What should i check while buying a second hand arduino?
i found a second hand arduino on a website.the seller is saying that it is a handmade arduino.but how?i think all arduinos are made in arduino factory.isn't it?
it's not looking like other arduinos that i saw before on internet
it's a "ARDUINO ATMEL ATMEGA 168 CHIP". isn't it?
im waiting for your advices
sorry for my english