I don’t know why I hadn’t seen or thought of this before 
Testing a fuse using your smartphone:
Has anyone else got any clever tricks like that?
5 Likes
Neat! But it only works if you hold the end of the fuse flat on the screen. If you hold it at an angle so you only have the edge of the fuse end cap touching the screen you don’t get sufficient capacitive coupling. Hence you can’t use a screwdriver as a smartscreen stylus - the tip is too small.
A compensation of wearing hearing aids is that if you put them on the Telecoil setting you can hold a hard disk up to your ear and very clearly hear it spin up (if it’s going to) and twitching the heads. (Sometimes when I come into London on Thameslink, if I’m sitting in a power carriage with my hearing aids on T I can hear all sorts of whirring and singing noises from the power electrics, and likewise if another train passes on an adjacent track.)
5 Likes