:( This is why I keep the buyer up-to-date with details of the transaction. I have 100% positive feedback on there with over 200 transactions and would be quite upset to spoil that with a negative!
A helpful gent from another forum posted this solution using NAND gates;
It works fine with a LED however I'm having much trouble trying to get it to trigger a relay. I think the transistor I'm using doesn't have a high enough HFE. The resistor coil is 250 ohms and AFAIK the max output of...
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