- Raspberry Pi model B - Ethernet is required
 - Ethernet cable
 - WiFi adapter - Not all WiFi adapters work, we know for sure it works with the ones in the Adafruit shop!
 - SD Card (4GB or greater) with Raspbian on it. You can either copy the Raspbian image onto it or buy a ready-made Raspbian card
 - Power supply for your Pi & a Micro USB cable
 - USB Console cable (optional) - this makes it a little easier to debug the system
 - Case for your Pi (optional)
 - A SD or MicroSD card reader (optional)
 
http://learn.adafruit.com/onion-pi?view=all
or skip some steps and buy a plug and play Onion Pi:
https://www.adafruit.com/products/1406

Nice information is being depicted in this website.
SvarSletromsemulator 2018