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Virtual channels with throttle hold
- mikeage
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						04 Jan 2014 18:54				#17946
		by mikeage
	
	
		
			
	
	
			
			 		
	
												
	
				Virtual channels with throttle hold was created by mikeage			
			
				Hi,
I'm trying to set up a proportional countdown timer for my MQX on my 7E. I believe the attached model file should do it, but it seems to not recognize the sticky throttle hold I have set up.
If I look at the output of Ch1 in the big-box, it correctly reflects the throttle being sent (linear for THR, unless HOLD1 is set or it wasn't returned to 0. However, for the timer, I need a mapping of 0-100, which I have on Virt5. However, Virt5 seems to ignore the value of the hold setting, even though I have it looking at Ch1 and not THR. (this is DSM2/X, so it's Ch1 and not Walkera's Ch3)
Any ideas?
					I'm trying to set up a proportional countdown timer for my MQX on my 7E. I believe the attached model file should do it, but it seems to not recognize the sticky throttle hold I have set up.
If I look at the output of Ch1 in the big-box, it correctly reflects the throttle being sent (linear for THR, unless HOLD1 is set or it wasn't returned to 0. However, for the timer, I need a mapping of 0-100, which I have on Virt5. However, Virt5 seems to ignore the value of the hold setting, even though I have it looking at Ch1 and not THR. (this is DSM2/X, so it's Ch1 and not Walkera's Ch3)
Any ideas?
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- vlad_vy
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						05 Jan 2014 02:29				#17960
		by vlad_vy
	
	
		
			
	
			
			 		
	
												
	
				Replied by vlad_vy on topic Virtual channels with throttle hold			
			
				If you use channel safety for throttle hold, it will be. You can try to use throttle hold at last page of complex mixer for throttle. Mux=replace, switch=Hold switch, curve=Fixed, scale=-100.			
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- mikeage
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						05 Jan 2014 02:34				#17961
		by mikeage
	
	
		
			
	
			
			 		
	
												
	
				Replied by mikeage on topic Virtual channels with throttle hold			
			
				are you saying that virtual channels don't use the actual value of the channel, but only the one before the hold is applied (I wonder if this applies to subtrim as well)?
Is this documented anywhere?
					Is this documented anywhere?
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- vlad_vy
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						05 Jan 2014 02:38				#17962
		by vlad_vy
	
	
		
			
	
			
			 		
	
												
	
				Replied by vlad_vy on topic Virtual channels with throttle hold			
			
				I don't know, we need ask PB about this.			
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- yidc
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						05 Jan 2014 06:00				#17967
		by yidc
	
	
		
			
	
			
			 		
	
												
	
				Replied by yidc on topic Virtual channels with throttle hold			
			
				mikeage,
As you can see from my post before: http://www.deviationtx.com/forum/how-to/1670-how-to-change-thr-display-value#17800
I also have the same problem as yours i.e. virtual channel ignores the safety switch
					As you can see from my post before: http://www.deviationtx.com/forum/how-to/1670-how-to-change-thr-display-value#17800
I also have the same problem as yours i.e. virtual channel ignores the safety switch
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- PhracturedBlue
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						05 Jan 2014 07:12		 -  05 Jan 2014 07:12		#17969
		by PhracturedBlue
	
	
		
			
	
	
			 		
	
												
	
				Replied by PhracturedBlue on topic Virtual channels with throttle hold			
			
				limits are applied after all mixers are evaluated.  so you cannot use a safety on the 'Limits' page and feed that into a mixer.   This is even true when channels are used as inputs to a mixer.
If you want a safety and to be able to feed the output to another mixer, define a complex limit and add the sit as a switch instead.
					If you want a safety and to be able to feed the output to another mixer, define a complex limit and add the sit as a switch instead.
		Last edit: 05 Jan 2014 07:12  by PhracturedBlue.			
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- mikeage
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						05 Jan 2014 07:22				#17970
		by mikeage
	
	
		
			
	
			
			 		
	
												
	
				Replied by mikeage on topic Virtual channels with throttle hold			
			
				Thanks. I'll use a complex mixer instead (are there any downsides to implementing TH that way, rather than via the limits?)			
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						05 Jan 2014 15:46		 -  05 Jan 2014 15:47		#17989
		by PhracturedBlue
	
	
		
			
	
	
			 		
	
												
	
				Replied by PhracturedBlue on topic Virtual channels with throttle hold			
			
				there are caveats to using a mixer-switch for throttle hold.  basically you need to be careful about how trims are applied (so they don't get applied when the switch is on (though you don't usually use trims with throttle).  You also need to be careful using subtrims since those apply after all mixing and would affect your throttle-hold as well.			
					
		Last edit: 05 Jan 2014 15:47  by PhracturedBlue.			
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				 - Virtual channels with throttle hold