Tag Archives: Arduino

How to use a Waterproof DS18B20 temperature probe with Arduino

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Waterproof DS18B20 temperature probe.

Waterproof DS18B20 temperature probe.

If you are automating a hydroponic system, aquaponic or just an aquarium, you know that have monitored the water temperature is critical to your system stays in top condition. Among the variety of submersibles temperature probes find a solution based on digital DS18B20 sensor. Here we explain how you can use with Arduino.

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How to use the Arduino Ethernet Shield

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Arduino Ethernet Shield

Arduino Ethernet Shield

Among the different ways to communicate with an Arduino, one is to use an Ethernet Shield will allow us to our Arduino to behave as a server or a client. Here we explain it up and running in a basic way.

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How to use a relay module with Arduino

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4-Channel relay module

4-Channel relay module

To control voltage fed else than we can use Arduino devices most common method is by relays. The relays provide us with electrical isolation between Arduino and the device in question we want to control such a lighting system, an engine AC or DC. Thus by means of Arduino digital pins we put on and off electrical appliances with a 0 or a 1.

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DHT11: digital temperature and humidity sensor

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Temperature and humidity sensor

Temperature and humidity sensor

If you are looking for a low cost sensor for measuring temperature and humidity one of the most common options is the DHT11 sensor. It has excellent quality, fast response, interference protection, digital communication and accurate calibration. All this makes it one of the most used for small home projects like greenhouses, home automation, controls temperature regulators, indoor thermometers or relative humidity sensors. Continue reading

Connect 1.8″ TFT SPI to Arduino UNO

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Test TFT connected to Arduino with the text “Scidle.com”

 If you are thinking of doing a project with Arduino UNO and need to view data without having to show them through a serial or USB port on your computer, you’ll need a small screen or display. Let’s see how to use a TFT 1.8″ by SPI. It is not designed for use with an Arduino UNO so its I/O ports do not work 3.3V but 5V. What it allows is powered at 5V, in fact if we feed it to 3.3V for use with an Arduino Nano or 3V Trinket have to short the JP1 connection to not use the voltage regulator that powers both the TFT as the SD card. In this case we will not use the SD Card, but also works at 3.3V, although explain its use in another entry.

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Install GitHub libraries on Arduino IDE

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GitHub

GitHub

If you’ve ever been looking for Arduino libraries sure you finished in GitHub. This web repository has thousands of libraries that can be very useful for our projects with Arduino. Let’s see a couple of ways to install a library that is hosted on GitHub. For this example I chose the aJson library.
In the first place we will see how a manual installation would be done, for which we need to download the library in a ZIP clicking the Download ZIP button inside the project page.

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