手可摘棉花

RP2040 based ohmmeter with audio and ribbon feedback

Overview

Relatively simple, but very interesting design, it reads the resistance with color bars, displays the resistance value, displays the color bar and reads the value through the speaker. The author has made an adjustable resistor LED light that will display a color band for any resistor of the selected series. There's a set of buttons that can be used to switch between different band families, as well as switching the system's audio. When the audio switches, the instantaneous value of the resistance when the button is pressed will be output through the speaker. Finally, there's a visual display that shows the instantaneous resistance over time, the selected band series, and whether audio is toggled.

Blockdiagram

Documentation

Design and production instructions (English)

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Update:2024-11-14 04:24:42

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