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…
Category: Common
How to Print the Turntable Platform
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…
Why Supporting me on Patreon?
First, I’d like to thank you very much for reading this, 😄 because it means you are already a great supporter of my work. On my blog, you saw beautiful photos of electronic boards, got detailed instructions on how to build plant watering sensors, fan controllers or a pet feeder. Also, you get access to…
Pet Feeder Update
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…
Art Like Boards from OSHpark
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…
The MicroPython Bitmap Tool
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. 😄 More Posts
Flawless PCB by Eurocircuits
I got another flawless, perfectly produced PCB by Eurocircuits. This is Revision A of the input panel board I published in the last post. There are only minor changes in the silkscreen and a little bit larger rings around the holes for the LED. Eurocircuits is not the cheapest board prototyping service, but in my…
Tall Boxes Ready for Download
The tall boxes set is ready for download, after successfully completing my tests. You will get carefully designed storage boxes, optimised for 3d print from the ground up. Only this weekend, from 2020-11-27 to 2020-11-29, all STL files in the shop are 20% off. The new set fits well into the series. In the picture…
Organizer Boxes Optimised for 3D-Print
One of the reasons I didn’t publish as many articles are before, is I am still organising my new lab. Because of the current pandemic, everything got delayed and there is still a lot of material which needs to be organised. After reviewing many existing designs and didn’t found one which matched my needs, I…
Circle Pattern Generator
I wrote a small application to generate random circle patterns. You just specify the width and height of the rectangle to fill and the application will fill the area with the circles you specified. The result can be exported in SVG format to use it in other applications. Interface Elements Width, Height: These define the…