It's tax return time in the UK so everyone's rushing to get theirs in by midnight on Sunday. I need a new calculator because mine suffered a catrostrophic failure and not because I'm doing a Bernard Black. Music: http://www.bensound.com/royalty-free-music ... https://www.youtube.com/watch?v=8ycpAXs13Do

A protected 18650 cell is substantially longer than an unprotected cell and will not fit in some devices or chargers. I recently bought 8 18650s which were not advertised as protected so I rather stupidly assumed they were standard 2200 mAh unprotected cells. Rather than pay the postage to return them I thought I'd just remove the short-circuit and under-voltage protection circuit as I didn't need them in the devices and chargers I use since they already had that as well as reverse polarity protection. WARNING! 18650s are very dangerous if handled in the wrong way so DO NOT try this at home. This video is for information only. NEVER open the positive end or any part of the 18650 can as you will expose yourself to some nasties which could ruin your day. ... https://www.youtube.com/watch?v=H75cYVbvRyo

Pard 2 of the repair of this device. Music: Brandenburg Concerto No4-1 BWV1049 - Classical Whimsical by Kevin MacLeod is licensed under a Creative Commons Attribution 4.0 licence. https://creativecommons.org/licenses/by/4.0/ Source: http://incompetech.com/music/royalty-free/index.html?isrc=USUAN1100303 Artist: http://incompetech.com/ ... https://www.youtube.com/watch?v=SSyz3dMSppg

Sometimes things are dirt cheap for a reason... Like this strip of 300 RGB LEDs: The mapping is all wrong. Here's how to fix it! ... https://www.youtube.com/watch?v=BrDm-HgevmA