Originally Posted by
bitingduck
That was fast!!
As far as bluetooth-- don't use BLE, it's useful for trackers like tile where you want the battery to last a year, but you don't need that. Crank up the power as much as you can! 100 m range will cover anything on a 250 m track. Doing 200 m times (e.g. with two tapes) in a 333 or larger could be tricky, but if regular bluetooth will cover a longer range you should be ok.
Noted. Thanks!
My buddy John Dowd at DLV created a pretty sophisticated electronic timing system for that track. We even ran cables underground and everything. It's steadily evolving. This may be our winter project.
BTW, In this process I've figured out why there are so many Bluetooth LE combined speed/cadence sensors out there. Speed and Cadence are combined in the
BT Services Spec. Clever, I guess...but that's why.