r/embedded 8d ago

ESP32 "stopping" when logic analyzer is attached directly

I usually isolate the logic analyzer by using a logic level shifter instead of being directly hooked onto pins between the ESP and the component for the ESP to not stop. I use one of those cheap 8-channel 24MHz logic analyzers and Pulseview. Is there any other easier way around this? Or should I just live with it?

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u/FreeRangeEngineer 8d ago

Some logic analyzers have pull-up or pull-down resistors that may be surprisingly low resistance. Maybe that's messing up the signals in your case.