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Category: Common

Get Blog Updates With the New Mailinglist

Posted on 2022-10-30 by Lucky Resistor

In a few days, I will stop using Twitter for project notifications. If you like to get notified about new projects and updates, please subscribe to the new mailing list: It is a low-frequency mailing list, with one mail per new blog post and occasionally an update about a running project. I aim to keep…

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Build a Sustainable Refillable Active Coal Filter

Posted on 2022-09-20 by Lucky Resistor

If you ever used air filters to keep smells, fumes and dust at a low level in your workshop, you for sure came in contact with these expensive throwaway active coal filters. While throwing-away the used active coal seems to be unavoidable, all the thrown away plastic and packaging of the filter can easily be…

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Round Corner Template Set for Woodworking

Posted on 2021-10-29 by Lucky Resistor

Sometimes I like to have rounded corners in my woodworking projects. It seems many people like to soften the spiky ends of their panels because there is a huge range of templates for routing. If you own a 3d printer, it is handy you can print just the template with the size you actually need….

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Storage Boxes System Survey

Posted on 2021-08-13 by Lucky Resistor

Please take the following survey to help with further development of the storage boxes system. It is the best way to nudge future changes of the system into the direction you like. πŸ˜„   More Posts

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New Storage Boxes

Posted on 2021-08-13 by Lucky Resistor

Today I published several new storage boxes with the label section placed at a different side. So, it will allow you to use the same box size in a drawer but keep all label orientations the same. The following two illustrations show the difference between the 1βœ•2 and 2βœ•1 size: Both boxes have exactly the…

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Build and Heat Treatment of a Carbohydrate Source

Posted on 2021-07-06 by Lucky Resistor

In this short tutorial, I will explain step by step, how you can build a solid carbohydrate source. You will find the bill of materials and all required tools. I will use SI units to simplify all measurements. This is no quick build, the substances require long reaction and activation times. For this reason, the…

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How to Print the Turntable Platform

Posted on 2021-04-05 by Lucky Resistor

When I wrote part 3 of the pet feeder series, I did not expect the light transmission issues of this part. Now, I have two solutions with new revisions of the part. Solution 1: Epoxy Filled Slots This is the superior solution with the best results, but it requires you to fill four tiny slots…

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Pet Feeder Update

Posted on 2021-03-15 by Lucky Resistor

A short update about the progress with the sensor panel and photos of the final input panel board. I assembled the new boards and are testing the sensors. As soon as all tests are done, and I am happy with the results and the board’s design, I will write the next part. These are 940nm…

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Art Like Boards from OSHpark

Posted on 2021-03-12 by Lucky Resistor

For the pet feeding device, I ordered boards from OSHpark with the “After Dark” style. This colour combination of the black substrate with the copper and transparent solder mask is just beautiful. I made this post just in case you did not see the pictures on Twitter or like to see them with a better…

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The MicroPython Bitmap Tool

Posted on 2021-03-11 by Lucky Resistor

I created a new tool to easily convert bitmaps into code for MicroPython. This first version is just a start, creating a framework where I can add additional converters. If you have any questions, missed information, or simply want to provide feedback, feel free to comment below or contact me on Twitter. πŸ˜„ More Posts

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