From 3c874914ef7c484ba8468f16bc4ff471cb224f3c Mon Sep 17 00:00:00 2001
From: dtoro <d.toro.v@pm.me>
Date: Wed, 29 Apr 2026 23:05:33 +0200
Subject: [PATCH] =?UTF-8?q?fix:=20kick-start=20fan=20on=20every=200?=
 =?UTF-8?q?=E2=86=92on=20transition?=
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Previous kick-start only fired when duty < 200, but all level duties are
≥230, so L1 starts from rest at PWM 230 and the rotor can't break static
friction. Now we briefly drive 100% on any off→on transition before
dropping to the target duty.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
---
 main/main.ino | 11 ++++++++---
 1 file changed, 8 insertions(+), 3 deletions(-)

diff --git a/main/main.ino b/main/main.ino
index 5f886f1..b7c67f4 100644
--- a/main/main.ino
+++ b/main/main.ino
@@ -55,16 +55,21 @@ int yOffset = 30;
 uint8_t fanLevel = 0;  // 0 = off, 1..NUM_LEVELS
 
 void applyFan() {
+  static uint8_t lastDuty = 0;
   if (fanLevel == 0) {
     ledcWrite(FAN_PIN, 0);
+    lastDuty = 0;
     return;
   }
   uint8_t duty = LEVELS[fanLevel - 1].duty;
-  if (duty > 0 && duty < 200) {
-    ledcWrite(FAN_PIN, 255);  // kick-start
-    delay(300);
+  // Kick-start whenever spinning up from stopped — full duty briefly so the
+  // rotor breaks static friction, then drop to the target.
+  if (lastDuty == 0) {
+    ledcWrite(FAN_PIN, 255);
+    delay(400);
   }
   ledcWrite(FAN_PIN, duty);
+  lastDuty = duty;
 }
 
 void publishFan() {