* Gigabyte Micro ATX motherboard with Atom dual core 1.8ghz ($120)
* 4GB ram ($110 but you should only need 2gb so about $55)
* 500GB Seagate 2.5" HDD ($75)
* M2 power supply ($45)
* Micro ATX case ($50)
* Lilliput 7" 669 GL HDMI ultra bright 450cd/㎡ touch screen ($225)
* USB WIFI ($25)
* GPS receiver ($40)
* 4 port USB hub (powered) ($20)
* Tactrix 2.0 cable ($150 2nd hand, you can get away with the one that does data logging only which is cheaper)
It all depends how many gadgets you want with it, there's almost endless options lol
Software is free if you know where to look for it



