JT 7 Year Update

I built this blinking joule thief circuit over 7 years ago and it has been blinking away ever since. When I built this device the battery voltage started out at 1.600 Volts and now, 7 years later, it has dropped to 1.302 V. I will continue to do updates on this project as time goes on.

Playlist of all the videos I have made on this project:
https://youtube.com/playlist?list=PLKs13xje3QqQ3mAky3L_tBSOzCBfG2mcb

Video I got the idea from originally:
https://www.youtube.com/watch?v=-l7L_u45edE

Видео JT 7 Year Update канала Eman2000