Here is another tiny project for my need of a small usb to serial device for easy programming and debugging of arduino. The device is built around the FTDI FT230X chip. It needs only a few passive extra components to work. I also added a PTC fuse to protect the usb port. I am currently using it on my Mini Transmitter project and also with the NanoFlyer mini quadcopter. It makes firmware update and serial debugging very easy and does not take much space on my already cluttered limited desk space.
The board has the option to select 3.3v or 5.0v output on VCC pin via jumpers.
Here are few photos:
Connected to NanoFlyer:
Connected to MiniTX: