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Guide to I2C OLED Display with Arduino

This article shows how to use the SSD1306 0.96 inch I2C OLED display with the Arduino. We’ll show you some features of the OLED display, how to connect it to the Arduino board, and how to write text, draw shapes and display bitmap images. Lastly, we’ll build a project example that displays temperature and humidity…

Build a Night Security Light with Arduino

In this project you’re going to build a night security light with a relay module, a photoresistor and an Arduino. A night security light only turns on when it’s dark and when movement is detected. Here’s the main features of this project: the lamp turns on when it’s dark AND movement is detected; when movement is detected…

Arduino with PIR Motion Sensor

In this project you’re going to create a simple circuit with an Arduino and PIR motion sensor that can detect movement. An LED will light up when movement is detected. Introducing the PIR Motion Sensor The PIR motion sensor is ideal to detect movement. PIR stand for “Passive Infrared”. Basically, the PIR motion sensor measures infrared light…

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. Description RFID means radio-frequency identification. RFID uses electromagnetic fields to transfer data over short distances. RFID is useful to identify people, to make transactions, etc……