How many pulses per rotation should I have on my encoders

[Braeden108]

I'm working on a project where I'm using encoders to tune radios. Specifically the M2000 Ka-50 and Uh-1 if that matters.

 

I'm wondering how many pulses I should have per rotation on these encoders. I really have no idea.

Also incremental encoders are the ones to use yeah?

[FragBum]

I take it you mean for setting the frequency?

 

I can't say specifically for the radios you mention but radios I have had experience with, where like *10 steps (pulses) for MMM.KKK.HH(H) so you effectively set each decade value by selecting the numerical value 0 to 9 which was 1 shaft revolution which seems to be how it works on the FM and UHF radios on the centre console of the Huey (DCS2)

 

*less steps for 100MHz steps as that was usually limited to something like 1 to 3 depending on radio set.

 

You could use either rotary optical encoders or maybe BCD encoded switches depending on your interface.

 

HTH

[Braeden108]

Ahhhh of course a base 10 radix should have a 10 pulse encoder.

 

Thanks FragBum (I thought your name was FragBurn, FragBum is hilarious.)

[Brewnix]

HI Braeden108, So i put together a small 3 econder panel with mmjoy to chg freq's in the a10 radios. I bought these encoders.

http://www.ebay.com/itm/5Pcs-5-Terminals-20-Detents-Points-360-Degree-Rotary-Encoder-Push-Button-Switch-/321900634079?hash=item4af2c5dfdf:g:RtMAAOSwnbZYFH0h

When you spin one click simulates a button press. So spin left would be Button 1 and spin right would be Button 2. and one click is one number at a time on the radio. I had to set the timer on how long mmjoy held the activation of the "on" state.

Just curious what USB controller you using?

[Braeden108]

I had to set the timer on how long mmjoy held the activation of the on state.

Just curious what USB controller you using?

 

Thanks for the info, I will definitely keep the above in mind when testing. One of those things that's great to know before hand because I doubt I'd know to look that kind of thing up.

 

So I was thinking going with ~10 pulses per rev. I see you have 20, do you find it a little tricky to be precise with them or do you find yourself really cranking on them trying to get it dialed in?

[JG14_Smil]

Number of pulses almost doesn't matter, so if you can only get encoders with 20 pulses go ahead and use them. DCS just sees and uses it as a single button pulse that repeats. Lua can be edited for the amount each button pulse affects the sim (in many cases). So in regards to DCS, it doesn't matter. To you and how you want it to feel.. that's another matter.

 

More pulses does not equal more precise (in DCS). Lua sets precision.

 

great luck on your build.

Edited December 17, 2016 by JG14_Smil