Dang, I want one of those now! What a deal! Sub'd!

 

using an UNO for development .... then I will probably solder with a teensy..

but i will probably keep the bread board for a while

 

well I like the graphic display...gives me something to tinker with and its functional..

 

Well if you can make it better... biggest complaint I recall was when the sun hit it at certain angles it was almost unreadable...

 

yeah, thats a big issue with any backlit lcd. try a front-lit or non-lit display. might be able to see it in direct sunlight

 

will have to play with placement

 

WOW this is an awesome find! I like this way better than the Hayden unit. 2 questions before I buy one though.
1) how long is the probe feed wire/could it be lengthened if needed.
2)I am looking to not only be able to run my "Villager" fan on low for engine cooling but would like to be able to have it kick in on high from head pressure on the A/C system (say at 250-275PSI). Ideally it would come on low fan anytime either the A/C is on or the engine requires cooling AND be able to kick into high speed fan when A/C head pressure reaches a preset point. Heavy truck systems use a "trianary" or "bianary" switch to control head pressure driven fan operation but ive never seen it on a passenger vehicle.
ANY thoughts???????

 

According to the info on the site the thermistor cable is extendable with no issues...
it only has a single input so it would not be able to sense head pressure... you could rig a relay so that when ever you have the a/c on the fan controller would trigger high speed instead of low speed...

 

Thanks aviator!

Look for the arduino build all kinds of fancy work like this in the future

 

Thanks for the reply Aviator. The thermistor wire lengthening sounds good as the one pictured doesn't look too long. I run the A/C almost constantly here in Mississippi from May to the end of October so I'm not too sure about having the fan on high all that time. I think low would be ok with the high speed kicking in when you are crawling or in slow/stopped traffic. There is a port on the filter/dryer so I may see if I can get a trianary switch. I'll let you know how it comes out!

 

got a link? or are you posting arduino stuff here?

 

No worries... the wire that comes with it is 1m long so it would need to be extended for just about any installation...
so you're going to use the trinary as a switch to turn on the high speed when the a/c coolant temp/pressure hits a certain point?... looking forward to what you get...

 

I thought I started on some where ..but can't find it..

I'll start another thread... going to use and Arduino to add fertilizer for my fish tank..

 

delivered

 

Installed

http://www.youtube.com/watch?v=uWcMZzo0Ins

 

Here are the modified instructions from Autospeed

Controlling an output

The module is fitted with a 5 amp relay. This means it can be connected directly to buzzers and warning lights. Through an additional heavy duty automotive relay, it can also control pumps or fans. (We’ll cover this application in a moment.)

To get a feel for how the control system works, it’s a good idea to play with it before installation. Let’s take a look at how it can be set up.

Pressing the Set button briefly changes the display to show the set-point temperature. This setting can be altered by pressing the up and down keys. When done, press the Set key again or simply wait a few seconds and the display reverts to the current temperature.

Pressing the Set button for 3 seconds brings up a second menu. Different parameters can be selected by pressing the up/down keys. To change the selected parameter, press the Set key a second time, then make the adjustments with the up/down keys. Whatever setting is selected is retained in memory, even if power is lost.

The available parameters are:

HC – this menu configures the module to either turn on its relay when the temperature exceeds the set-point (‘C’ mode), or turns on the relay when the temp falls below the set-point (‘H’) mode.

d – this sets the difference in temp between switch-on and switch off. (This is sometimes called the hysteresis.) By using the up/down keys, you can set this anywhere from 1 degree C to 15 degrees C. This is a very powerful control that can make a huge difference to how the system functions.

L5 – this is the minimum temperature the set-point can be configured. Normally, this would not need to be altered from its minus 50 degrees default.

H5 – this is the maximum temperature the set-point can be configured. Normally, this would not need to be altered from its 110 degrees default.

CA – this function allows you to correct the temperature display by adding or subtracting 1 degree units from the displayed reading.

P7 – this function is used when in C mode you don’t want the output cycling on and off at short intervals. The setting can be anything from 0 – 10 minutes. It example, if it is set to 1 minute, after the relay has activated once, it will not activate again until a minute has passed – even if the temp set-point has been tripped. In most uses you would set this to zero.
Over Temp Alarm

So let’s take a look at how you’d set the module up to turn on a relay water temp exceeds 92C or 197.6 f.

Press Set for 3 seconds then select the following:

HC – set to C

d – set to a small value like 4 degrees

L5, H5 and CA left at factory defaults

P7 set to zero

Press Set briefly then use the up/down keys to select 88 degrees as the set-point.

Huh? 88 degrees? We want the alarm to trip at 92 degrees, don’t we? This is the only trick in setting up the unit. In ‘C’ mode the relay will trip when the temp actually reaches the set-point plus the hysteresis – ie 88 degrees plus the 4 degrees we set in ‘d’ mode.

 

Looks good in the video, how do you find the cycling when driving down the road with airflow through the rad?... what are the goodies beside the controller? how/where did you mount the temp. sensor?
sorry for all the ?... just stuff everyone is gonna ask [besides me that is lol]...

 

x2 from me. i like the controller, but am a bit more interested in the hardware side of things

 

OUTSANE.........ok, GREAT posting!!!!!! YOU ROCK!!!!
love the video and the write up. Excellent walk through/explanation of how to make it work. I will put it to good use when mine comes in another week. now I just have to rig up my manual off/over ride switch and A/C head pressure switch!!! I'll post on here when I get it figured out. gonna try to mount my controller in the semi-worthless dash pocket to the left of the steering column.
WAY TO GO!!!!!

 

Looks good in the video, how do you find the cycling when driving down the road with airflow through the rad?
No while running on the road same experience maybe quicker

... what are the goodies beside the controller?
Taurus fan is being switched on by three relays, going to be the high side. I'll use the low side for the ac. I did extend the temp wire with some speaker wire.

how/where did you mount the temp. sensor?
sorry for all the ?... just stuff everyone is gonna ask [besides me that is lol]...