suitable for nimble fingers and and a good work ethic!
Step 1: Internal Organs
1 x Prototype board (cut down to 2cm x 2cm square)
insulated wire ( in exotic colours!)
1 x Ferrite core
1 x 1K resistor
1 x 2N3904 transistor
1 x Superbright LED (blue or white)
1 x single AA battery holder
thin PVC sheeting (for observation box)
Step 2: Make a Heart!
using to contrasting strands of insulated wire, wrap together around the ferrite core. When it's filled up (about 8 turns) twist together two alternate wires from each side.
Step 3: Transplant...
-Add the resistor to the board, soldering one of it's leads to one of the single leads coming off the core.
-Insert the transistor into the board. Attach the other resistor lead to the middle transistor lead.
-insert the LED through the middle of the core and through the prototype board.
-With the positive (longer lead) side of the LED on the right facing the flat side of the transistor, solder the outside transistor leads to the LED leads.
-Solder the remaining single wire coming off the core to the positive LED lead.
-Solder the negative battery holder wire to the negative LED (flat side) lead.
-Solder the positive battery wire to the double wire off the core.
Step 4: Contain Your Organism!
-Make up a net: this one was length: 60mm x height: 30mm x width: 35 mm
A bit bigger than a match box.
-Use a scalpel to cut out of PVC and lightly score the fold lines.