Traffic Light for education

My oldest kid wants to become a police officer, so I built a custom, "little" traffic light for him to play and learn. It’s a fun and functional project with some cool features!Features:You can choose between 1 to 4 working lights.On top, there's a modular cap for add-ons — I’m currently designing a speed camera module. I already have the hardware ready, just need to 3D-print the flash holder.Two versions available:Powered by Raspberry PiPowered by Siemens LOGO! PLC with RF remote controlIncludes schematic (see below or ask if you can't find it)Build Notes:This is a multi-day print (about 3 days total).All required pieces are included in the files.You’ll need to adapt some parts to your specific hardware.⚠️ Not mobile app–friendly — you’ll need a PC to control it.⚠️ Once assembled, it cannot be disassembled easily — build with care!⚠️ For the light units, I recommend using a special infill pattern like Concentric, Archimedes, or Honeycombfor better light diffusion and p