The RP2040, is a cheap dual-core cortex m0+ MCU and has excellent software support!
The RPI PICO is perfect for DIY projects, but its humongous size, makes it not ideal for slimmer projects. This RP2040 Module should decrease the spacing a bit :)
It measures 11.5 mm wide times 18mm long. That's quite small for a handsolderable device :) smaller then 0.5" x 0.7".
The pad on the bottom is for GND if wanted.
Then ofc a render in Fusion360 with the copper layers exposed
Here is an RPI Zero for scale, I didn't export the copper fill on the Zero platform, so it looks a bit off. Fusion has performance issues of the copper layers, so I try not to export them to often, but it looks so mutch cleaner!
I will try to learn blender to get nicer 3D Renders in the future
It should be quite solderable with an 1.27mm pitch, see above for 0603 LED diode for reference.
If you want to make a 3D render like this, check out my article on PCBWay:
If you would like to see a small batch of these produced, leave a comment below and tag RPI so I can get my hands on some sweet RP2040s.