Hi
I found your forum after searching on Google, but haven't found any threads on what I'm after.
I basically need to trigger a relay to switch over between 3 and 15 minutes, possibly 3,4,5,8,12,15 minutes, but variable is fine if I can calibrate it with a watch. It doesn't have to be down to the second.
I know which is the hot end of a soldering iron, but apart from assembly my electronics theory is pretty poor.
It was suggested to try a 555 circuit but with a huge capacitor, although this would mean swapping components to change the interval.
Would it be quite easy to get a battery powered circuit with relay to fit in a project box?
thanks for any advice or places to search / buy
I found your forum after searching on Google, but haven't found any threads on what I'm after.
I basically need to trigger a relay to switch over between 3 and 15 minutes, possibly 3,4,5,8,12,15 minutes, but variable is fine if I can calibrate it with a watch. It doesn't have to be down to the second.
I know which is the hot end of a soldering iron, but apart from assembly my electronics theory is pretty poor.
It was suggested to try a 555 circuit but with a huge capacitor, although this would mean swapping components to change the interval.
Would it be quite easy to get a battery powered circuit with relay to fit in a project box?
thanks for any advice or places to search / buy