I am struggling to figure out how to use my radio channel 7 to actuate a dropper unit I have plugged into the 8th slot of the unit (I forgot what its called) where my motors are plugged into my Holybro 6c FC. Servo 8 function is set to 28 (gripper), RC7_OPTION is set to 19 (Gripper Release), GRIP_ENABLE = 1, my min is 983 and max is 2006. My parameters are attached. Any help is greatly appreciated, happy thanksgiving to everyone!
Holybro X500 V2 Save Dropper.param (19.9 KB)
Try using FMU output 1 instead and configure Servo 9 function for gripper.
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I apologize. Can you explain to me what FMU output 1 is and where to find it? There are so many acronyms I cant keep em straight. Here is my servo setup.
You have the motors connected to the I/O PWM Outputs. Beside that is another connector FMU PWM Outputs. Put the servo on pin 1 of the FMU PWM Output. Where it gets confusing is that the number keeps going. The I/O PWM are pins 1-8 (SERVO1 to SERVO8). The FMU pins are labeled on the FC also as 1-8, but Ardupilot calls them SERVO9 to SERVO16.
Ok, I have RC7 to gripper, Servo 9 function to 28 (gripper), grip enabled. Did I do this correct?
Holybro X500 V2 Save Dropper.param (19.9 KB)
How are you powering the servo?
It should be being powered by the PWM I have pictured above. Brown (ground), Red(power) and Yellow(signal)
Are you applying 5V power to the rail. It is not powered by the autopilot automatically.
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Is that a setting change? Or physically need to power it somehow
Not a setting. You need to get a 5V regulator that is powered off of your battery and then plug it into the servo rail so that it is powered by your regulator.
Ok I follow. Could I use an empty connection on my FC for power? I have a kit with all the plug types. Seems like the ones that are plugged in, power is always on the far right pin. Or is that a bad idea? I wish I had bought that FC in your picture. I have. Holybro 6c which doesn’t have built in PWM, it has two separate units.
Just power the servo directly and use the signal pins from the Flight Controller only.
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