Raspberry Pi HAT Design Overview
where you have conbcet on/off pin?
Thought for 12 sec
I don’t see any uploaded-file evidence showing that the LM2596 ON/OFF pin is already connected somewhere in your design. The file search results returned only general guidance files, not a schematic snippet or net listing for that pin, so I can’t point to an existing connection from the uploaded material
So the direct answer is:
- If you’re asking “where should I connect it?” → connect ON/OFF to the power-side ground so the regulator stays enabled.
- If you’re asking “where did you connect it in the design?” → I did not verify an actual placed connection from the uploaded files; there isn’t enough file evidence to claim it is already wired anywhere
For your board, that means:
- LM2596 ON/OFF -> Power_GND
- Keep it on the buck / 24 V side
- Do not connect it to the isolated Pi ground plane
- Do not leave it floating
If you want, I can next help you identify the exact LM2596 pin number for ON/OFF from the datasheet and give you the full pin-by-pin connection map.
Pin map please
Check datasheet pin
Review ground domains
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