also:


the echo back seems to be delayed by 1 transmission.

ie i send 12 and nothing is echoed back
then i send 16 and 12 is echoed back
then i send 58 and 16 is echoed back

etc...

what would be the cause of this?

I have added LEDs to indicate the recieved number and they are changing straight away. Only the echo is delayed.

Thanks