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+====== GearLock ======
+//Gear safety system for rc aircrafts with retractable gears//
+{{:rc:gearlock:gearlock_labels.png?600|}}
+===== Overview =====
+GearLock prevents a retractable gears to retract if the aircraft is not airborne.
+For this, the moduel is connected between the receiver channel for the gear, and the gear itself.
+The module has a LED for status information and a single button for setup.
+===== Setup =====
+  - Connect the module between the receiver and the rectractable gear
+  - Place the sensor on the aircraft. It must point down with free sight to the ground.
+  - Power up the aircraft.
+  - Hold the button 5 seconds until the led blinks fast.
+  - Bring the gear  to **DOWN** position.
+  - Place the aircraft on a flat underground.
+  - Press the button short. The blinking will stop.
+  - The module is now operating normally.
+===== Operation =====
+If the aircraft is on the ground, the retraction of the gear is blocked by the module.
+A solid red LED indicates that the aircraft is on the ground and the gear switch is on DOWN position.
+If you now try to retract gear (bring gear switch on transmitter to UP position) the gear operation in blocked and the LED will blink slowly.
+**In this case, gear operation is blocked even if the aircraft is now lifted from ground. First bring gear switch to DOWN position again to unlock gear operation.
+**
+If the gear switch in brought back to DOWN position, the will be solid again.
+If the aircraft is not on ground, the LED will go off. Normal gear operation is now possible.
+Extension of gear is always possible. Only retraction is blocked by the module.
+==== Module states of operation ====
+^LED^Gear Operation^Description^
+|Off|Normal|Aircraft is lifted from ground|
+|Solid|Blocked|Aircraft is on ground|
+|Slow blink|Blocked|An Attempt was made to retract blocked gear.|
+|Fast blink|Normal|Setup mode. Press button short to finish setup|
+===== Technical Data =====
+^Property^Value^Unit^
+|Operating Voltage|4,5-9|V|
+|Sensor distance to ground|10-50|cm|
+===== Ordering =====
+^Item^Price^
+|GearLock fully assembled|35 EUR|
+Shipping: 2 EUR withing Germany, 6 EUR EU+Switzerland. Other countries on request.
+Anfragen, Bestellungen und sonstiges bitte an: [[mailto:mail@cyblord.de | mail@cyblord.de]]
+Direkte Bestellanfrage via Formular: [[https://docs.google.com/forms/d/1VSgiYmssVwemq3bbX78anU7J0pa_if-jDGa_M_Y3X2Y| Bestellanfrage]]