Reef Central Online Community

Go Back   Reef Central Online Community > General Interest Forums > Do It Yourself
Blogs FAQ Calendar Mark Forums Read

Notices

User Tag List

Reply
Thread Tools
Unread 12/07/2017, 11:01 AM   #1
Poseidon
Registered Member
 
Join Date: Nov 2002
Location: Swartz Creek
Posts: 728
Fan, Bluefish Mini, LDD 48V?

Looking for a way to get from 48v to 12v and control a fan with a bluefish mini. I've read of O2 Surplus parts, but he hasn't been active for a while, so looking for other options.

I have LDD's, and a driver from BlueAcro, along with a 48v Meanwell power supply.

Thanks for any options you know of.

-Mike


__________________
Just say no to CRABS!

Current Tank Info: 85 Gallon mixed Reef. Halide/LED combo lighting.
Poseidon is offline   Reply With Quote
Unread 12/07/2017, 11:05 AM   #2
mcgyvr
Registered Member
 
mcgyvr's Avatar
 
Join Date: Sep 2003
Location: North Carolina
Posts: 20,050
Plenty of DC-DC converters out there..
Or just get another 12V supply for the fan itself...
Or get a 48VDC fan..


__________________
Who me?
mcgyvr is offline   Reply With Quote
Unread 12/07/2017, 11:13 AM   #3
Poseidon
Registered Member
 
Join Date: Nov 2002
Location: Swartz Creek
Posts: 728
Thanks, trying to avoid another outlet if possible. I bought a DC to DC converter from Fleabay a while back, it is no longer working. Was hoping for something similar to my LDD board with a step down built in.

Didn't know there was a 48v fan option, guess I better get shopping...


__________________
Just say no to CRABS!

Current Tank Info: 85 Gallon mixed Reef. Halide/LED combo lighting.
Poseidon is offline   Reply With Quote
Unread 12/07/2017, 11:16 AM   #4
oreo57
Registered Member
 
Join Date: Apr 2013
Posts: 1,793
https://www.rapidled.com/ldd-h-4s-driver-board/

Add the "step down"........... Socket for it..


oreo57 is offline   Reply With Quote
Unread 12/07/2017, 11:26 AM   #5
Poseidon
Registered Member
 
Join Date: Nov 2002
Location: Swartz Creek
Posts: 728
Thanks! That is what I was looking for, I just didn't get to the right LED shop.


__________________
Just say no to CRABS!

Current Tank Info: 85 Gallon mixed Reef. Halide/LED combo lighting.
Poseidon is offline   Reply With Quote
Unread 12/18/2017, 02:03 PM   #6
mrbfaust
Registered Member
 
Join Date: Jan 2011
Location: Milwaukee, WI
Posts: 9
Controlling Fan?

I actually just bought that board myself for this exact same setup. Curious if anyone has a way to put the fans on a timer? As of now, they run constantly...

I was hoping to run a relay off the bluefish channel, but the pwm only puts out 4ma which isn't enough to any relay I've found.

Is there a way to add a timer function to this??


mrbfaust is offline   Reply With Quote
Unread 12/18/2017, 03:30 PM   #7
Poseidon
Registered Member
 
Join Date: Nov 2002
Location: Swartz Creek
Posts: 728
Bought that board, made a dumb mistake, plugged my Mini in to 48v. The smoke came out of the mini, and is fried. New one on the way...

As for controlling the fan, I didn’t see a way to do that with this setup, it’s just on at 100% as long as power is on.


__________________
Just say no to CRABS!

Current Tank Info: 85 Gallon mixed Reef. Halide/LED combo lighting.
Poseidon is offline   Reply With Quote
Unread 12/18/2017, 04:09 PM   #8
oreo57
Registered Member
 
Join Date: Apr 2013
Posts: 1,793
wiring in a thermal resistor shouldn't be much of a problem..Will get you a variable speed fan (by voltage drop)
Details above my paygrade..

Probably easier ways..

https://electronics.stackexchange.co...controlled-fan

More info:
http://projectschematic.blogspot.com...and-tl082.html

simple snap switches (like on a furnace) will at least get you on/off

Should be some Chinese parts out there ..
would need 4 wire computer fans..

https://www.ebay.com/itm/12V-PC-CPU-...4383.l4275.c10



Last edited by oreo57; 12/18/2017 at 05:11 PM.
oreo57 is offline   Reply With Quote
Reply

Thread Tools

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 On



All times are GMT -6. The time now is 02:15 AM.


Powered by vBulletin® Version 3.8.4
Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.
Powered by Searchlight © 2024 Axivo Inc.
Use of this web site is subject to the terms and conditions described in the user agreement.
Reef CentralTM Reef Central, LLC. Copyright ©1999-2022
User Alert System provided by Advanced User Tagging v3.3.0 (Pro) - vBulletin Mods & Addons Copyright © 2024 DragonByte Technologies Ltd.