Fan trouble and my seedlings first grow
- Thread starter turksjohn
- Start date
LetsGetCritical
Well-Known Member
im pretty sure you have to plug them in so they work
LetsGetCritical
Well-Known Member
happy someone who knows something about electronics could help out
leels
Member
I'm pretty sure it's the USB cable. You have to remember that USB is first and foremost a protocol for connecting/communicating between two devices, and as a second function it can provide power. You might be wiring one of the fan wires to a bus that carries power and another bus for data.can anyone figure out why this fan isnt working? ive tried both and both arent working...meanwhile here are my babiesi
"The USB 1.x and 2.0 specifications provide a 5 V supply on a single wire to power connected USB devices. The specification provides for no more than 5.25 V and no less than 4.75 V (5 V ± 5%) between the positive and negative bus power lines. For USB 3.0, the voltage supplied by low-powered hub ports is 4.455.25 V." - Wikipedia
http://en.wikipedia.org/wiki/USB#Charging_ports_and_accessory_charging_adapters
http://en.wikipedia.org/wiki/USB#Power
So that may explain why you aren't getting power to the fans. Go grab yourself some 12v adapters from Goodwill (I got one for about $2) and use that to wire up your fans. I could also be completely wrong lol. Hope that helps some!
Nullis
Moderator
Cutting a USB cable like that is a good way to trickle charge a cell phone with a missing charger. As mentioned however, they only supply about 5 volts so that would have to be about the normal operating voltage of the computer fan.
http://www.instructables.com/id/USB-Fan-Out-Of-Old-Computer-Fan/
http://www.instructables.com/id/USB-Fan-Out-Of-Old-Computer-Fan/
