"$20 sent to Kevin."

"Well, that's excellent.  A few hours after emailing feedback@ I have an order on the way with discount applied. :-)"

"I tried and did not get a discount but also got this error message when trying to setup the shipping address for my newly created account:

Shipping Error: This shipping method isn't available for United States

I'll send this to feedback@ as well."

"The problem was that I misunderstood what radio calibration was doing.  Somehow I was under the misconception that it wanted to see what everything looked like in neutral position and idle throttle.  Reviewing things a bit, I now understand why.…"

"Alright. I got it working tonight.

And as soon as I get over what a dumb mistake I made, I'll explain it here. :-|"

"Chris:

Thanks for trying.  Yes, outputs stay fixed, which is why I'm wondering if I can check/clear the calibrated flag directly.  I'd like to know it is set right because the output values from APM don't change when I move the throttle--though the…"

"Yeah, that's a few notches above minimum.  I calibrated with minimum right around 1000."

"This is quite odd.  I messed around with trim a bit and did radio recalibration with the min throttle at just below 1000 and then another time just above 1000.  No difference.

In the Mission Planner's status tab, I see the ch3in vary as I move the…"

"Randy:

Yes, I get the beeps and music.

I did the channel 3 test to motor #1 and it responded to throttle.

I did notice that the first few "notches" of the throttle had on effect, though, and I am using a Futaba T7C, so  I'll look into that as…"

"Yes, sorry.  I mis-typed that.  I can arm (verified via the red LED going sold and ARMED showing on the fake OSD/HUD in mission planner)."

"This is really mystifying.  The ESCs/motors respond in the CLI motor test (setup menu then "motors").  The throttle response seems fine in the radio calibration.  I've reloaded APM 2.9.1 onto the APM 2.5 board.  But no matter what, after I disarm I…"

"No worries . They came with the 450 kit. I would have chosen differently if buying my own parts, since they also require a BEC (but I'm using the 3DR power module for my APM 2.5)."

"DJI opto 30 amp. No calibration needed (or possible) as I read it.

They do pass the CLI setup motors test, in that they each pulse on in sequence. but I get no response from the throttle control once armed."