Previously, we published how to interface and run 1602A blue backlight 16x2 LCD and also some projects with that display. Graphical LCD Actually Practical Over 16x2 LCDs. There is 20x4 LCDs as well (which has difference). Here is Graphical LCD (GLCD) Buying Guide For Arduino as There Are Matters to Know Like Controllers. 1602A 16x2 LCD actually easier as it is far more basic electronic component … [Read more...]

There are quite frequently asked questions like - What is Logic Analyzer? What is Use of Logic Analyzer? Is it a necessary equipment for a leaner of electronics? Possibly for answering them, we need to know basic about Logic Analyzer.   What is Logic Analyzer?   A logic analyzer is a testing instrument which captures the data of a digital circuit and displays it for analysis, … [Read more...]

In our previous guide to Create an Arduino LDR Module With Transistor, at the end of the guide we discussed about lighting up LED without microcontroller with minimum modification of that circuit. Not all the readers are enough advanced to modify circuit own self to make the current thing. We Can Use NPN Transistor, Resistors to Turn On LED On Dark Without Need of Arduino Program. That is Great … [Read more...]

In our previously published guides, we listed commonly used transistors with Arduino and How to Turn on LED with LDR. In that turning LED on, we needed no transistor. We Can Create an Arduino LDR Module With Transistor in Easy Way to Print Response as Either Zero or One. We will use a BC 547 as transistor, which is an NPN transistor. After testing this diagram on breadboard, you can make it … [Read more...]

Stepper Motor is Much More Complicated From Buying Point of View Than Servo Motor. If you are new with electronics, we will suggest you to first work with 3V DC Motor, then try Servo Motor and after mastering basic sensors, ICs which are commonly used with Arduino; think for stepper motor. In Other Words, In This Arduino Stepper Motor Buying Guide, We Are Taking it Granted That You Know Needed … [Read more...]

Normally we need to add a 220 Ohm resistor with LED for Arduino dev boards and similar works. Not only making that on breadboard wastes time, but also it takes time to either check the value of resistor manually or using a multimeter. The thing we made looks great and quite useful for day to day electronics development works for simple "plug and plan". We saw the idea somewhere and recreated it to … [Read more...]

This idea is good for automatic turning on and off multiple lights one by one while a person is walking staircase or walking through a passage or hallway. As IR Obstacle Sensors has physical limits, we can not use if the passage is wide like a road - it will fail for physical reasons. Human is not much thick too! In our previous guides - Arduino IR Obstacle Detection Sensor For Dimming LED and … [Read more...]

Why They RX/TX LEDs Blinks Upon Code Uploading? How History of Terminal Relates to it? What Are RX/TX LEDs and Pins on Arduino Boards? History of old Terminal, Telegram and Broadcast engineering. Around 150 years back, we had only way to communicate is sending pulses of current. That was the starting of analog means of connection. Slowly, when telegram improved, terminal devices became faster … [Read more...]

Why we are going towards apparently easy tutorials on Arduino than couple of years back? These basic projects with components are helpful to learn using sensor based logic. Was not LCD with LDR was difficult project? Why Automatic LED Control Using LDR and Arduino looks simillar? Our older guides were mostly just using modules with libraries and this guide has more at the end for creating complex … [Read more...]

You definitely noticed that, for the same sensor, in some project we use Analog pin, but in some other project we use Digital pin. The analog pins on the Arduino can be used as digital outputs. There is another word or phrase - PWM. Pulse Width Modulation (PWM) is a method for getting analog results by digital means, like fading LED. Let us Discuss the Difference Between Analog and Digital Pins in … [Read more...]

It is Very Easy, Cheap and You Need Only One LDR, Resistor and LED. Here is Circuit Diagram and Schematic To Build Automatic LED Control Using LDR and Arduino Project. In previous guides on LDR, we created light measurement instrument and light meter. However, for Arduino Door Bell like project, to add more logic of sensing day and night, we need LDR like basic sensor. This guide is one foundation … [Read more...]