User Info

 
 
Welcome, Guest. Please login or register.
Did you miss your activation email?

MultiRotorUK ShoutBox

Refresh History
  • Bad Raven: I would'nt know but obviously you have had the experience.....  :evil
    June 17, 2018, 13:08:09
  • shawdreamer: his boyfriend couldnt wait..... :whistling:
    June 17, 2018, 11:58:37
  • hoverfly: Keckon, is usually the result of typing with your mouth full. :whistling:
    June 16, 2018, 16:37:24
  • Bad Raven: Keckon???  Where did THAT come from??
    June 16, 2018, 16:13:17
  • Bad Raven: I keckon you have bootleg Domino's................  And HF , I ALWAYS give a tip, it's "don't upset me"....
    June 16, 2018, 16:08:46
  • DarkButterfly: Not sure why they're different colours :laugh:
    June 16, 2018, 13:19:02
  • hoverfly: Blue boxes are used to indicate to the delivery bloke they won't get a tip at that house.. :laugh:
    June 16, 2018, 09:07:42
  • Bad Raven: And on another more important matter, wny is your domino's box red, ours are blue!!!   :blink :laugh:
    June 16, 2018, 05:47:01
  • Bajadre: :laugh:
    June 15, 2018, 23:47:19
  • DarkButterfly: :laugh:
    June 15, 2018, 22:41:37
  • shawdreamer: oh it'll fly...... like a piece of 5hit with a big arse motor attached..... but it'll fly :laugh:
    June 15, 2018, 22:25:24
  • hoverfly: Superb,  :rofl:
    June 15, 2018, 22:14:50
  • DarkButterfly: :smiley:
    June 15, 2018, 21:02:23
  • DarkButterfly: Need to get some electronics on this and see if it flies [link]
    June 15, 2018, 21:02:14
  • atomiclama: I used the solder ones [link] as I do't have a crimp tool and should be able to reuse the connector if required
    June 15, 2018, 14:50:33
  • VaNDAL_UK: Nice one. I'm gonna go for it. just looking for the SMA connectors with the crips as Ive had a few break at the root.
    June 15, 2018, 14:44:53
  • atomiclama: these are my first attempts, got better since then [link]
    June 15, 2018, 10:57:11
  • atomiclama: Yeah could've got mine cheaper but wanted it in reasonable time. Go for it, It's rewarding to see something you have made yourself.
    June 15, 2018, 10:54:38
  • VaNDAL_UK: atomiclama: I was pricing up the cable 0.08 copper wire and SMA connectors came out to about £15 and I could have made 5 meters worth of antennas!
    June 15, 2018, 10:31:48
  • hoverfly: Betaflight RC1...Interesting  if you go to the O.S.D  settings and then change the font  by lining up the icons in the correct precise order then hit  enter,...... It opens up the  O.C.D.  screen. :smiley:
    June 15, 2018, 09:01:13

Who's Online

  • Dot Guests: 70
  • Dot Hidden: 0
  • Dot Users: 0

There aren't any users online.

Theme Selection



Forum Default

Permanently

Author Topic: Pdb supplies  (Read 1252 times)

Offline trebor

  • Old boy
  • Trade Count: (0)
  • Sr. Member
  • ****
  • Posts: 658
  • Liked: 122
  • Country: england
Pdb supplies
« on: April 17, 2017, 10:04:05 »
I have one of these Menace Rc PDB XT60 5V 12V Power Board http://menacerc.co.uk/product/pdb-xt60-5v-12v-power-board-pcb
Now I need to run from the 5v a Fc, Microminiosd, 2 small 9g servos. Not sure what the servos pull but am I asking too much ? I don';t even know how much the 5v board will handle. Will I be ok or should I get another 5v reg ?

Offline pheasant_plucker

  • Global Moderator
  • Trade Count: (0)
  • Sr. Member
  • *****
  • Posts: 571
  • Liked: 151
  • Country: england
  • I'm a ******!
    • RCModelFlyers (RCMF)
Re: Pdb supplies
« Reply #1 on: April 17, 2017, 12:47:01 »
They don';t provide enough information about the regulators specifications. Can you read the numbers off the regulator chips on the one you have?
A fu?l sizero standard servo can draw 1 amp when stalled. A 5g should be nowhere near this.

Gerry
The man serving me in the canteen said "Look, You can see the face of Jesus in the Margarine" The Asian guy next to me replied "I can't believe it's not Budda"
http://www.namfc.co.uk/pictures/fly.gif

Offline dirtyharry

  • Trade Count: (0)
  • Sr. Member
  • ****
  • Posts: 645
  • Liked: 191
  • Country: gb
Re: Pdb supplies
« Reply #2 on: April 17, 2017, 13:05:59 »
I';d guess your pulling around 1a in total. The components will probably take it but they will also get hot.

Its a linear voltage regulator so any extra voltage has to be "burnt off". On 4s your going to roughly have a 10w heater slowly cooking away, wouldn';t last long in a foamy plane but may be ok in a quad.




Offline trebor

  • Old boy
  • Trade Count: (0)
  • Sr. Member
  • ****
  • Posts: 658
  • Liked: 122
  • Country: england
Re: Pdb supplies
« Reply #3 on: April 17, 2017, 13:57:36 »
It';s on a foam flying wing running a 3s battery so I don';t want it to get too hot !! You got me worried now 😀

Offline dirtyharry

  • Trade Count: (0)
  • Sr. Member
  • ****
  • Posts: 645
  • Liked: 191
  • Country: gb
Re: Pdb supplies
« Reply #4 on: April 17, 2017, 15:48:50 »
I just use a regular bec on a wing , their very reliable and can run at 2A+ all day without any heat issues.

Any 12v stuff like  camera/tx run direct from the 3s battery , if you get video interference lines use a ferrite ring and capacitor.

http://www.ebay.co.uk/itm/3A-UBEC-5V-6V-Full-Shielding-Antijamming-Switching-DC-DC-Regulator-New-UG-/122450479235?hash=item1c829e0883:g:hxkAAOSw~OVWvy3a

Offline trebor

  • Old boy
  • Trade Count: (0)
  • Sr. Member
  • ****
  • Posts: 658
  • Liked: 122
  • Country: england
Re: Pdb supplies
« Reply #5 on: April 17, 2017, 17:08:35 »
They don';t provide enough information about the regulators specifications. Can you read the numbers off the regulator chips on the one you have?

Gerry
From what I can see it looks like :- m8mosb    gk142549

Not being electroniclly trained but what';s the difference between this voltage regulator and the Bec ?

Offline dirtyharry

  • Trade Count: (0)
  • Sr. Member
  • ****
  • Posts: 645
  • Liked: 191
  • Country: gb
Re: Pdb supplies
« Reply #6 on: April 17, 2017, 20:23:00 »
a linear one ( like you';ve got ) is like a restriction in the wire , it burns off the excess to give a nice smooth output. It often needs a heat sink.

The switching Regulator I linked to works by chopping up the electrickery and glues it back together at a lower voltage , very efficient + cool but noisy. The noise can be removed with capacitors/ferrite rings and a shield ( like the one I linked to already has)

Offline trebor

  • Old boy
  • Trade Count: (0)
  • Sr. Member
  • ****
  • Posts: 658
  • Liked: 122
  • Country: england
Re: Pdb supplies
« Reply #7 on: April 17, 2017, 20:25:07 »
Thanks for that, learnt another lesson ! 👍

Offline Hozza

  • Global Moderator
  • Trade Count: (2)
  • Sr. Member
  • *****
  • Posts: 839
  • Liked: 270
  • Country: gb
  • Meh!
Re: Pdb supplies
« Reply #8 on: April 18, 2017, 10:22:18 »
The voltage regulators on the Menace PDB are 0.5amp

Offline trebor

  • Old boy
  • Trade Count: (0)
  • Sr. Member
  • ****
  • Posts: 658
  • Liked: 122
  • Country: england
Re: Pdb supplies
« Reply #9 on: April 18, 2017, 10:29:30 »
Oh heck ! I wish I could plan these builds better 😢

Offline trebor

  • Old boy
  • Trade Count: (0)
  • Sr. Member
  • ****
  • Posts: 658
  • Liked: 122
  • Country: england
Re: Pdb supplies
« Reply #10 on: April 18, 2017, 10:57:01 »
Maybe I should use this as its rated at 5v / 3amp. Then all I would need is a 12 reg for my vtx and camera supply in case I put a 4s in.

Offline Hozza

  • Global Moderator
  • Trade Count: (2)
  • Sr. Member
  • *****
  • Posts: 839
  • Liked: 270
  • Country: gb
  • Meh!
Re: Pdb supplies
« Reply #11 on: April 18, 2017, 11:03:42 »
http://www.hobbyrc.co.uk/matek-hubosd-eco-h-type-pdb

I';m putting one of these on my S800 all the power I need and I like the idea of seeing the mAh used to I can maximize my flight time.

Offline trebor

  • Old boy
  • Trade Count: (0)
  • Sr. Member
  • ****
  • Posts: 658
  • Liked: 122
  • Country: england
Re: Pdb supplies
« Reply #12 on: April 18, 2017, 12:39:07 »
That looks like a good idea, my plans fell short twice now. I got one of these http://www.hobbyrc.co.uk/frsky-xsrf3e-f3evo-flight-controller-eu-lbt
Thought I';d keep things to a minimum but the pin connections are tiny I might have been better just getting a naze32. I have a spare Microminiosd so I';m going to use it to get rid of it from my box of bits. Trouble is there is so much to chose from now it';s doing my head in. 😄

Offline trebor

  • Old boy
  • Trade Count: (0)
  • Sr. Member
  • ****
  • Posts: 658
  • Liked: 122
  • Country: england
Re: Pdb supplies
« Reply #13 on: April 20, 2017, 11:59:25 »
http://www.hobbyrc.co.uk/matek-hubosd-eco-h-type-pdb

I';m putting one of these on my S800 all the power I need and I like the idea of seeing the mAh used to I can maximize my flight time.

Do you need a special config tool for that osd ? Would you be able to use an Ftdi tool or can you get to it through cleanflight / base flight. Only asking as I';m a numpty 🤔

Offline Cheredanine

  • Trade Count: (0)
  • Hero Member
  • *****
  • Posts: 4650
  • Liked: 1173
  • Country: gb
  • Cleverly disguised as a responsible adult
Re: Pdb supplies
« Reply #14 on: April 20, 2017, 13:27:17 »
You can ask mike at hobbyrc but pretty sure the matek hubs all use minims which will mean you need an ftdi adaptor

Offline trebor

  • Old boy
  • Trade Count: (0)
  • Sr. Member
  • ****
  • Posts: 658
  • Liked: 122
  • Country: england
Re: Pdb supplies
« Reply #15 on: April 20, 2017, 15:51:26 »
Cheers, one day I might know what I';m doing 😄

Offline Hozza

  • Global Moderator
  • Trade Count: (2)
  • Sr. Member
  • *****
  • Posts: 839
  • Liked: 270
  • Country: gb
  • Meh!
Re: Pdb supplies
« Reply #16 on: April 20, 2017, 16:23:01 »
You can ask mike at hobbyrc but pretty sure the matek hubs all use minims which will mean you need an ftdi adaptor

I use one of these as my FTDI didn';t work, different chip I believe
www.banggood.com/CJMCU-CP2102-USB-To-TTLSerial-Module-UART-STC-Downloader-p-970993.html

and all the info on the OSD is here: http://www.stosd.com/

Offline trebor

  • Old boy
  • Trade Count: (0)
  • Sr. Member
  • ****
  • Posts: 658
  • Liked: 122
  • Country: england
Re: Pdb supplies
« Reply #17 on: April 20, 2017, 18:16:52 »
I got a Ftdi confi thingy for the Microminiosds, sod it more stuff to buy !!  Just had a look, USB ttl adaptor seems similar to the Ftdi thingy but maybe not.
« Last Edit: April 20, 2017, 18:28:11 by trebor »