diff --git a/examples/osd/arduino-sketch/led_pwm.h b/examples/osd/arduino-sketch/led_pwm.h
index 31356fd78..5931bdc50 100644
--- a/examples/osd/arduino-sketch/led_pwm.h
+++ b/examples/osd/arduino-sketch/led_pwm.h
@@ -23,12 +23,12 @@
 
 extern uint8_t  pwm;
 extern uint8_t  period_100ms;
-extern uint16_t analog1_voltage;
+extern uint16_t analog2_voltage;
 extern uint16_t analog5_voltage;
 
 extern resource_t resource_led_pwm;
 extern resource_t resource_led_period;
-extern resource_t resource_analog1_voltage;
+extern resource_t resource_analog2_voltage;
 extern resource_t resource_analog5_voltage;
 
 #endif // led_pwm_h
diff --git a/examples/osd/arduino-sketch/resource_led_pwm.c b/examples/osd/arduino-sketch/resource_led_pwm.c
index 2ed1cdd78..a7c1e1182 100644
--- a/examples/osd/arduino-sketch/resource_led_pwm.c
+++ b/examples/osd/arduino-sketch/resource_led_pwm.c
@@ -70,19 +70,19 @@ GENERIC_RESOURCE \
     );
 
 size_t
-analog1_v (const char *name, uint8_t is_json, char *buf, size_t bufsize)
+analog2_v (const char *name, uint8_t is_json, char *buf, size_t bufsize)
 {
   return snprintf
-    (buf, bufsize, "%d.%03d", analog1_voltage / 1000, analog1_voltage % 1000);
+    (buf, bufsize, "%d.%03d", analog2_voltage / 1000, analog2_voltage % 1000);
 }
 
 GENERIC_RESOURCE \
-    ( analog1_voltage, METHOD_GET
-    , "analog/1"
-    , Analog 1 voltage
+    ( analog2_voltage, METHOD_GET
+    , "analog/2"
+    , Analog 2 voltage
     , V
     , NULL
-    , analog1_v
+    , analog2_v
     );
 
 size_t
diff --git a/examples/osd/arduino-sketch/sketch.pde b/examples/osd/arduino-sketch/sketch.pde
index ef47d4271..8874c056a 100644
--- a/examples/osd/arduino-sketch/sketch.pde
+++ b/examples/osd/arduino-sketch/sketch.pde
@@ -16,8 +16,8 @@ extern "C" {
 #define LED_PIN 4
 
 uint8_t  pwm             = 128;
-uint8_t  period_100ms    = 10; /* one second */
-uint16_t analog1_voltage = 0;
+uint8_t  period_100ms    = 1; /* 1/10 second (period_100ms * 100ms) */
+uint16_t analog2_voltage = 0;
 uint16_t analog5_voltage = 0;
 }
 
@@ -26,7 +26,7 @@ void setup (void)
     rest_init_engine ();
     rest_activate_resource (&resource_led_pwm);
     rest_activate_resource (&resource_led_period);
-    rest_activate_resource (&resource_analog1_voltage);
+    rest_activate_resource (&resource_analog2_voltage);
     rest_activate_resource (&resource_analog5_voltage);
 }
 
@@ -34,8 +34,8 @@ void loop (void)
 {
     /* Use 255 - pwm, LED on merkur-board is wired to +3.3V */
     analogWrite (LED_PIN, 255 - pwm);
-    analog1_voltage = analogRead (1) * 1600L / 1023L;
-    analog5_voltage = analogRead (5) * 1600L / 1023L;
+    analog2_voltage = analogRead (A2) * 1600L / 1023L;
+    analog5_voltage = analogRead (A5) * 1600L / 1023L;
     printf ("clock : %u\nmillis: %lu\n", clock_time (), millis ());
     delay (period_100ms * 100);
     analogWrite (LED_PIN, 255); /* OFF: LED on merkur-board is wired to +3.3V */
diff --git a/platform/osd-merkur/dev/pins_arduino.h b/platform/osd-merkur/dev/pins_arduino.h
index 1441439aa..738444bd1 100644
--- a/platform/osd-merkur/dev/pins_arduino.h
+++ b/platform/osd-merkur/dev/pins_arduino.h
@@ -57,14 +57,12 @@ const static uint8_t LED = 4;
 const static uint8_t LED1 = 4;
 const static uint8_t LED2 = 5;
 
-const static uint8_t A0 = 15;
-const static uint8_t A1 = 16;
-const static uint8_t A2 = 17;
-const static uint8_t A3 = 18;
-const static uint8_t A4 = 19;
-const static uint8_t A5 = 20;
-//const static uint8_t A6 = 21;
-//const static uint8_t A7 = 22;
+const static uint8_t A0 = 7;
+const static uint8_t A1 = 6;
+const static uint8_t A2 = 5;
+const static uint8_t A3 = 4;
+const static uint8_t A4 = 0;
+const static uint8_t A5 = 1;
 
 // A majority of the pins are NOT PCINTs, SO BE WARNED (i.e. you cannot use them as receive pins)
 // Only pins available for RECEIVE (TRANSMIT can be on any pin):