The Raspberry Pi Zero is a tiny Linux computer. Ever since they were announced last year for $5, they have been hard to get. But if you are willing to spend about $20, you can get one on Amazon. This Raspberry Pi Zero kit from Argon Forty is $18.50, and it also includes a Mini HDMI to HDMI adapter and a Micro USB OTG to USB Adapter, both of which I needed anyway, so it's a good deal. The Raspberry Pi Zero W is $2 more and comes with onboard Wi-Fi. You will also need a Micro SDHC flash memory card (here's a 16GB one for $7) If you are coming to Maker Faire this year, you can see what I made with it, I'll be presenting at 1pm on Sunday.
