It is an upgrade to our previous article to control ESP32 Arduino LED from IBM Watson IoT. We already talked about Android Apps for Watson IoT for this purpose. We already have an article to use relay with Arduino. Our linked relay guide should be enough for anyone to understand how to use relay and AC connections. These relay modules will create mechanical clicking sound like switch. My relay … [Read more...]
Control ESP32 Arduino LED from IBM Watson IoT
Anthony Elder published a guide on developerWorks Recipes on how to "Build your own Watson controlled kettle" for ESP8266. This article's code is shamelessly ripped-off from him for broader usage. This guide will show how to turn on and turn off a LED connected with ESP32 Arduino from IBM Watson IoT platform. That "remote control" over the internet will be shown by using a simple bash scripts - … [Read more...]
ESP32 Arduino : Fetching Current Weather Data (No JSON Parsing)
ESP32 Arduino means, an ESP32 dev board (which costs $8) and Arduino IDE configured for ESP32 in the way we described in an earlier guides. Our examples with IBM Watson IoT not fully easy guides for the newbie. This guide on Internet of Things (IoT) is relatively easier than them. To follow this guide, you need to sign-up for free account on OpenWeatherMap … [Read more...]
Guide to Run Air Conditioner Economically and Safely
Improper setup of air conditioner either can lead to reduced life of the machine or reduced life of the owner. Although the former fate is more common, later fate not just rare across the globe. Manufacturers of air conditioner like heavy duty electrical system will assume that the owners are knowledgeable enough to arrange technicians for correct electrical setup and heat insulation. An air … [Read more...]
Technically Best Smartphones for Text and Video Chat
Text and video chat have become important ways of communicating via smartphone. Even just a few years ago, not even 50% of smartphone users used mobile applications for video calls on a regular basis. Unfortunately, till today commonly the smartphones are not judged for their ergonomics and features for text chat and video chat. The differences between various smartphones not only limited to the … [Read more...]
ESP32 Deep Sleep : Push Button Message to IBM Watson IoT
We already demonstrated how to send message to IBM Watson IoT platform using ESP32 Arduino with just a button press. We have several non-IoT guides on pushbutton with Arduino including simple basic Arduino Blink LED With Pushbutton. Learning various logics with pushbutton will hugely help the beginners as pushbutton from the binary way of thought is a basic sensor to convey 0 or 1. Working with … [Read more...]
M5Stack (ESP32 Arduino) : Modular, Stackable, Wearable IoT Platform
The M5Stack is ESP32 Arduino by heart. It is a modular, stackable, wearable IoT platform for development which is obviously Open Source. There are many stackable ESP32 or other 32 bit Arduino compatible prototyping boards. The big difference of M5Stack with them is that it has an enclosure, display, pushbuttons, microSD card slot, USB-C, loudspeaker, and extension connectors. Official website … [Read more...]
ESP32 With DHT11 Deep Sleep : Part 1
Here is part of ESP32 with DHT11 deep sleep guide explaining the basic behind code. Our DOIT ESP32 board (which we commonly use in examples on this website), not energy efficient for deep sleep. However, it works. We already can connect normal Arduino UNO with DHT 11, with ESP32 Arduino and also we can use the setup to send data to IBM Watson IoT. ESP32 offers us deep sleep mode for power … [Read more...]
What is Infrasound? How Human Reacts to Sub 20Hz Infrasound?
Sub 20Hz sounds are infrasound and commonly we need special electrical system to pick up the sounds of that range. Infrasounds are low frequency sound waves. They are both mechanical vibrations and acoustic oscillations. They are usually below the threshold of sounds perceptible to the human ear (between 0 Hz and 16 to 20 Hz approximately) At lower frequencies, for physiological reasons, they are … [Read more...]
Scope of ESP32 in Commercial IoT Products
Can ESP32 used in Commercial IoT products? Yes, ESP32 has modules and SoC to fit your production need. However, Arduino IDE is not for production. The reason we switched our projects from genuine Arduino to ESP32 Arduino is to broaden the scope. Our IoT guides are around IBM for highest compatibility. Node-red is the most popular IoT control software, which is very easy to use and many tutorials. … [Read more...]
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