I have just assembled this and the 12C508A chip seems to have all the correct voltages and recieves up to a 4.7v signal from the clap detection circuit. Hoever it does not show any output on pin 7. After a random interval of around 30 seconds pin 7 goes high and the relay switches on but it waits a similar random time before going off. Is the IC faulty or incorrectly programmed ?
Thanks for that offer.
It seems to have started working more predictably now. Although on powering up there is a delay before the relay will trigger of about 30 seconds. Perhaps I was just being too impatient !
I’m new to mini kits - just doing MK138 & 139 . Where are you supposed to get dedicated PSUs (i.e. mains adapter)for the ones that need them instead of batteries?
And with the right size DC jack plug (plug spec/dimensions are not mentioned in the instructions)