Last time, I showed you how to setup the ESP32 development board with the Arduino programming environment. This time, I will be building a simple ESP32 web server where data from a sensor is displayed on a web page.

The ESP32 expands the capabilities of the popular ESP8266 WiFi microcontroller by using a 32-bit microprocessor, and adding Bluetooth 4.2 among others.  What possible projects can we build using this device? We will find out as we start our series for the ESP32.

Ever since I wrote about timer interrupts, a number of readers have asked me on how to generate a 16-bit pulse width modulation (PWM) signal with Arduino. Well, here it is.

Current sensors can have different applications: power supplies, over-current protection, and motor control to name a few. In this Arduino current sensor tutorial, we will look at how to read current using the ACS712 sensor.

An Arduino magnetic sensor has several uses: for reading the speed of a rotating object, for door alarms and for navigation. In this tutorial, we will build a simple magnet detector using a hall effect sensor.

In the previous tutorial, we set up a soil moisture sensor and have its data readable via WiFi. However, that data is only accessible if the NodeMCU and the client (smartphone, PC, etc.) is in the same network. In this tutorial, we will use a service that allows us to …

Plants need enough water to survive. But what if you forgot to water the plants? This multi-part tutorial aims to provide a simple soil moisture sensor that reminds you, via WiFi, that your flora needs a shower.

Guest Post from LHDPCB Many buyer have confuse about the price when they buy PCB from the PCB manufacturer , they want to know the factors which affecting the cost of PCB. Let's learn something about the cost of the PCB.

The Seeeduino Nano is Seeedstudio’s version of the new Arduino Nano. What can steer a maker towards this board instead of the original? We hope to answer that question in this featured article.

Relays in electronics are useful for controlling a high-power load using a smaller-power circuit. For example, an Arduino or PIC running on 5V, controlling a 240VAC light bulb, etc. This is what we shown in our Arduino relay tutorial. But did you know that there are different types of relay? …