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...]
What You Can Control with a Smartwatch and ESP32
To build a robust automated home, our smartwatches will certainly act as a good device to trigger intended actions. Presently there are certain areas where various brands are pushing their products. The areas are Smart Lights, Security Cameras, Smart Thermostat, Automobile Automation and Smart Locks. Almost everything in the smart things and IoT stuffs market can be built completely at home. … [Read more...]
Arduino : Independently Blink Multiple LED
A practical question which comes up every day is how to blink two LEDs at different rates? That simply means an independent control on each LED. That small wish is a big jump to visual animation. In real life, the multi-coloured Christmas lights (aka Dewali lights) blinks in that fashion to give us a great feel. Problem to most of the beginners is with the usual "blink" tutorial program … [Read more...]
Pikocube : ESP8285 MCU Powered PCB LED Cube With Gyroscope
Pikocube is a funny, geeky LED cube dice project with 54 LEDs, gyroscope and Wi-Fi-control made by maker Moekoe from Germany. The dice consists of an ESP8285-01F MCU, six PCBs, a 150mAh lithium battery and charging circuit, an ADXL345 gyroscope, and 54 LEDs. Its structural design is quite clever. Of course, the project is open source with all the files available. However, it is not among the … [Read more...]
Temperature Sensor Using NTC Thermistor (Arduino/NTC)
A thermistor (THERMally sensitive resISTOR) is an electrical resistance whose value changes with the temperature. Thermistors are divided into two groups, hot conductors which have a negative temperature coefficient (NTC), conduct electrically in a hot state better than in the cold state and cold conductors, which have a positive temperature coefficient (PTC) and conduct better electrically when … [Read more...]
IoT Based Pulse Oximeter With ESP32, MAX30102 and IBM Watson IoT
Pulse oximeters are in use since long during an operation, in intensive care, in the emergency room and other places such as in unpressurized aircraft. The COVID-19 pandemic made pulse oximetry technology for the consumers. Most of the finger pulse oximeters in the market lack BLE and Wi-Fi. There are only a few finger pulse oximeters which have a BLE to transmit data to the smartphone. Having a … [Read more...]
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