johnsonap Karma 243 Created 11 years ago Recent Submissions 1. ▲ TP–7 Field Recorder (teenage.engineering) 171 points · 2 years ago · 193 comments 2. ▲ DIY Onewheel – open-source self balancing skateboard (bytesizedengineering.com) 193 points · 3 years ago · 101 comments All submissions on HN · View profile on HN