LDR

A photoresistor is a light-controlled variable resistor. The resistance of a photoresistor decreases with increasing incident light intensity; in other words, it exhibits photoconductivity. A photoresistor can be applied in light-sensitive detector circuits, and light-activated and dark-activated switching circuits.

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WiFi NodeMCU ESP8266 Google Clock

“A simple easy WiFi clock using “Google” timestamp, with temperature and humidity. Oct2020 update: bug fixing and automatic brightness I made several clock with arduino but was looking simple, easy, light, synchronized in real time with internet clock different than …

Data Transfer Using LED Light (Li-Fi)

“DIY light based transmission between two Arduinos using LED and LDR with custom communication protocol. I wanted to transfer data between two arduinos wirelessly using an unconventional method. I decided to use a LED as a transmitter and receive the …

7 Segment Clock Version 2

“Hello! After a request from Instructables user regarding availability of 12h format, i took advantage to make substancial changes to the original project. During using of the version 1 i felt the need to make a stand-alone version, so I …

Arduino Theremin

“Arduino Based Theremin with MOZZI Library and LDR in this post, I have set up one of its example setup which is an LDR-based theremin, which basically is a pulse modulation setup that utilizes LDR as a Sensor. to …

Pixie - Let Your Plant Smart

“Pixie was a project developed with the intention of making the plants we have at home more interactive, since for most people one of the challenges of having a plant at home is to know how to take care of …

Musical Treasure Box

“Play a custom tune when your treasure box is opened to warn you someone may be trying to thieve your stuff! I teach coding and electronics at high school and my students often ask how to implement a music box …

LEDura - Analog LED Clock

“After a long time of just making various project I decided to make an instructable myself. For the first one, I will guide you through process of making your own analog clock made with awesome addressable LED ring. The inner …

Science With Rainbows! - Spectrophotometry

“Rainbows, natural phenomena that produce beautiful spectrums of coloured light in the sky, inspire myth and legend and art and give happiness to millions of people. Just as natural rainbows are created by how sunlight plays through water droplets in …

How to Build PHIL - a Light Tracking Robot

“In this Instructable I will be showing you how I made this dual aixs light tracking robot using an Arduino Uno. All the CAD and code will be included so you can build it yourself without needing any programming or …

Small Solar Follower Version 1.0

“Using the TI-RSLK Max, I created a solar follower that avoids shade and follows the sun throughout the day. This small solar follower is the start of multiple iterations of a design I hope to implement before my college …