Discuss My day 3: build a gsm monitor/alarm for a pump house in the Talk Electrician area at ElectriciansForums.net
Could you not clamp a big heat sink across the relaysSeems to be working ok, as in texting and calling.
View attachment 117772
The mains relay's I have used are getting too hot, seems that the led resistor is of the wrong value so are dissipating too much heat.
Have started to do it another way for the mains monitoring.
View attachment 117774
Maybe too late now, but didn't one of the forum sponsors 'RF Solutions' have something 'off the shelf' that would do, rather than have to build one yourself?Seems to be working ok, as in texting and calling.
Not for a total build of less than £100Maybe too late now, but didn't one of the forum sponsors 'RF Solutions' have something 'off the shelf' that would do, rather than have to build one yourself?
The mains relays were just what i had, turns out they were Chinese copies.
ah well no, maybe (definitely) not!Not for a total build of less than £100
Reply to My day 3: build a gsm monitor/alarm for a pump house in the Talk Electrician area at ElectriciansForums.net
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