January Swag Bag: DE0-Nano

I was a lucky entrant in Digiwish 2012, winning a DE0-Nano FPGA development board. Thanks Digikey for making my Christmas wish come true!


£1 Lithium Ion Battery Charger

One cheap PCB from an auction site. 1 scrap bit of copper pipe. 2 bronze pennies. Put them together and charge up a 18650 Li ion cell.


3x Battery Teardown

So if you open up a 9 V battery, you find 6 thin 1.5 V cells inside. But what was inside that lantern battery, the rechargeable PP3, or the funny shaped lump on the back of my laptop? Confronted with dead metal in the recycling drawer, I tried to find uses for the contents.

 ? ??