A smart helmet which can track the user location and detect a fall using a MPU6050 IMU based fall detector
When technology drives change on its own, things tend to improve. When social or political events force tech changes, the results are more random. Is it just us, or does Mastodon give you some nostalgic warmth of the BBS world, but with better graphics?
A wide range RF detector 50-3000Mhz with battery charger, ATtiny micro controller and SMD. This can be used as a linear instrument monitor or as a threshold/comparator alarm.