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TUTORIAL
91

Adjustable Frequency Timer: Learning Engineering Nuances

By Kaleb Kohlhase

The goal of the project is to make an adjustable frequency circuit that could turn an LED on and off with a 555 timer so that it blinks at different rates.

PROJECT
1,227

Design a Luxmeter with an LDR and an Arduino

By All About Circuits

For this project, we’ll characterize an LDR, write software to calculate illuminance, and build an Arduino and LDR based luxmeter.

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