So, as you can see, I'm almost finishing the Divergence Meter. Yay!
In the bottom, you can see the central board, the last step I've done. The eraser, at the left, is only to hold the boards in place XD.
At the back side, you can see two buttons at the right, that are "mode" and "set". See the video to see how it works. At the left, a on/off switch, and a power connector.
Initially, the divergence meter is powered by a +5V power adapter. A cell phone charger can do it, although it can heat since my device drains ~700mA - ordinary chargers can provide only ~500mA (electronics stuff, nevermind). Then, as I had finished the central board, I r