I sat there trying to think of ways to extend the battery life since the 9V I was running it off of was only lasting 3-4 hours (rechargable 9V's dont last as long as non-rechargable 9V's). This meant I was burning through two batteries a game the whole time with this old mini pack I dont need any more sitting right in front of me. The fans only need 5V each but I rigged them in series so their wanting a 10V supply so with a mini 8.4V pack their running slower than their optimum which is fine since I was looking for minimum noise. Last game was a cool day so I only ended up running it for maybe 2 hours the whole day. Afterwards the battery took almost as long to discharge as it does when its completly full and its only 600mAh. Just an idea for those out there who want to know. The little switch is really necessary as I only run the fans when I need it. If I'm hiding in a bush off a path waiting to assassinate the VIP I dont want the fans buzzing away but when I'm sitting still like that they aernt required anyway.
Yes I know the wires are blue, green, and a big red connector but its just a prototype, I'm going to be airbrushing it all black soon.
Their Sunon 5V 0.9W 25mm computer fans, actually not that easy to find and cost almost $15-20 each. 35 000 RPM thus why I wanted to run them under powered.
Problems:
-I had to adjust the head strap a bit tighter so the goggles didnt slide down because of the weight of the battery pack
-The battery gets in the way of my earpiece for my radio, I need to switch which side the battery pack is on or stick it at the back.
For the nay sayers who hate fans:
-I cant afford better goggles with RX inserts
-I tried spitting in my goggles and my glasses fog even worse
-I dont want to use anti-fog wipes on my glasses since they have a bunch of special coatings and the optomitrist told me to only use actual lens cleaning solution on it as the coatings aernt to chemically stable and can dissolve easily
-I've tried anti-fog stuff on my goggles but the anti-fog stuff doesnt prevent condensation which causes massive distortion. This is actually the one huge reason I wanted fans, even on cool days when my goggles dont fog at all I still get butt loads of condensation inside the goggles in the forum of large water droplets on the lens.