Sorry, brain fade... Now attached.
Still the same I'm afraid, no difference in the speed readout behaviour...
Nice work, BT HC-05 module ordered. It's great that we can play with these wonderful little gadgets these days for so little cost...I've added the tutorial now
https://opensourceebikefirmware.bitbuck ... ndex6.html
I hope it is detailed enough, as it's just a "quick and dirty" document.