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Arduino Interrupts

Interrupts are a fantastic tool to help increase the efficiency of your Arduino code and are typically very underutilized! So what exactly is an interrupt? In simple terms, interrupts are a mechanism found on Arduino (and many other microcontrollers) that simplify the process of reacting to real time events. This is achieved by constantly monitoring the status of a pin and immediately executing code, interrupting whatever was currently running, when the state of a pin changes (or on a rising or falling edge as desired). As you can imagine, this is significantly more efficient than having to wait for your code to reach the specific line where it checks the status of an input, and it frees up your Arduino to focus on other tasks rather than monitoring the state of a pin. To learn more about interrupts and how you can use them in your projects check out the video below from Core Electronics.

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Hockey Sin Bin Management System

At SuperHouse Automation we love it when our fans share their own projects with us. Ben Lennard from Lennard Electronics recently got in touch and shared his great project. Using four Freetronics dot matrix displays, Ben has built a sin bin management display for the National Hockey Stadium in Wellington. Whilst the system is used to display the time and various advertisements, the primary use is to keep track of how long different players have been in the sin bin.

The displays

Ben’s project uses four DMD’s which are chained together and controlled by an Arduino Uno. The Uno receives commands from a Raspberry Pi powered touchscreen controller box, via a Bluetooth link. The outdoor display is housed in a custom built fiber glass case, which has special vents built into it to allow air to flow in and out whilst still keeping dust and water out. Thanks Ben for sharing!

The touch screen controller

The Hockey Statium

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DIY Soldering Station

Most hobbyists start off with a cheap and nasty soldering iron which takes minutes to heat up, and provides no temperature control. Whilst a decent soldering station is a significant upgrade from a typical beginners iron, the cost can be prohibitive. Thankfully, GreatScottLab has put together a great instructable detailing how you can build your own fully controllable soldering station.

The parts required to build a DIY soldering station.

Not only is building your own significantly cheaper than buying a soldering station, but the process of building the electronics and 3D printing the enclosure provides a fantastic educational opportunity! To find out more about how you can get started building your own soldering station checkout the following link.

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I2C For Arduino

The I2C or “I squared C” bus is a simple way to transfer data between different integrated circuits, boards or sensors in your Arduino project. I2C stands for “Inter-Integrated Circuit”. One of the great things about I2C is that it only requires two connections to your Arduino, SDA (data) and SCL (clock), and you can easily connect multiple devices to the bus. If you want to learn more about the I2C bus checkout this tutorial from tronixstuff, or this tutorial from How To Mechatronics.

I2C

Want to keep in the loop about the latest in home automation? Subscribing to SuperHouse Automation on YouTube is the best place to start!

Inspired to start work on this project? Are you working on a project you would like us to feature in this blog? The team at SuperHouse Automation would love to know! Tell us about it in the comments section below or on Facebook and Twitter.