Hacker News new | ask | show | jobs
by noir_lord 4091 days ago
This is an excellent idea, thanks!

Currently off my bike due to ill health but will suggest it to the cycling club.
1 comments
mikeyouse 4090 days ago
No worries! Some people suggest using a stainless metal case around the magnet since they tend to oxidize a bit, but there are a few good guides around with ideas.
link