captainjj
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I was tired of having to change a battery mid troop, so I've decided to build my own 5v fan cooling system using a rechargeable usb power cell. I trooped for 4 hours with this setup and only used 1/4 of the battery.
Flash back to my second troop where I burned through (3) 9v batteries in 3 hours. This will save money big time!!
Parts list:
Power Cell:
http://www.amazon.com/Anker-PowerCore-Portable-Ultra-Compact-Fast-Charging-Technology/dp/B0194WDVHI
3x 5v Fans:
Switches:
2x Tall Switch (mounted through the bracket)
http://www.digikey.com/product-detail/en/judco-manufacturing-inc/40-2385-01/504PB-ND/161440
2x Tall Rubber Nut
http://www.digikey.com/product-detail/en/judco-manufacturing-inc/19-1088-00/513PB-ND/63952
1x Short Switch (back fan)
http://www.digikey.com/product-detail/en/judco-manufacturing-inc/40-3352-02/528PB-ND/611177
1x Short Rubber Nut:
http://www.digikey.com/product-detail/en/judco-manufacturing-inc/19-1082-00/532PB-ND/611181
Wire:
22 gauge wire with connectors (both male and female)
USB Connector:
Old cell phone charger
Bracket:
(.04) sheet metal black anodized aluminum.
http://www.ebay.com/...=STRK:MEBIDX:IT
Neoprene foam sheet ( Used as a backing to cover bracket and conceal most of the wires.)
http://www.ebay.com/...=STRK:MEBIDX:IT
Other items...
• Solder Gun / Solder
• Shrink tube (various sizes)
• Electrical Tape
• Wire stripper/crimper
I'm running the same with 2 40mm 5v fans and ran 6 hours.
Sent from my iPhone using Tapatalk
HOW TO: DIY USB Helmet Fans - No more 9v or AAs
in Electronics for Helmets / Blasters
Posted
This is the USB lipstick Batter I use. I have 3 5v 40mm fan and I can run them 6 hours. https://www.ebay.com/itm/161672534301
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