# Can I use a serial module with a barebones Arduino?

I have recently bought a couple Bluetooth modules that connect to the Arduino via TTL/USB/UART (you use Serial(); to communicate with it).

I don't know if the UART chips are in the chip or if it is in another part.

Since I only connect it to pins 0 and 1, do I need a TTL to USB converter for a setup like this?

I am following this guide: http://arduino.cc/blog/2010/06/08/minimalist-arduino/

• It's a bit unclear what you are asking here :/ Could you elaborate? – Manishearth Apr 10 '13 at 1:02