To count lap, the initial idea was to use something like this Dog Fence with Ardiuno.
I bought the electronic component need to test the approach and made it working with Arduino but could not make it working with the moteino. Probably 3.3V related. I sent a mail to the author who responded that a solution would be to have two loops but I also realised that passing too quicky over the loop will fail the read….dead end for the moment. Turns out that the systems that are actually ont he market use either infrared detection or an directional antenna made out of a wire loop under the ground. My knowledge in the area are quite limited so I will start with a manual lap count : the driver would have to press a button on his remote to report the lap. Not ok for competition but probably ok for personal lap tracking. After all, all I want is to know my own performances.
So, the plan is to connect the moteino on AUX1 (on the receiver) and to detect the signal sent by the remote. Damn I love this oscilloscope… apparently, it is just a matter of how long os the squared high, 3300µs when released, 4400µs when pressed. Houra.. my moteino can do that as well.