Monday, 29 July 2019

Not Much to Look At - Yet

It was about time I put the 3D printer back into use.  I have an idea for a different way to display weather information, including air quality, using the 3.5 inch TFT colour display connected to an Arduino Mega. To that end I have started designing a front panel for an enclosure for all the gubbins.

Measured the size of the actual display panel and used TinkerCad to start designing a 3mm thick panel.

Design2T

Saved the instructions as a .stl file which was loaded into ultimate Cura to make the instructions the
3D printer needs

Design2C

This is actually mk2. With the original simple cut out (which amazingly fitted first time) there was a slight problem. The right hand side of the display circuit board has many pins for the connections. They stopped the display from being perfectly flat. As might just be discernible on the above picture there is now a cut out section 1.5mm deep to take care of this.

Photo of mk1 prototype with screen fitted (just showing a font test program)

DSCN9893

Another section which will probably have a bit of work done is on the left hand side. There is a reset button on the circuit board so I will have to redesign the filled area to fit round this. It's a slow old job as each 3D test print takes about 3.5 hours to complete.

Marks on the screen are from the protective clear plastic covering which I have left in place.

2 comments:

  1. These little projects are sent to test us. It may be worth just getting a step drill for the hole. Banggood have some crackers.
    I have never used Cura but stick with FreeCAD at home and SolidWorks when I'm allowed to use posh stuff.
    The software matters little it's the result that matters. That and the fun working it all out.

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    Replies
    1. Adrian: I have a set of step drills. Very useful they are at times. This, though, is an exercise and practice in real life measuring and fitting objects. A new experience for me, apart from the practical metalwork exam I took more than a few years ago. I really miss all the facilities that school workshop had. Woodwork I could never come to terms with. Metal did exactly as it was told. Wood had a mind of its own! Now in the 21stC, in effect, I'm playing with molten plastic.

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Thank you for visiting. Hope you enjoyed the pictures. Any comment, or correction to any information or identification I get wrong, is most welcome. John

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