Go Back  RCU Forums > Electric Aircraft Universe > Electric Training
Reload this Page >

Quick Help Needed! Futaba Receiver Power Connection Question

Electric Training If you are new to electric learn more about them here or ask questions.

Quick Help Needed! Futaba Receiver Power Connection Question

Reply

Old 12-26-2006, 04:30 PM
  #1  
markind
Senior Member
Thread Starter
 
markind's Avatar
 
Join Date: Nov 2006
Location: San Jose, CA
Posts: 458
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default Quick Help Needed! Futaba Receiver Power Connection Question

Hi there, I'm working on my first electric plane (Multiplex MiniMag) and I have a Q on the LiPo-to-Receiver Connection.

I was told that the Receiver can be powered by the main LiPo battery pack, so its not necessary to have a separate battery (like the 4-AA pack that came with the Receiver) to run the Receiver and Servos.

How is this done? I can't see how to do it from the ESC diagram or any of the Futaba manuals...

Thanks in advance for the quick help!

I wanna make sure before I power it up! I am close to my first live motor test!

~mArK
markind is offline  
Reply With Quote
Old 12-26-2006, 05:21 PM
  #2  
markind
Senior Member
Thread Starter
 
markind's Avatar
 
Join Date: Nov 2006
Location: San Jose, CA
Posts: 458
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Quick Help Needed! Futaba Receiver Power Connection Question

Well, it looks like the Receiver draws its power from the Throttle Channel connection that goes to the ESC.

Can someone confirm? Thanks!
markind is offline  
Reply With Quote
Old 12-26-2006, 06:16 PM
  #3  
jdetray
Senior Member
 
jdetray's Avatar
 
Join Date: Dec 2004
Location: Napoleon, OH
Posts: 1,617
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Quick Help Needed! Futaba Receiver Power Connection Question

Hi Mark-

You have it correct. Plug the battery into the ESC. Then plug the ESC into the throttle channel on the receiver (usually channel 3).

The ESC contains a battery eliminator circuit (BEC) that regulates the lipo voltage to a level that is safe for the receiver and servos.

This assumes that your ESC has a BEC, of course! Most of them do.

- Jeff
jdetray is offline  
Reply With Quote
Old 12-26-2006, 06:20 PM
  #4  
scoooper
Senior Member
 
scoooper's Avatar
 
Join Date: Jun 2006
Location: crawfordville, FL
Posts: 279
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Quick Help Needed! Futaba Receiver Power Connection Question

mARKIND:Batt to ESC, esc TO RECEIVER YOUR BUB SCOOOPER
Attached Thumbnails Click image for larger version

Name:	Nl30373.jpg
Views:	68
Size:	55.0 KB
ID:	583998  
scoooper is offline  
Reply With Quote
Old 12-26-2006, 06:30 PM
  #5  
markind
Senior Member
Thread Starter
 
markind's Avatar
 
Join Date: Nov 2006
Location: San Jose, CA
Posts: 458
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Quick Help Needed! Futaba Receiver Power Connection Question

Confirmed!! Thanks it works!! The servos work, but I think there is not enough charge in the LiPo to get the motor running. I will charge it and then my first live motor test should work!

The LEDs on the ESC are off which indicates "Cutoff" and when I give full throttle stick it flashes red LED indicating "Reset". Should be ready to go after the LiPo is charged!

~m
markind is offline  
Reply With Quote
Old 12-26-2006, 11:26 PM
  #6  
scoooper
Senior Member
 
scoooper's Avatar
 
Join Date: Jun 2006
Location: crawfordville, FL
Posts: 279
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Quick Help Needed! Futaba Receiver Power Connection Question

THATS GREAT! XMAS IS SAVED, HOW BOUT SOME PIXS WHEN YOU GET HER GO'IN, YOUR BUB, SCOOOPER
Attached Thumbnails Click image for larger version

Name:	Jg14124.jpg
Views:	34
Size:	98.5 KB
ID:	584196  
scoooper is offline  
Reply With Quote
Old 12-26-2006, 11:34 PM
  #7  
markind
Senior Member
Thread Starter
 
markind's Avatar
 
Join Date: Nov 2006
Location: San Jose, CA
Posts: 458
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Quick Help Needed! Futaba Receiver Power Connection Question

My first ever RC electric motor test PASS!!!

boy, I got a bit of a shock though when it became clear I had go into the radio and REVERSE channel 3 Throttle!!

Ack!!! I had the stick all the way down and the motor is ripping at full speed and I thought Uh Oh but then I moved the stick up and the motor was under control!!

Unfortunately, during the not totally unexpected burst to full throttle the propeller flew off!! [:@] Ack!! [:@] I am glad it did no damage... and the prop itself seems fine. I had the prop glued down with epoxy as I saw in the assembly video, but I guess it was the wrong stuff... [&:]

After unplugging (YES! I used Dean's Ultra Plugs! Worth the extra buck!) the LiPo I went into the radio (7CAP) and Reversed the Throttle channel. Now it all works like a champ!

Two problems remain:

I have set up for Flaperons. Everthing seems fine but the Left Aileron (Channel 6) moves with too much swing compared with the Right Aileron.

Also, it took maximum Sub Trim to get the 'default' stick-centered condition with flat (zero) Ailerons for both Left and Right.

And, when I turn the dial, (Channel 6 also) I can see the Flaperon effect working, but again it is too much swing on the Left Aileron (again Channel 6 - its what I figured it should be based on the manual).

Mechanically, everything looks dialed in.

This may not be the right forum to get help with these issues, I will copy to another that may be. Still, I will check here for any help offered.

T H AN K S!!

~mArK
markind is offline  
Reply With Quote
Old 12-26-2006, 11:38 PM
  #8  
markind
Senior Member
Thread Starter
 
markind's Avatar
 
Join Date: Nov 2006
Location: San Jose, CA
Posts: 458
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Quick Help Needed! Futaba Receiver Power Connection Question

Great pic Scoooper Bub!! You guys look like look like an air show ready to happen!

How do I attach a pic? I will take one of my soon to be famous MiniMag!!
markind is offline  
Reply With Quote
Old 12-27-2006, 12:55 AM
  #9  
markind
Senior Member
Thread Starter
 
markind's Avatar
 
Join Date: Nov 2006
Location: San Jose, CA
Posts: 458
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Quick Help Needed! Futaba Receiver Power Connection Question

Got it figured out! Here is my hopefully soon to be flying MiniMag:
Attached Thumbnails Click image for larger version

Name:	Ig12229.jpg
Views:	32
Size:	84.6 KB
ID:	584248   Click image for larger version

Name:	Mh19332.jpg
Views:	22
Size:	85.0 KB
ID:	584249   Click image for larger version

Name:	Qv54049.jpg
Views:	28
Size:	75.3 KB
ID:	584250   Click image for larger version

Name:	Bv59532.jpg
Views:	28
Size:	86.9 KB
ID:	584251  
markind is offline  
Reply With Quote

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