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100 LED Chaser Circuit Using IC555 and CD4017

A Chaser Circuit consists of a clocked IC or other electronic unit like an Arduino that drives an array of LEDs in such a way that individual LEDs (or small groups of LEDs) turn on and off in a predetermined and repeating sequence producing a visually attractive pattern.

In this tutorial I am going to create a chaser circuit that can drive 20 or more LEDs using 555 timer IC and CD4017 decade counter. Watch this video for detailed step by step instructions on how to build this circuit and for a complete instruction on how the circuit works.

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ESP Terminal with 3.5" SPI Capacitive Touch Display

Product Info: https://www.elecrow.com/wiki/esp-terminal-with-35inch-spi-capacitive-touch-display.html Elecrow sent me this cute little 320x480 ESP32-S3 based SPI capacitive touch display with OV2640 camera. I am going to use this screen to create a touch panel for my home automation system. In this video, I am going to unbox and show you guys how to program and use this cute little touchscreen from Elecrow using SqareLine Studio. You can order this touch screen display from www.elecrow.com. The product link is in the description below.

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DIY - Planter Box Using Reclaimed Wood

Hi There, I am back again with another simple DIY project. This one, will only cost your time and energy to produce an amazing Planter Box from reclaimed pallet woods.

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OLED I2C Display Arduino/NodeMCU Tutorial

The very first program you write when you start learning a new programming language is : "Hello World!". The program itself does nothing more than printing a “Hello World” text on the screen. So, how do we get our Arduino to display the "Hello World!"? In this video I will be showing you how to get started with the small 0.91 (128x32) and 0.96 (128x64) I2C OLED displays. There are 100s of tutorials on the web explaining the same thing in different ways, but I couldn't find one that tells me all about the OLED display and how to use it in different scenarios. It took me some time to work it all out. So, I thought I should create a tutorial on what I have learned and combine all the features and ways the OLED displays can be used in our projects.

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Hi there, I am back again with another simple DIY project. This one cost me absolutely nothing. In this project, I am going to make a "Modern House Number Plaque" using all scrap materials from my backyard.

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DIY - Automatic Garage Light

Has this ever happened to you? You come back from a romantic dinner date and when you open the shutter door of your garage you realize that you left the garage light ON. You spent few hours outside with your partner to impress her and all the time this light bulb was on. You immediately turn around and look at her face to see a silent anger on her face. Alright, enough of that. So, in this tutorial I am going to turn on and off the garage light using a PIR sensor. When the sensor detects a moving object, it turns on the light bulb and when the moving object is gone, it turns it off. Lastly, I am going to make sure that light bulb only turn on during the night time (when its dark).

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PIR Sensor Tutorial

Just before creating my next projects tutorial, which will be using a PIR sensor, I thought I might create a separate tutorial explaining the working of a PIR sensor. By doing that I will be able to keep my other tutorial short and to the point. So, without wasting time let’s discuss what is a PIR sensor and how we can use it in our project.

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Hello everyone, welcome back to my channel. This is my 4th tutorial on how to drive a RELAY (not a relay module) with an Arduino.

There are hundreds of tutorial available on how to use a "relay module" but I could not find a good one that shows how to use a Relay and not a Relay module. So, here we are to discuss how a relay works and how we can hook it up to an Arduino.

Note: If you do any work with "mains power" such as 120v or 240v AC power wiring, you should always use proper equipments and safety gears and determine whether you have adequate skill and experience or consult a Licensed Electrician. This projects is not intended for use by children.

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Hi Friends,I am back again with another Arduino based home automation project. This time I am trying to make my partner's life easy by installing a collision avoidance system in the garage to help her park the car safely without hitting the garage wall.

So, in this video, I am going to use an ultrasonic sensor to calculate the car's distance from the garage wall and display it using green, yellow and red LEDs. The color of LEDs indicates whether to keep moving, slow down, stop or go back.

The total cost of the project is around $20 - $25.

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Hi Everyone, I am back again with this new tutorial.

In this tutorial I am going to show you how to charge a Lithium 18650 Cell using TP4056 chip utilizing the solar energy or simply the SUN.

Wouldn’t it be really cool if you can charge your mobile phones battery using the sun instead of a USB charger. You can also use this project as a DIY portable power bank.

The total cost of this project excluding the battery is just under $5. The battery will addup another $4 to $5 bucks. So the total cost of the project is some what around $10. All components are available on my website for sale for really good price, the link is in the description below.

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Hi Everyone, This is my 1st Arduino's tutorial video. In this video i am going to show you how to use a LDR or Light Dependent resistor to turn on and off another circuit or a LED.

Wouldn’t it be really cool if whenever a room gets dark, a light bulb automatically turns ON and eliminates the darkness? In this very simple project, I am focusing on eliminating darkness. You can even use this as an emergency lighting system.