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Old Jan 14, 2016, 09:14 AM
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Alert
AR6410 Q receiver on sale

Horizon Hobby is having a clearance sale on the

AS6410Q DSMX 6-Channel Ultra Micro AS3X Receiver with Quad motor ESC

This is the receiver in the UMX B-17(now discontinued). It has an ESC that can control four (brushed) motors. It's selling for $29.95, which seems like a pretty decent price. Since the receiver that goes in the ultra micro Mosquito is no longer available, this seems to be the only stock Horizon receiver that can control two or more motors right off the shelf.

There is a BSD twin that used the Mosquito receiver. And people might want to build an F7F without a lot of fuss and bother with external ESCs. This would seem to be the receiver for the job.

The AS3X is a bit of a fly in the ointment: It is preset for the B-17 and it cannot be programmed, according to my chat responder from Horizon. So it's not clear what it will do to flight performance of a plane you build from scratch. And unfortunately, the AS3X cannot be turned off. Maybe one of the many experts on this forum knows how to disable. it.
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Last edited by hdowding; Jan 15, 2016 at 10:06 AM. Reason: correction
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Old Jan 14, 2016, 12:07 PM
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Are the speed controllers mixable with rudder like the DelTang dual steer? Or is it just 4 parallel controllers all looking at the throttle channel only?
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Old Jan 14, 2016, 12:39 PM
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There are four sockets in a row at the forward edge of the board. The motors just plug into these, so I'd have to think it's just four parallel controllers responding together to the throttle input. I could be wrong, of course. Horizon's chat feature gives you answers to such questions pretty quickly. And I'd try it out on my $69 B-17, but I have to open it up and replace the receiver because the motors don't rev up in unison. (Horizon said I must have a faulty ESC and sent me a new receiver. Actually, that may answer your question.)
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Old Jan 14, 2016, 12:47 PM
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Can the four sockets be paralleled into one so that, if each ESC can support a 2 amp motor say, the single paralleled socket can support 8 amps?
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Old Jan 14, 2016, 01:06 PM
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I can't see why not.
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Old Jan 14, 2016, 10:49 PM
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For the scratchier sort of scratch build project, it would be interesting to know what chips are on it - presumably a CYRF69103 implementing the radio, and either an ATmega (classic brick) or XMega (as found on the FBL helis) running the servos, ESC, and implementing AS3X. What did they end up with for a gyro sensor?

In terms of re-purposing, either of the above microcontrollers should be reflashable if you can figure out how the radio is handing over frames. Alternatively, one could take the board out of a dirt-cheap mini quadcopter like an H8mini or CX10 with the potential for 4 differential throttles, and re-purpose the LED outputs to run a couple of tiny linear servos...

So many ideas, so little time ;-) The AR6410Q is probably more solid (infamous nano CPx soldering aside) and a little lighter with what most would consider a more hobby-grade radio, on the other hand, there's been more code for re-purposing the quadcopter boards developed and published, they have 6-axis sensors, and you can put the separate servos wherever bets fits the model...
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Old Jan 15, 2016, 06:39 AM
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The HK version of a micro B17 mentions differential thrust coupled to rudder.
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Old Jan 15, 2016, 11:39 AM
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Petefoss: For what it's worth, the Horizon UMX B-17 manual, available at

https://www.horizonhobby.com/pdf/EFLU5380-Manual_EN.pdf

does not mention differential thrust. (It is the usual very basic sort of manual that Horizon provides with its RTF/BNF models.)
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Old Jan 15, 2016, 12:03 PM
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So the HK version is actually better than HH!
http://www.hobbyking.com/hobbyking/s...bind_fly_.html
{Features:
• Bind and Fly - DSM2 compatible receiver with integrated flight stabilization system
• Durable, EPO molded foam airframe
• Removable plug in landing gear
• Differential thrust linked to rudder aids in ground handling and optimal flight control
• Easy access battery hatch
• Flight stabilization can be turned on and off when using 5th channel RC transmitter
• Counter rotating propellers}
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Old Jan 15, 2016, 02:32 PM
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The ARF410Q visually has four distinct FETs - it's entirely possible that each has its own MCU output pin and when they designed it they thought they might want to do differential thrust, but decided it wasn't actually useful and so just programmed it to drive them in parallel.

It's also possible they all come from the same MCU output pin - though that would raise the question of why they use four little FETs and not one big one.
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Old Jan 15, 2016, 05:24 PM
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Quote:
Originally Posted by hdowding View Post
Petefoss: For what it's worth, the Horizon UMX B-17 manual, available at

https://www.horizonhobby.com/pdf/EFLU5380-Manual_EN.pdf

does not mention differential thrust. (It is the usual very basic sort of manual that Horizon provides with its RTF/BNF models.)
Yeah I looked there too. Don't you just love the level of detail in their manuals!
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