Earlier this year I built up a Santa Cruz Stigmata gravel bike with SRAM AXS electronic shifting (it’s sweet, will have to do a separate write up).
The eletronic shifters are ANT+ compatible so they can communicate with your bike computer and tell it what gear you are in. This data gets written to your activity recording and then SRAM has a cool webapp where you can review your gear usage post-ride.
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But it’s another place you have to look, and it requires you to send all of your Garmin activities to SRAM.
I decided to whip up a Connect IQ datafield that would provide similar gear usage analytics but let me review the data in Garmin - where I’m already looking after my rides. The usage stats are calculated on device during the ride and then written to the activity recording in developer fit fields.
I was planning on using Garmin’s monetization program to try and sell a premium version, but unfortunately their monetization program is not compatible with cycling computers (the main target device for my datafield) so I used Stripe and built my own licensing system.
Here’s the stack:
- Connect IQ datafield (monkey c)
- Payments & license distribution (stripe + aws lambda + aws ses + aws dynamodb)
- Documentation site (eleventy.js on cloudflare pages)
The app was approved today and should be live soon in the Connect IQ store!