Content for Photodiode

Web-based universal remote under $4, probably

“Don’t buy a universal remote, make one. It’s cheaper, funner, universal-er, kind of, and you get to learn the ESP8266, kind of. If you have a hungry toddler like I do, you might also be missing some of …

WALTER - The Arduino Insect Robot

“I really like the popular set-up of 2 servos arduino insects on youtube. When I looked at it, I always remember what BEAM robotic guys did long before that set-up became favorite. These people who are analog robot fanatics did …

Simple Infrared LED and Photodiode tester

“This is a simple Infrared LED and Photodiode tester using Arduino-compatible microcontroller. Purpose: I received a new batch of IR LEDs and IR photodiodes. I need to test them before signing them off. I have limited tools at home. So …

Line Follower Bot

“A line follower robot is the one which follows a dark line drawn on a light colored (white) background.The working is explained with three sections, one is the input section where the lines are detected, the second one is …

Analyze Any IR Protocol With Just You Arduino Board

“Recently, I was in deep research on how to make our own “Self Learning Universal Remote”. So when I searched for the procedure of making this, first step I found is analyzing IR protocol,its frequency (time period),and also …

Lux Meter Module

“LUX Meter project has been design to measure the illumination. Illumination is luminous flux falling on surface area of photo diode. This illumination converted to corresponding voltage using Op-Amp circuit.”

Obstacle detector using Infrared

Today we will build a circuit that detects the interruption of an infrared beam allowing an alarm to be created. The LM358 IC has two comparators. Pin 3 which is the non-inverted end of the voltage comparator is connected to …

LED detects light

Today we will build a circuit that uses an LED in a curious way - to detect brightness. We all know that LEDs have a certain color but some of these LEDs can also detect light. Obviously they do not have …

Bike Generator Charging Station

“Want to workout but your phone’s dead? With a stationary bike generator, that doesn’t have to be a problem. You can hop on your bike and watch your calories burn as you provide the energy to recharge your …