Notices
RC Radios, Transmitters, Receivers, Servos, gyros Discussion all about rc radios, transmitters, receivers, servos, etc.

Pulse width question

Old 09-29-2015, 06:00 AM
  #1  
rva1945
Thread Starter
 
Join Date: Nov 2005
Location: Buenos Aires, ARGENTINA
Posts: 629
Likes: 0
Received 0 Likes on 0 Posts
Default Pulse width question

I have this question: in normal mode, when pushing the throttle (all the way up), will the pulse width be at its minimum (around 1ms) or maximum value (around 2ms)?

The same question for the steering stick: at full left, will it be 1ms or 2ms?

When programming microcontrollers including a calibration set of instruccions, I suspect that some transmitters don't "follow the rules".

Thanks,
Robert
Old 09-29-2015, 06:19 AM
  #2  
grotto2
My Feedback: (2)
 
grotto2's Avatar
 
Join Date: Feb 2003
Location: Palm Bay, FL
Posts: 1,046
Likes: 0
Received 0 Likes on 0 Posts
Default

This is why transmitters have had the channel reverse feature for the past 30 years. There's no standard.
Old 09-30-2015, 09:57 AM
  #3  
BarracudaHockey
My Feedback: (11)
 
BarracudaHockey's Avatar
 
Join Date: Jul 2003
Location: Jacksonville, FL
Posts: 25,401
Received 161 Likes on 129 Posts
Default

It's manufacturer dependent, some go one way, some go the other
Old 09-30-2015, 10:59 AM
  #4  
AndyKunz
 
Join Date: Jun 2005
Location: White Heath, IL
Posts: 2,968
Likes: 0
Received 15 Likes on 14 Posts
Default

It depends on the brand what the defaults are, and it depends on the reversing switch for what it is in this particular model memory.

For Spektrum and JR, the default throttle pulse is narrow with the stick at the bottom. Most ESCs are programmed this way. Futaba, otoh, has a wide pulse at the bottom. For them to use most ESCs, they need to reverse the throttle servo direction.

The Spektrum and JR default movements are the same for compatibility with one another. Right Aileron = short pulse, Up Elevator = short pulse, Right Rudder = short pulse.

Next item: Servos go both ways too...

Andy

Same as here: http://www.rcgroups.com/forums/showthread.php?t=2512068

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off


Thread Tools
Search this Thread

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service - Do Not Sell My Personal Information -

Copyright 2021 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.