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Overview As you might know, the ESP32 board is very popular today because of the amazing capabilities it offers. The fact that you can add features such as Bluetooth and Wi-Fi to projects makes this board a great option for a wide variety of Internet of Things (IoT) projects. But as economists say, "There is no free lunch!" This means that every benefit comes with a cost. These attractive features of ESP32 also come at a cost, which is its high power consumption. The designers of ESP32 have also come up...

Introduction Thermometers and temperature sensors are widely used in many sectors. With advancements in science and technology, different methods and sensors have been developed to measure temperature. These sensors are used in various areas, including industry, homes, labs, and more. Many of these sensors and modules are designed for easy integration with microcontrollers and microprocessor systems. For example, these sensors are designed to work with microcontrollers like Arduino, considering factors such...

Introduction The KY-028 module contains a thermistor sensor that measures the ambient temperature. The resistance of the thermistor varies inversely with temperature. In addition, the analog and digital output pins provide the sensor's data. When the value measured by the sensor exceeds the threshold, the digital pin goes HIGH, lighting up the LED on the module. Tip You can adjust the digital output threshold using the blue potentiometer on the module. KY-028 Pi...

Introduction Have you ever had difficulties while uploading code to an ESP32 board? This article deals with one of the most common errors that occurs during code uploading: “Failed to connect to ESP32: Timed out waiting for packet header.” To tackle this problem, we will introduce two methods. Steps to Troubleshooting “Failed to connect to ESP32” Error First of all, disconnect all wires connected to the ESP32 board. This simple thing might solve the issue! (Because the serial or USB pins could be in...

Introduction Would you like to unlock the full potential of a sensor? Do you enjoy challenging your limits? Well, that’s exactly what the HR202L sensor offers! HR202L is a variable capacitor with a non-linear logarithmic behavior, whose values depend highly on the ambient temperature. Whether you're new to Arduino or have been using it for a while, this guide will provide you with everything you need to get started with the HR202L sensor. By following clear instructio...

Introduction If you are interested in sensors, you are probably familiar with proximity detection sensors. There are various sensors available for proximity detection; each with its own capabilities and limitations. One method is to use the infrared transceivers. These sensors measure the time it takes for an infrared beam to travel back and forth and calculate the distance between the sensor and the target surface.In this tutorial, we’ll introduce the TMD27713 distance detection sensor. Whether you...