Guide for Rain Sensor FC-37 or YL-83 with Arduino
The rain sensor is used to detect water and it can detect beyond of what a humidity sensor do. This article explains how to use the FC-37 rain sensor module …
Project
Guide for Soil Moisture Sensor YL-69 or HL-69 with Arduino
The soil moisture sensor or the hygrometer is usually used to detect the humidity of the soil. So, it is perfect to build an automatic watering system or to monitor …
Electronics Basics – How a Transistor Works
Transistors are semiconductor devices with three terminals that can act as amplifier controls or electrically controlled switches.
Learning Basic Linux Commands – Raspberry Pi Cheat Sheet
A big part of using a Raspberry Pi is also using the terminal. The terminal is something that a lot of people try to avoid, because they feel like it …
ESP8266 RGB Color Picker
In this project, you’re going to build a web server with an ESP8266 to remotely control an RGB LED. This project is called ESP8266 RGB Color Picker. First, watch the …
Guide for MQ-2 Gas/Smoke Sensor with Arduino
This guide shows how to build a smoke detector that beeps when it detects flammable gas or smoke.
ESP8266 Controlled with Android App (MIT App Inventor)
In this project, you’re going to build an Android app using the MIT App Inventor software that allows you to control the ESP8266 GPIOs. First, watch the video demonstration To learn more about …
Security Access using MFRC522 RFID Reader with Arduino
This blog post shows a simple example on how to use the MFRC522 RFID reader. I’ll do a quick overview of the specifications and demonstrate a project example using an Arduino.
Raspberry Pi Web Server using Flask to Control GPIOs
In this project you’ll create a standalone web server with a Raspberry Pi that can toggle two LEDs. You can replace those LEDs with any output (like a relay or a transistor). …
Monitor Your Door Using Magnetic Reed Switch and Arduino
This tutorial demonstrates how to use a magnetic reed switch. I’ll do a quick overview on how it works and show a project example using an Arduino.
ESP8266 Troubleshooting Guide
The ESP8266 has a few common issues, specially when you are trying to flash a new firmware or uploading scripts. Here’s a compilation with some of the most common problems with the ESP8266 and how to fix …
ESP8266 – Wireless Weather Station with Data Logging to Excel
In this project we are going to establish a wireless communication between two ESPs and send data from three sensors to an Excel spreadsheet. This tutorial shows a wireless weather station with data …
Why You Shouldn’t Always Use the Arduino Delay Function
The very first time you used an Arduino board, you probably did something like this: Connected an LED to your Arduino Uploaded the default blink sketch that would turn on and off your LED every …
Arduino Serial Plotter – New Tool
The latest release of the Arduino IDE 1.6.6 comes with a new tool called Serial Plotter. This tools gives you the ability to visualize your data in a plot that is updated in real time.