‘Touch’ to change the signal and start the train - as the train passes the signal let go and it will revert to “red” with the train still moving. Lots going on in this one but here are the links…
9v (and other voltage) relays… https://a.co/d/dtZkxqu
Three aspect signals… https://a.co/d/cUv1Zx0
The “other” three aspect signals… https://a.co/d/5KAoFca
Transistors (you likely don’t need 200!) … https://a.co/d/0nqLs8e
Resistors - well I had those on hand but you’ll need something like this … https://a.co/d/d0PVHof
Diode 1N4001 (these are useful across the relay) https://a.co/d/6hRArd4
All in all you’ll probably end up paying less than a couple of cups of coffee… speaking of which, I don’t mind if I do 😜 milk no sugar please … https://ko-fi.com/trainsofthought
See you soon.
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