You can buy all kinds of conventional clocks that have hands and numbers for easy reading. Or, like [Fabio Ricci], you could build yourself something a little more esoteric, like this neat shadow ...
Hackers have been building their own basic oscilloscopes out of inexpensive MCUs and cheap LCD screens for some years now, ...
Some results have been hidden because they may be inaccessible to you
Show inaccessible results