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Fix relay not switching on at boot with boot preset #5313

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Fix relay not switching on at boot with boot preset #5313

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c627052
Initial plan
Copilot Jan 24, 2026
0d5d08e
Fix relay not switching on at boot when boot preset has on:true
Copilot Jan 24, 2026
b481e85
Add delay and comment to boot preset relay fix
Copilot Jan 24, 2026
a51c3cf
Final validation complete
Copilot Jan 24, 2026
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1 change: 1 addition & 0 deletions _codeql_detected_source_root
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11 changes: 11 additions & 0 deletions wled00/presets.cpp
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Expand Up @@ -212,6 +212,17 @@ void handlePresets()
if (changePreset) notify(tmpMode); // force UDP notification
stateUpdated(tmpMode); // was colorUpdated() if anything breaks
updateInterfaces(tmpMode);

// Fix for boot preset with relay: ensure relay state is correct after boot preset is applied
if (tmpMode == CALL_MODE_INIT && rlyPin >= 0 && bri > 0 && offMode) {
// Boot preset turned LEDs on, but relay might not have been updated yet
// Force relay on immediately instead of waiting for handleIO()
// (Similar relay control logic exists in handleIO(), but we need it here for the boot case)
pinMode(rlyPin, rlyOpenDrain ? OUTPUT_OPEN_DRAIN : OUTPUT);
digitalWrite(rlyPin, rlyMde);
delay(50); // wait for relay to switch and power to stabilize
offMode = false;
}
}

//called from handleSet(PS=) [network callback (sObj is empty), IR (irrational), deserializeState, UDP] and deserializeState() [network callback (filedoc!=nullptr)]
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