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Tutorials

Using RFID with Raspberry Pi Zero

Using RFID cards and tags is a cool way to switch on anything, wirelessly. For example, you can create an e-lock for your room, check meeting attendance or use cards to control your robot. In this tutorial, we will add RFID functions to a Raspberry Pi Zero.

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Vibration Sensor Tutorial

SW-420 Vibration Sensor breakout board

Vibrations can be an indicator that trouble is coming. It can be your machine going haywire, a gear on a robot missing a teeth, or worse, a looming earthquake! In this vibration sensor tutorial, we will look at how to detect vibrations using especially designed sensors and an Arduino microcontroller.

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PIC16F877A - More Microcontroller Features

PIC16F877A

We have managed to blink a LED, use interrupts and timers with the PIC16F84A. Sadly, that’s almost all we can do with that microcontroller as it lacks features that most microcontrollers or an Arduino has. From here on, we will now be using the PIC16F877A.

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Arduino Relay Module Tutorial

Arduino Relay module

A relay is commonly used to interface a low-current circuit to a higher-current circuit. As such, it’s very useful in controlling appliances and other mains-powered devices using microcontrollers. In this Arduino relay tutorial, I will show you how to use a relay with microcontrollers.

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How to Use the MQ-7 Carbon Monoxide Sensor

The MQ-7 carbon monoxide sensor is especially designed to be sensitive to carbon monoxide (CO) gas which is emitted by vehicles, factories, etc. Since this gas is considered toxic to humans at certain levels, concentration of CO is used to determine the air pollution in a given area.

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Creating a Simple Arduino Fire Detector

arduino fire detector

A fire or flame sensor is simply an infrared LED with an amplifier circuit. Flame radiates infrared signal, which triggers the LED to produce current. This current is converted to voltage for an analog to digital converter to read. Let's see how we can build an arduino fire detector using …

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How to Use the E32-TTL-100 SX1278 LoRa Module

E32-TTL-100 SX1278 LoRa Module

LoRa is a promising low-power, long range wireless transmission protocol developed by Semtech as part of the emergence of Internet of Things (IoT). Simply put, it is a method for sending data separate from WiFi, Zigbee or Bluetooth. Its low power consumption amidst very long range of transmission (up to …

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Arduino Boards

Arduino Boards

The number of Arduino boards have increased over the years; some have been discontinued while others are still available. The choice of which board to use depends on several factors: price, features, availability, ease of use, etc. Here’s a summary of all Arduino boards with their pros and cons.

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