Need advice

Projects General Guidance
1

I just need to amplify signal from Arduino to play tone on car horn speaker, which is 12V 3.60A. (look at attachment, piezo speaker should be replaced with big car horn)

Its not one tone, its a melody, thats why i need Arduino to play it... Cant find appropriate schematics online since i dont know how to search for it :frowning: Would simple audio amplifier do the job? I have p3nc60fp mosfet in my inventory, and a lot of NPN transistors. im afraid to do this alone i dont want to blow up my Arduino. Thanks

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2

best advice:

please read ' how to use this forum'
it helps you to know the basics. like how to use a subject line that makes sense and has people know what you want.
the one you have cannot be of any use in a search.

3

(look at attachment, piezo speaker should be replaced with big car horn)

Without even looking, I expect this is a F**ing diagram. Why draw the diagram if it shows something you don't have and don't want?

4

Feed the output from the arduino into an audio amplifier then the horn. Measure the output from the amplifier to make sure its within the 12 volts.