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Very clever and useful piece of kit.
Great Demo Project. Uses input, output, Serial monitor, timing and if statements.
Excellent project. The idea has many wider applications. For example helping people with limited mobility.Step 6 part 3Have a review of the circuit drawing regarding the relay contacts NO, NC and J1.
A really great re-purpose job. I trained on valve equipment and worked for Marconi as a Marine Radio Officer many years ago. It is quite amazing to see that that Valve (Tube) Look still turns heads. 3Kv on the anodes could really make those beauties glow. The only remaining design mod to add is to simulate the LT lighting up the cathodes nice and slow while bringing on the audio gently. A few simulated crackles and TRF whistles might add interest.
Many thanks for the advise and very clear instructions. I will have to do this fix on my machine.
A very helpful project and an excellent presentation.
A very good example of dealing with pre-defined command words [ swtch and switch].
Well done. A very useful project. I would suggest that a that a schedule be set up to test the system on a regular basis. A practice run should be done by at least two adults in the household. Fuel should be safely stored in approved containers.