Greatly improve portable AC unit efficiency
Single hose portable ACs suffer from terrible efficiency inherent to their design. Here is how they work and how to improve their efficiency.
Harvesting Lithium-Ion cells from old batteries
Reuse, reduce, recycle! Get yourself the ingredients for your own cheap batteries by harvesting lithium-ion cells from old batteries!
Inexpensive DIY Lithium-ion Battery Pack
Design and build your own inexpensive DIY lithium ion battery pack!
Ideal server rack 3D Printer Enclosure
A 3D printer enclosure made of tempered steel with a safety glass front door for 100€, with optional fan assembly. BoM & build guide.
