World map

Parts:

• 1x NodeMCU with WLED installed
• SK6812 or WS2812b LED-strip ~7m/420led (I have used 398 leds)
• 5V Power Supply (10A)
• Paint
• Primer
• Filament (color for base) - 1kg
• Filament (transparent)

Result:

Demo video:

Process

Step 1: Designing the 3D Model

I began by designing a 3D model of the world map using Fusion 360. The final size of the map was 181x90 cm. To make the printing process manageable, I split the map into blocks, combining some countries together. All connections were done along the country borders to minimize the need for puttying straight lines later. You can find all the 3D model files on Thingiverse or here.

Step 2: Printing the Map

To keep track of the printing process, I first printed the entire map on paper. This provided an easy layout and helped me see what parts were already printed and what was left to print. You can download the files for the paper map layout here.

Step 3: Preparing for Painting

Once all the parts were printed, it was time to prepare them for painting. Some larger countries like China, Russia, the USA, Canada, Argentina, Brazil, Greenland, and Australia needed puttying to smooth out the connections. Here are some images of the process:

Step 4: Applying Primer

After puttying, I applied a primer to all parts to ensure the paint would adhere properly.

Step 5: Choosing Colors

I experimented with different colors in Fusion 360 and finally decided on a color scheme. Although I made some changes during the painting process, the overall look was cohesive and vibrant.

Step 6: Painting the Map

The painting process was the most creative part. Each country was painted according to the selected color scheme. Here are some images of the painting process:

Step 7: Creating Mounting Aids

To make mounting easier, I created 3D models for the islands and glued them together with the main continents.

Step 8: Adding Backlights

For an extra touch, I added backlights to the map. LEDs connected to NodeMCU with WLED installed.

Step 9: Designing Mounting Standoffs

I wanted a solution that would allow easy removal of the map from the wall. Instead of screws, I used double-sided tape and designed mounting standoffs with magnets between the map and the standoffs.

Step 10: Mounting the Map

To mount the map correctly:

1. I placed the paper map on the wall in the desired location.
2. Using holes in the paper map and a pencil, I marked the corners of each continent on the wall.
3. I removed the paper and began securing the map with double-sided tape.

This method ensured the map was mounted accurately and securely.