26 October 2018

Industria Macchine Elettroniche IME-141 - eeeeeerror

I let my daughter play with IME-141 calculator. Since a calculator is boring if you don't have maths to do, she pressed few buttons at the same time and this is the result:

It never occurred to me I could to that "test". Now I try it on every calculator just for the fun of it.

And for the curious, a close-up of display VFD tubes. I really like the shape of segments. The vertical filament is visible too.

06 October 2018

FM radio for the bathroom - followup

This is a follow-up to my previous post about an FM radio for the bathroom morning routine.

The good old Samsung Galaxy S (i9000) does a wonderful job. Its stand-by time is more than a week even if we leave the GSM_RF part powered all the time (otherwise we would need to switch it on every time we need the FM radio). The loudspeaker volume and quality are very pleasant.

I even found a smaller 3.5mm jack to sacrifice and now it looks even better without effect on the received signal.

Long live radio!

Case closed :)