Hardware

Detailed article on computer hardware parts like RAM, Motherboard, Processor, Graphics card. Hardware also covers topics on hardware of Server, Single Board Computers like Raspberry Pi to Libre Hardware Projects.

How to Make a Non-Contact Voltage Tester

Non-contact voltage contact testers are difficult to classify as a tester because they are not subject to a special standard. Non-contact phase testers use a sensor to detect the electric field strength in the immediate vicinity of the conductor and visually signal via a display. A battery is required for operation. Depending on the sensitivity, the existence of voltage can also be determined even … [Read more...]

How to Make a Good Electrical Earthing (Grounding)

The ground is an electrical conductor which is used to carry fault currents, signals, and radio waves. An earthing involves an uninsulated electrically conductive element of a grounding system which is located as a line-shaped electrical contact surface below the earth's surface. The earth should have a good electrical connection to the ground to divert electrical currents there. The … [Read more...]

Guide to Solar System for Beginners

Worldwide a lot of peoples want to harvest electricity from the sun. Having it is like having a well, tube well or a borewell at home. Grid electricity is great to run the appliances of higher wattage but the appliances like the LED lamps can easily run from your system. The purpose of this article is to enlighten you about the different components of a solar system and help you to purchase the … [Read more...]

How To Set Up an Electronics Lab at Home

It is a common question for a hobbyist to ask a list of tools and components to set up an electronics lab. As most of the peoples have a limited budget, set the initial focus on the civil, architectural and electrical part. The selected room must be spacious (of around 150 to 200 square feet), preferably have 12 feet ceiling height. There should be plenty of natural light. Like any lab, there must … [Read more...]

How to Build a DIY Water Level Indicator?

Water level indicator can be of various complexity levels of different cost. A water level indicator is very much helpful at least in North America and India. Peoples in both of these countries outside the major cities need to pump a natural source of water into a reservoir and then pump to the overhead tank. The Source of natural water can be rainwater, a borewell or a tubewell. This kind of … [Read more...]

What is the Maximum Cable Length Between Arduino/ESP32 and a Sensor

After reading our guide on How to Interface a Piano/Rocker Switch (SPST) With ESP32 Arduino, one reader has asked whether it is possible to keep all his ESP32 with relays and indicators at one room and connect the switches, sensors of the whole house via cables. That is possible to deploy but various hardware components will be required. Also, coding may need some change. I believe that so huge … [Read more...]

How to Interface a Piano/Rocker Switch (SPST) With ESP32 Arduino

We are talking about the regular white colour rocker switches which are commonly used across the globe. They came into the market in the 70s replacing the tumbler switches made up of Bakelite and China clay. They are SPST switches ( read our old article Type of switches to know more). They have different names such as piano switch, rocker switch, decorator rocker switch etc. As because before … [Read more...]

ESPHome VS. Tasmota : When to Use Which and Why

Both Tasmota and ESPHome are nice "platforms" for building a smart home. We have already discussed the getting started part with Tasmota and ESP32. Depending on the use-case, ESPHome may be a better choice. In this article, we will discuss the practical things about ESPHome and Tasmota taking it granted that you are using an ESP32 development board. Why ESP32 over … [Read more...]

How to Work With Tasmota on ESP32

Tasmota is an Open-Source firmware for ESP devices developed by Theo Arends (from the Netherlands). He is also the webmaster of a technology blog with nice tutorials. Tasmota is not written in "Arduino language", however, you will not need to code with Tasmota. It is mostly about uploading the code, hardly changing 1-2 lines for a custom configuration. Your hard work will give you a … [Read more...]

Which IoT Platform is Best for ESP32 Arduino?

There is no single best answer to the question when we want to find the best IoT Platform for ESP32 Arduino. I believe that many of the newbies are not sure why some makers talk about ESP32 Arduino and some talks about Raspberry Pi. ESP32 Arduino and some MQTT service or IoT platform is the easiest way to convert traditional electrical things to smart devices. This is a common need. 90% of our … [Read more...]

Basic Smart Doorbell With IBM Watson IoT and ESP32 Arduino

Before the lockdown, I was building a basic smart doorbell with ESP32 and IBM Watson IoT. The function is easy and practical. We are adding a circuit with ESP32 to an existing battery-operated doorbell. When a person will press the doorbell, you will receive a push notification on your mobile phone. (Long back) I created a video of the basic prototype and uploaded it to YouTube and completely … [Read more...]