LM317 Adjustable power supply board encloser
thingiverse
I bought dozens of these boards from eBay, a popular online marketplace where I found the LM317 Adjustable Power Supply Board With Rectified AC-DC Input DIY Kit for sale. However, they arrived naked and unfinished. Clearly, they need additional protection to prevent damage. The four holes in each corner require drilling with larger drill bits for a precise fit. Some hot glue may also be necessary to secure the board firmly in place.
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