how to make a probe??
i m not understanding the way they have explained!
<a href="https://www.redcircuits.com/Page68.htm" target="_blank" rel="nofollow noopener noreferrer">Salt-Taster - RED - Page68</a>
the circuit 'Salt Tester' contains probes! but how to make it is pretty vague๐ , can anyone read it, understand it and then make me understand too??