Differences

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--- uav_lesson7 [2016/08/21 20:00] – [Part 3: Future Uses of Channels 7 and 8] jadintredup
+++ uav_lesson7 [2016/08/21 21:04] (current) – [Part 1: Auto Trim and Save Trim] jadintredup
@@ Line 14: / Line 14: @@
 Now we will experiment with a few different options for these switches.
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-===== Part 1: Auto Trim and Save Trim =====
+===== Part 1: Save Trim =====
-The first selection used will be the Auto Trim or Save Trim selection.  These functions save any Tx trim offsets needed to reduce flight drift while in Stabilize mode.\\
+The first selection used will be the Save Trim selection.  This functions saves any Tx trim offsets needed to reduce flight drift while in Stabilize mode directly to the flight controller. The steps to do so are as follows:\\
-**INSTRUCTIONS ON HOW TO USE THESE FEATURES TO COME**
+  - Ensure that your channel 7/8 is set to a switch that can achieve a value greater than 1800
+  - Set the channel 7/8 function to save trim.
+  - With the switch in the off position, fly your copter in stabilize mode and use the roll and pitch trims to keep it level as opposed to the roll and pitch stick.
+  - Land your craft and lower your throttle all the way.
+  - Change your save trim switch to high for at least one second.
+  - Reset your roll and pitch trims to zero and fly again. If your craft doesn't stay leave, repeat steps 3, 4, and 5.
+An alternative to the save trim function is the Auto Trim function. Auto trim functions similarly to save trim, however instead of manually setting the trims, the flight controller will set the trims depending on your roll and pitch inputs. The steps to invoke auto trim are as follows:\\
+  - Find a wind free environment so that the you are not fighting wind when attempting to stabilize.
+  - Hold the throttle down and to the right for 15 seconds, or until you see the red, blue, and yellow LEDs on the flight controller flash in a cyclic pattern.
+  - Fly your copter in a stable hover for around 25 or more seconds.
+  - Land and lower the throttle all of the way for a few seconds to allow the trims to save.
+  - Take off and fly again to make sure the vehicle remains stable. If not, repeat steps 2, 3, and 4.
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