Trim button as momentary switches

I have a stock transmitter that uses trim buttons for the camera gimbal. Press and hold trim+ gives an output of 100 whilst press and hold trim- brings output to -100. When trim is released the output is 0.

On my Devo10 I set trim+ and trim- with step=100 such that the output will toggle between 100, 0, -100. This means I need to press the trim button once to bring output to 0 when the previous output is either 100 or -100.

I try to mimic the stock transmitter operation on Devo10 but in vain. When the trims are set as momentary switches the output is 100 when on but -100 when off. Is there any way to bring the output to 0 when off?

Try scale ? Or offset ?

Nitro_123 wrote: Try scale ? Or offset ?

I can apply a mixer to bring -100 to 0 but I need another mixer to keep 100 unchanged. The problem is that the trim button cannot be used as a switch to choose the mixer.

vlad_vy wrote: Input = needed channel (ex. Ch6)
Trim Step = 100
Trim - = TRIM L-
Trim + = TRIM L+
Switch = None

Sorry but I don't get it. I am unsure if I describe my problem clearly. Here is my Devo10 configuration:

[channel12]
template=simple
[mixer]
src=virt1
dest=ch12
[trim1]
src=virt1
pos=TRIM_L+
neg=TRIM_L-
step=100
value=0,0,0

I wish ch12 output is 0 when I release the trim buttons instead of one more press.

Still struggling and I may just give it up.

iirc there's a section in this doc on using trims as switches.

Thanks for that. I suppose I have succeeded, here is the new configuration yet a lot more complicated than my last one:

[channel12]
template=complex
[mixer]
src=Virt1
dest=Ch12
usetrim=0
curvetype=greater-than-0
points=0
[mixer]
src=!Virt2
dest=Ch12
usetrim=0
muxtype=add
curvetype=less-than-0
points=0

[virtchan1]
template=complex
[mixer]
src=Virt1
dest=Virt1
scalar=0

[virtchan2]
template=complex
[mixer]
src=Virt2
dest=Virt2
scalar=0

[trim1]
src=Virt1
pos=TRIMLV+
step=193
value=-100,0,0

[trim2]
src=Virt2
pos=TRIMLV-
step=193
value=-100,0,0