Claude Code keeps writing delay() everywhere in my ESP32 sketch — how do I make it stop for good?

Replies

1. P

   Pete H. @pete-hRetired electrician · uses Claude Code

   Helped

   Put it in the CLAUDE.md in the project folder. Something like 'never use delay() in loop(), use millis() timers, here is the pattern' with a ten line example under it. It reads that file every session so you stop repeating yourself.

   Sep 6Nico P., oakes, Mei-Lin and others agree
2. O

   oakes @oakesuses Arduino

   Small pushback: delay() is fine in setup() and for a sensor warmup. I'd say 'not in loop()' rather than 'never' or it starts doing weird non-blocking waits where a plain delay(50) was the right call.

   Sep 7Mei-Lin and Pete H. agree
3. N

   Nico P. @nico-pData analyst · uses Claude Code

   +1 to CLAUDE.md. I also keep a patterns folder with the two or three snippets I want copied exactly and point at them from the file. It's much more obedient when there's a file to copy than a sentence to interpret.

   Sep 8quill and Pete H. agree
4. R

   rain @rainPython developer · uses Claude Code

   Also ask it to write the millis pattern as one tiny helper (every(ms) or whatever) and it'll reuse that instead of inventing a new timer each time.

   Sep 7Mei-Lin agrees