i find nothing ever is. maybe a design patent, but all the details are open source. i don't see patents offering any protection, so my business model assumes chinese copies.
......
haha then how do you plan on making money?
Won't happen buddy.
i find nothing ever is. maybe a design patent, but all the details are open source. i don't see patents offering any protection, so my business model assumes chinese copies.
......
Thing is the US already is owned by China.
So im real curious and do a good amount of online retail with odds and ends, and get a lot of it from china. For the last 6 months or so i have been trying to figure out how to recreate my 'fan speed controller' that i bought on ebay for $25.
I looked into all the tech specs and determined that it must be being made for some other purpose, no way htgsupply is putting these things together. So after a good amount of guess and check i catch a break on some website. So i turn out Drillmaster 43060
http://www.harborfreight.com/router-speed-control-43060.html
Turns out this stupid controller was for a router, and sells for 19 online compared to 25-42 on ebay.
Now the really aggravating part is i can get them FOB China for $6.9 each, but i need to order 500. Would cost me about 10 bucks each to my door. I looked around on ebay and there are over 600 sold on there so far, all at $25+....so people have made 6k on fan speed controller in last 6 mos-yr just on ebay.
only in last few weeks someone else figured this out and a couple guys sell them on ebay now. Id love to get my hands on 100 or so to remarket, but 500 is a few too many for me..
Just cant believe no one else has thought to track these down or figure out what they were to lower the cost on something that regulates your power.
Now im curious, what do you spend over $20 on that either needs to be modified to be better (ideally) ?
think it costs too much for what it is ?
What would be a handy product to make your life easier ?
Looking to create a little here in my spare time while caring for the growth, someone was first to invent a power trimmer, somone else with the speed controller....any thoughts ?
Ideally lightweight and small, easy to ship, thanks just hadda rant this out there, hate someone beating me to the punch lol
Thanks. This is model 14 in a 9 year effort to get it right. i'm using the Apple model for marketing -- create a great design and people will pay the asking price to own it.
........
But i'm doing all the production myself -- me and my computers and my CNC.
....
umm anyone selling LED's? Them too.
Fan speed controllers are simply a variable resistor also known as Potentiometers. It's what's a dimmer switch is, it's what a volume control is, it's what's in that router controller and virtually ever device where you want to be able to adjust the input or output of an item.
Dimmer switches only cause problems because a dimmer switch for a house lamp doesn't have the same voltage/current requirements as a heavy duty fan. If you knew what resistence level was needed to get the proper voltage drop and the correct current level you could shop for a specific dimmer switch with the right resistence to allow it to function safely on a heavy duty fan.
They dont make a cost effective hi amp dimmer switch for under 20 bucks as far as i can see.
.......
Thanks. This is model 14 in a 9 year effort to get it right. i'm using the Apple model for marketing -- create a great design and people will pay the asking price to own it.
i've got a day job, i don't care how much i make on the Bud Toaster -- although it will not be cheap-cheap (say, $400, complete with lifetime (mine) warranty and free shipping). A couple of CNC machines will handle production of 1000 per year. i just need to source the shorty glassware from India -- i hate the thought of cutting a 150mm test tube down to 38mm and trashing the top of the tube. They can recycle at the factory.
But i'm doing all the production myself -- me and my computers and my CNC.
There is a really NICE electronic one available on Ebay. I'll see if I can find it. Someone I know bought one and it's awesome, his fan motor doesn't even hum while turned down (unlike with the one posted by OP).
yea theres a couple on there around 100 bucks for 120v, would be really neat for that overkill hi tech grow room when you walk in and just have 20 switches on the wall and you dont have to touch anything else lol
oh thats not too bad at all then, just pay securely and phone verify the company. so $200 gets you moving there...what else do you still have to do ? Or is this already a working product that you get to enjoy ?
If you were familiar with grow room designs you would know there very rarely is a demand for 20 fan dimmers per room.
On another note if you would have bothered looking yourself and maybe followed my Ebay link you would have noticed those electronic dimmers (DC voltage controllers) are not $100 each but more around the $30/each area......
i use it four or five times a day.
i'm changing the power input design (from cable to Deans plug) and i think i've got it figured out, but need to fab it to be sure. then make a half dozen for field tests and nail down the fab procedure. And one more iteration on the pcb to accommodate the Deans:
And a bit more software debugging. As PID theory says "Diddle with the coefficients" -- i could diddle a bit more to improve the current 1°F temperature stability.
......
Why spend $35 to control a fan and you still need a box to protect it, as compared to buying the same piece with half the strength for $19 when its already 7 times the power you need to run a 2-3 amp fan ? Dont argue just for the hell of it here, doesnt make any sense.
I am not the one who brought up the dimmer subject in 1st place.