This circuit will emit an intermittent beep (or will flash a LED) when the water contained into a...
The result was a project that includes a waveform capture circuit, a graphic LCD (Liquid Crystal...
The right way to do this is with a small extra pc board to accommodate the new components, firmly...
A 12V supply is connected to the 12V positive wire, the current flows through a protection diode...
Since portable PCs are today common and a USB linkis a better solution here we present an...
I currently have three: a really old optoelectronics Opto-7000 which I don`t use much, a newer...