Beeping at 200m
Topic: Beeping at 200m
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Old And In The Way
I learn a bit every time I visit the forum.
Re: Beeping at 200m
Mar 30, 2013, 07:51 am
You could use a -very- small capacitor to change square wave edges to sawtooth.
Just how small though, I am not the person to say.
Cheap 200x audio amp (they have a 20x too) that uses an LM386 chip:
I haven't tested one yet, just got 2 of each.
Nick Gammon on multitasking Arduinos: