Ronan,
To answer your question,
"Isn't the schematic in post 1 the schematic for the vero layout, except for the IC pin numbers?"
Yes it is. I've looked at this a few times trying to help but it's a bit more work when the schematic has the values listed, the layout has the component designations listed, and the schematic and the layout do not match due to the retrofit of a quad op amp from two dual op amps.
Fair enough, I'm having the same problem. Can't relate the vero to the schem since there are no values for the vero. It then becomes a crossword puzzle that I don't need. Just wanted to confirm that was the correct schematic.
Next question is, Marcus, how did you know what value components to fit to the vero, since the values are not listed, or am I missing something?
If the LED is on all the time, with or without input signal, then the output is high (pin 7 of the LM358 in the schematic). The output state depends on the difference in voltages at pin 5 and pin 6. The voltage at pin 6 is controlled by the transistor, when the transistor is off, pin 6 should be close to 9V, and pin 7 should be low, turning the LED off. That is, with no input signal, pin 6 should be close to 9V, and pin 5 should be around 3V.