Build this simple mini- oscilloscope. View up to 40KHz waves from 50mV to 50V pp amplitude. Input gain adjustment from 1 to 100. Auto sweep trigger function to freeze the wave with variable threshold. Y-axis position adjustment. 10x7 led matrix display. 9V battery operation.
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other fun projects:
* make your printed circuit without iron/laminator: /watch/go0_ZwvxIBHx_
* make a 10 year led flasher (on 1 AA cell): /watch/o6n8zVZjaODj8
* make a 512 color (random) led flasher : /watch/Y_KRMH_S_TGSR
Music album: https://spoti.fi/3az5hrf
Mini osciloscopio casero matriz LED 10X7 . operación 9V