DIY tent ventilation

(Text in German see below)DIY Tent Ventilation – Affordable, Energy-Efficient, and Easy to BuildThis is my 3D print template for a simple and effective DIY solution to ventilate a tent. It's ideal for use during camping trips, festivals, or in greenhouses—anywhere fresh air circulation is needed. The concept is straightforward: a standard PC fan handles both intake and exhaust ventilation.How It WorksThe fan can be mounted to provide either air intake or exhaust, depending on your needs. The design is deliberately low-power and can be easily powered via a USB connection.Bonus feature: The mount includes built-in holes for hanging the unit—perfect for attaching it inside your tent with hooks or zip ties.Parts Used1× 140 mm PC case fan (3- or 4-pin, with mounting screws included)→ Price: approx. €4–51× 4-pin to USB-A adapter→ Without switch: from €2→ With switch: from €31× USB-A power adapter or charger→ Usually already available; otherwise from €31× 38 mm pool hose→ Depending on len