Mandalorian Mercs Costume Club

Mandalorian Armor => Equipment & Accessories => Electronics => Topic started by: Greydogtech on Mar 09, 2017, 09:18 AM

Title: Will cellphone battery pack work?
Post by: Greydogtech on Mar 09, 2017, 09:18 AM
Have a question I want to put fans in my helmet that are 5 volts and have a battery pack for cellphone that has two usb ports that are 5 volts,do i need to do anything else to it to make it work so I don't fry the fans and will it power them.I know it's for charging a phone but was wondering.
Title: Re: Will cellphone battery pack work?
Post by: Fi-8015 on Mar 09, 2017, 10:40 AM
Works very well together, just solder a USB-Plug to your fans and you are ready to go.
Title: Re: Will cellphone battery pack work?
Post by: Greydogtech on Mar 09, 2017, 11:21 AM
Works very well together, just solder a USB-Plug to your fans and you are ready to go.
That's great ,I was hoping it was going to be that easy,I have another question on the usb cord 3 to 4 wires which ones are the positive and negative or are the color coded red and black?
Title: Re: Will cellphone battery pack work?
Post by: Syko Voss on Mar 09, 2017, 12:56 PM
Cellphone battery pack works a treat!  This is the two fan set ups I put together for our helmets.

(http://i725.photobucket.com/albums/ww258/simorph/IMG_0085_zps63cffjpo.jpg) (http://s725.photobucket.com/user/simorph/media/IMG_0085_zps63cffjpo.jpg.html)

If I remember (few months ago now) I Googled on the colour coding for which colour wires do what.

https://turbofuture.com/computers/Color-Coded-Wire-inside-the-USB (https://turbofuture.com/computers/Color-Coded-Wire-inside-the-USB)

And to test everything before plugging into the battery pack, I just used a cell phone charger that outputs 5V to double-check I'd gotten it right.

Really easy, cost peanuts in comparison to buying a pre-made fan set up.

Best of luck!
Title: Re: Will cellphone battery pack work?
Post by: Greydogtech on Mar 09, 2017, 06:59 PM
Cellphone battery pack works a treat!  This is the two fan set ups I put together for our helmets.
Ok thdo you have diagram so anks,I do have another question about the on/off switch hook up,when adding switch
(http://i725.photobucket.com/albums/ww258/simorph/IMG_0085_zps63cffjpo.jpg) (http://s725.photobucket.com/user/simorph/media/IMG_0085_zps63cffjpo.jpg.html)

If I remember (few months ago now) I Googled on the colour coding for which colour wires do what.

https://turbofuture.com/computers/Color-Coded-Wire-inside-the-USB (https://turbofuture.com/computers/Color-Coded-Wire-inside-the-USB)

And to test everything before plugging into the battery pack, I just used a cell phone charger that outputs 5V to double-check I'd gotten it right.

Really easy, cost peanuts in comparison to buying a pre-made fan set up.

Best of luck!
Thanks, I do have a question is this the way it should be hooked up with the switch?
(http://i1332.photobucket.com/albums/w609/Matt_Pinkley/20170309_184827_zpsxqwd5yuz.jpg) (http://s1332.photobucket.com/user/Matt_Pinkley/media/20170309_184827_zpsxqwd5yuz.jpg.html)
Title: Re: Will cellphone battery pack work?
Post by: Syko Voss on Mar 10, 2017, 03:16 AM
Nope - if you connect the switch like that you're creating a loop between the battery terminals.
Connect it vertically in your diagram - so it breaks only the left positive wire or the right negative wire.
All the switch needs to do is open/close one of the lines from the battery into the rest of the circuit.
One tip I found useful - blobs of hot glue over the solder/exposed wire areas make it so much easier to guarantee you don't get short circuits when you're bundling it all up to fit in the helmet.
(Oh, and I attached the fans to the helmet with bits of Velcro - so much easier to adjust when trying to get the airflow right)
Title: Re: Will cellphone battery pack work?
Post by: Greydogtech on Mar 11, 2017, 10:19 AM
Okay have another question will thus work for adjusting the speed for my fans they are 5volt as is the battery pack.
(http://i1332.photobucket.com/albums/w609/Matt_Pinkley/Screenshot_2017-03-11-10-07-13_zps5xeatnub.png) (http://s1332.photobucket.com/user/Matt_Pinkley/media/Screenshot_2017-03-11-10-07-13_zps5xeatnub.png.html)
Title: Re: Will cellphone battery pack work?
Post by: Syko Voss on Mar 11, 2017, 10:35 AM
Not sure, myself.  I'd get the basics wired up and try that first - running two fans off one USB you might find you don't really need to regulate the speed. (I didn't)
Title: Re: Will cellphone battery pack work?
Post by: Greydogtech on Mar 11, 2017, 11:04 AM
Here's my battery pack its 4"x 2 1/2"x 3/4"
(http://i1332.photobucket.com/albums/w609/Matt_Pinkley/20170311_105243_zpsuo0s4w5v.jpg) (http://s1332.photobucket.com/user/Matt_Pinkley/media/20170311_105243_zpsuo0s4w5v.jpg.html)
Once I get my fans I need to figure out best place to put battery.
Title: Re: Will cellphone battery pack work?
Post by: Syko Voss on Mar 11, 2017, 11:13 AM
Ours are just adjacent to the keyhole slot in the back - away from our faces and beside the venting at the back of the helmet to keep things as cool as possible in there.
I glued fuzzy velcro around the battery and then attached a length of hook velcro with a washer and a screw - a length big enough to wrap around the battery securely.
That's held it into place for a fair few solid days of trooping no problem!
Title: Re: Will cellphone battery pack work?
Post by: Greydogtech on Mar 11, 2017, 11:19 AM
Ok wasn't  sure if it would make helmet offset with the weight of battery.Good idea for holding  the battery in.