in a backpack.. Voila- your done! Just flip the switch and pick up as much metal as you want. Flip the switch again and drop the metallic payload, just like one of those electromagnetic cranes they use in junkyards.