data geekery and tuning

I finally finished my data acquisition for the bike. I used an Arduino with an SD Shield to capture the TTL serial data as output by the Cycle Analyst.

Arduino with SD Shield taped to back of bike.

I actually took the bike out to run some errands. One of the annoying things is that I’m using the current and speed control on the Cycle Analyst. It uses a PID loop to do this, and the defaults are tuned for a bike with less power than mine. That means it oscillates. If you look at the image below, this represents me running on flat ground with the throttle wide open. You’ll see the PID loop cranking the amps up and down and the speed oscillating about 3mph. I’m trying out Tableau so you should be able to play with the data.

Full run coming back from Bartells :

Sheet 1
Sheet 1

Leave a Comment

Please log in using one of these methods to post your comment:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out /  Change )

Google photo

You are commenting using your Google account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

Connecting to %s