I know, you can just buy one very cheap from China.. But I think it will give you even more pleasure building your own.. My 3 year old son doesn't let me fly on the simulator anymore so I decided to get another dongle so we can fly, eeerrrr... crash together

But then i did remember i saw this project and decided to give it a go.
it is based on a virtual USB port for AVR microcontrollers. you can find all about it here.. Veeeery nice stuff
http://www.obdev.at/products/vusb/index.html
And below is the link for the PPM to USB project.. There are a couple more projects like this one on the V-USB site.
It uses very few components.. I built it with an atmega 8 but would like to port it to an Attiny 45 or 85 if possible as I feel that using the m8 I'm wasting a lot of pins..
The project runs at 12Mhz
I would like some help if possible to port the FW to the attiny as I don't know much about it.. Don't even know if it is possible..
It would also make the project smaller

so, any help would be appreciated and i thank you in advance for it..
http://thomaspfeifer.net/ppm2usb_adapter_en.htm
Here is a little video I made from it working on the bread board

[BBvideo 425,350]http://www.youtube.com/watch?v=SB-9hS8L ... e=youtu.be[/BBvideo]
João