fix(esc): add offset between two ESC

controller/controller.ino

@@ -75,6 +75,7 @@ const uint16_t gMAX_RPM = 3000;    // Motor maximum RPM (set in ESC)
 const uint16_t gMIN_RPM = 750;     // Motor minimum RPM (set in ESC)
 const uint8_t gMAX_ESC_VAL = 160;  // Value at which motor is at max RPM
 const uint8_t gMIN_ESC_VAL = 40;   // Min value for ESC to start motor (trial-error)
+const uint8_t gESC_OFFSET = 4;     // Offset to add to ESC 2 to sync them
 
 const uint8_t gCSN_PINS[] = CSN_PINS;     // Encoder Chip Select pins
 const int8_t gENC_ORIENT[] = ENC_ORIENT;  // Encoder orientation
@@ -172,7 +173,7 @@ void loop() {
 
   // Write value to ESCs
   gEsc1.write(gEsc_val);
-  gEsc2.write(gEsc_val);
+  gEsc2.write(gEsc_val + gESC_OFFSET);
 
   // Read value from rotary encoders
   for (int i = 0; i < sizeof(gCSN_PINS); i++) {