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Paper Scout sweeper bot: a 251-part brick model designed with BricksChat

Paper Scout sweeper bot

Could you make me a little brick Roomba for paper scraps? It should avoid things and find its way back to a coloured home marker. I have one SPIKE Prime hub and up to 3 motors. Build it and write the code. Here’s a picture of how I want it to look.
AI concept picture
251 parts
All connected
No parts colliding
Nothing floating
This looks 100% original
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Full instructions and parts lists. No account needed.
Instructions · 90 steps · 95 pages
Parts list · 251 pieces · 60 kinds
Gather your own pieces or use the CSV’s part names, colours, quantities and Pick a Brick searches. IDs are LDraw part IDs, not LEGO element IDs. Check the colour and variant before ordering; some pieces may be unavailable or need a substitute. The CSV is a shopping list, not a cart import.
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Photo attached