No. Mine doesn't use any relays.Is your above circuit similar to this one??
Wherever is convenient.Where would I add the pot on the stripboard?
AsI said, "This new circuit also includes two diodes which effectively disconnect the pot when neither switch is pressed, to avoid current drain when the circuit is not in use, and so eliminate an 'off' switch."would I still require diodes?
If you omit the diodes the 10k pot will waste about 1mA when the circuit is idle, reducing battery life.