The WS2811, WS2812, WS2812B, WS2813, and SK6812x are known as NeoPixel or Pixel. They are RGB LEDs with a controller. Particularly WS2811 RGB LED strings are commonly sold in India during Diwali and in North America during Halloween, Christmas etc. Bhoot Chaturdashi in India and Halloween in North America are equivalent. Indian wedding typically involves a lot of lighting. These occasions … [Read more...]
What is Over-the-Air Programming (OTA Programming)?
An Over-the-Air Programming (OTA Programming) is a software update that is performed via a radio interface (typically Wi-Fi or cellular network). Over-the-air updates are mainly used on smartphones and similar mobile devices and use the devices' existing Internet connection. Delta encoding is sometimes used to drastically reduce the amount of data to be transferred. Firmware Over-the-Air (FOTA) … [Read more...]
ESP32 Arduino : Control LED with a GUI Toggle Button
Designing two buttons with separate ON/OFF functions is easy and usually, we can avoid async server or dynamic programming language. When we need a checkbox, we can use Javascript on the server side. iOS style toggle button is essentially a checkbox (or a radio button or it can be anything similar). Fundamentally toggle button is a "cheating"! You can create a toggle switch just with CSS 3. It is … [Read more...]
The Reasons Why Ham Radio is Dying
Dying means not growing at a higher rate. Dying does not always mean declining. We can still use ham radios during emergencies when smartphones may not be usable. Amateur radio is a popular hobby that combines many different aspects but this hobby is suffering a worldwide decline. Many amateur radio enthusiasts wonder why the hobby of amateur radio is dying. This article will provide some … [Read more...]
What to Look For When Buying a 4K Laser Projector
A home theatre experience should be easy to set up and use. Since there are many projectors to buy, you need to think of the price and features. If you don't care about cost, but do want plenty of features then one option is perfect for you. Another great choice if the price isn't a problem is to go with one of the other great options. The cost of 85-inch and 98-inch television is huge and … [Read more...]
What are the Best Arduino Projects for Beginners?
Arduino is a platform which combines open-source software and hardware. Apart from the official Arduino, there are Arduino-compatible boards (such as ESP32) which can use the Arduino IDE to let you upload the program. The best projects for Arduino for beginners are limited to the basic projects which help the creators to understand the theory of electronics. On this website, we have over 200 … [Read more...]
Ways to Convert Any Light Switch Into A Smart Switch
Again, we are talking about the regular rocker/piano switches which are commonly used everywhere. Previously we published an important article - How to Interface a Piano/Rocker Switch (SPST) With ESP32 Arduino. These days, concealed conduit wiring with modular components are standard. There has been standardisation across the globe for compatibility. I have written before that these came into … [Read more...]
Is It Feasible to Build an LCD Projector at Home?
The working principle of an LCD projector is just like the vintage toy projectors. In the case of a vintage toy projector, there is a light source (that used to be a vintage incandescent bulb) behind and a focusing lens in front. The slide/film was inserted in a slot in between these two elements. These projectors were great in the era when the chance of custom recording was limited to still … [Read more...]
What to Know About FPGA in Electronic Design Service
Before the development of CAD, electronic circuits were designed and manufactured by hand. Some advanced stores used geometric software to create the tracks with the Gerber photoplotter. The process was essentially graphic, with a transition from the electronic diagram to a layer for the UV insolation machine. The development of FPGA circuits is often referred to as programming. In this context, … [Read more...]
ESP32 ESP Rainmaker Cloud for Arduino
Espressif is a company that has revolutionized the low-cost WiFi, BLE development. With classic ESP32 WROOM module, we have shown Controlling AC Powered Appliances With ESP32 and IBM Watson IoT with zero monthly cost. But the coding part with IBM Watson IoT was not easy. Although, we have pointed out how to use Android Apps to Control Devices Connected to IBM Watson IoT, essentially it was not … [Read more...]
How to Replace delay() with millis() : Arduino Programming
In many of the sketches shared by us have the millis() instead of delay(). Not always it is possible to explain a function within a guide on how to do a thing. In this article, we will explain about millis() and provide some easy examples so that you can reproduce yourself. It is normal that the Arduino users initially use the delay() function. The main reason is the blink example is the thing … [Read more...]
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