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View Full Version : Question for everyone. Input needed on my first product for sale. Water Cooling!



Oneslowz28
06-27-2010, 10:58 PM
Some of you may have seen the project I have been working on. For those of you who have not, here is a short introduction.

I wanted to build a project with my Arduino that would teach me the basics of using a micro controller to control a set number of devices and display feedback from them also. So after some thought, I decided to build an Arduino Controlled Water Cooling Information Center.

It started out small and my initial goals were to read Fan RPM, Pump RPM, Water Temperature and display the data on an LCD screen. Since that first concept I have added several features and now am at the point I am going to have a custom PCB made for it. So I thought why not sell a few and share my cool new toy with everyone. So what I want to know, is does the price seem reasonable for the features you get?

The final design will be able to display information on 2 water loops. It will include:


3 Temp sensor inputs
2 Pump RPM inputs
2 Flow Meter inputs
3 Fan RPM input Plus PWM speed control
1 16x2 LCD
1 Alarm System to warn of flow stop. (Blinking LED and Buzzer)


I can code in an "opening sequence" to say anything you would like as long as it fits on 2 lines with 16 characters each. So it could be tailored to fit your theme.

I do plan on selling these as a complete working device. I will be creating a custom PCB for this project which will have an on-board ATMEGA328 micro controller. This will allow me to use as little space as possible as well as save some $$ on the production run. Total PCB size is 5cm x 5cm max. It may wind up being about 1/3 smaller. It will be able to be programmed by anyone with an USBASP programmer ($10 on ebay) so updating the firmware will able to be done by the user. The ACLCIC will ship with the most up to date firmware installed. I have not worked out what else will be included but as it sits right now I will be able to sell these for $99.00 USD and still turn a very small profit.

I think I may offer a few options like:


5.25 bay adapter (fan controls would be moved here as well.)
2 or 3 bits power temp stop fittings
1 or 3 temp probes
Different Color LCDs (Maybe RGB)


This still wont be ready for production for another month or so and then I will have to get at least a pre-order of 10 before I can manufacture and sell them at the $99.00 price. This is because it is much cheaper to buy components in bulk than single items. Think like 45% cheaper.

So just out of curiosity, If I were to list these at $99 would you consider buying one with a lead time of 2-3 weeks?

Note: No orders are being accepted at this time. So your answer is not a commitment, I am just curious if the demand is there.

knowledgegranted
06-27-2010, 11:21 PM
Yes, and I'll be contacting you in a few hours.

Trace
06-28-2010, 02:29 AM
You know I'm interested

blaze15301
06-28-2010, 04:21 AM
hey if i got a bone to drop you will get it.

BuzzKillington
06-28-2010, 04:46 AM
You would probably sell these pretty well on ebay if you don't get the 10 forum users you're looking for.

SXRguyinMA
06-28-2010, 08:13 AM
if I still had watercooling I'd be all over it

Oneslowz28
06-28-2010, 08:19 AM
if I still had watercooling I'd be all over it

All the more reason to build a new loop. :p

crenn
06-28-2010, 10:00 AM
All the more reason to build a new loop. :p
Or 2!

Kayin
06-28-2010, 03:20 PM
How many loops will it control?

Also, I've got a question but I'll PM it to you when I get a chance.

Oneslowz28
06-28-2010, 03:30 PM
2

Trace
06-28-2010, 03:34 PM
"good answer, good answer"
"Survey says:"

[X] [X] [X]

Oneslowz28
06-28-2010, 06:03 PM
Yes this will be able to poll data from 2 loops. The current design will only control the speed of 3 fans though.

I appreciate all of the comments guys and look forward to hearing more so keep them coming.

Oneslowz28
06-29-2010, 01:57 AM
Any comments on the options?

Kayin
06-29-2010, 09:31 PM
Speaking for myself, can you give it RainbowDuino abilities too?

Other than that, making it cover more than three fans would help me immensely. You know how my builds get...

Oneslowz28
06-29-2010, 10:44 PM
Yea I can always add more features but that will mean a larger ATMEGA like the 1280 or 2 of the 328s and would raise the price by about $20

Edit just did some price checks. It would raise the price by about $25

But adding RGB LED controll and another 6 fan control would not be that hard with a ATMEGA 1280

Kayin
06-30-2010, 10:18 AM
What kind of wattage would that handle, as well? Some Lamptrons can do 65w per channel...

Oneslowz28
06-30-2010, 07:26 PM
The current design should be able to handle 120w per channel.

The MOS-FET transistors I am using can handle up to 10amps each. So if power = VI then 12v multiplied by 10 amps = 120watts

Now running the transistors at a full load each is going to create a lot of heat and it would require you to add a heat sink to them. Normal 120mm fans only pull about 1amp at start up and even less once running so they usually only pull about 10watts.