Prusa Mk4 5V USB power supply case
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Small case that houses a USB buck converter module and sits on top of the Mk4's power supply
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Model information
- Source
- Printables
- Category
- Prusa Parts & Upgrades
- License
- Creative Commons — Attribution — Noncommercial — Share Alike
To power a ESP32 webcam (upcoming project) and an ESP32 WiFi repeater, I needed two USB ports for 5 V power supply on my printer. I bought a suitable step-down module on AliExpress to convert down the 24 V output voltage of the Mk4's power supply (LM2596 USB is a good search phrase for the module I used).
The module is held in the housing with a bit of hot glue. The housing sits on top of the power supply and gets held on with one M4 screw through the existing hole. It should clamp on a bit - if it's loose in the back, just put a strip of double-sided tape there.
Connection is made with a pair of wires down to the 24 V output of the power supply.
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