PPM serializer v2

A new version of the serializer is ready.
It features:
* channels from receiver are serialize on one wire
* Compatible with Mikrokopter electronic and more RC receivers
* Neutre stable on all channels
* available in 8 or 12 channels (PPM8 ou PPM12)
* with external crystal for better temperature stability
* all channel entries are protected

You can buy it at the shop www.flash-rc.com in Mikrokopter section.