Wireless home sensor network

Building a wireless home sensor network – Part 1

As wireless controllers and sensors get cheaper and cheaper and more comfortable to use I decided to finally implement the idea I’ve had for a long time: setting up a wireless sensor network. Apart from being a fun project i will start with a small weather station and later add a automatic plant watering system.

This will be a series of articles which I’ll post as the project progresses. So far I’ve only got some basics done therefore things might change along the way. We’ll see how things will turn out.

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Customizable cable duct

Whenever you do some electronics project there’s a good chance at least a few wires have to be routed around between boards, connectors and such. When you want to do it well organized it’s usually hard to find a proper cable duct, that’s why I spend some time in OpenSCAD to write a fully customizable version. With a few settings you get a 3D model that’s easily printable.

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OctoPrint Control Box

This box contains a Raspberry Pi running the fabulous OctoPrint / OctoPi, a 5 V power supply and an SSR. It allows you to remotely turn on and off your attached 3D printer, either by using the web interface, by sending G-Code or with a custom system command, which is needed to use the feature through the Telegram plugin. Two hardware buttons are also available to power on/off the printer or send a shutdown command to properly power off the Pi.

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CoreXY Laser Engraver Mk2

Update time! The CoreXY Laser Engraver has been updated with a motorized Z axis and numerous other enhancements… like more laser power. Har Har Har!

When Jogi posted his make on Thingiverse he already added many improvements over my initial design, like cable chains, larger build area and overall cleanliness (I’ll address this one in Mk3 😉 ). We started discussing about a Z axis and it got me hooked up right away. Here’s the result!

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CoreXY Laser Engraver

Lasers are fun, especially high-power ones. Some time ago I purchased a 1 W blue laser and due to a recent 3D printer upgrade I had some spare linear motion components. The next steps are quite obvious, build a 2D laser engraver! I’ve always liked the CoreXY kinematic design and chose to use it in this project.

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