Page 2 of 3 FirstFirst 123 LastLast
Results 11 to 20 of 21

Thread: Climate Control

  1. #11
    inh
    inh is offline
    Maximum Bitrate
    Join Date
    Jan 2007
    Location
    Fort Riley KS
    Posts
    515
    Quote Originally Posted by 2k1Toaster View Post
    This has been done and available since Uber was released.
    Really?!? Man, I AM behind the times. Is there somewhere I can read up on this? I didnt see anything in the documentation forum that looks to be of help.

    Quote Originally Posted by Cocide View Post
    Well I have managed to answer all of the above questions to my satisfaction. The only thing that is left is how to control the blower motor. Would it be a good idea to do a PWM system for it (rapidly turning the motor on and off, longer time off vs time on makes it slower) or will that cause excessive wear on the motor? If a PWM system will not work then what should I use to change the speed?
    You might want to check the wiring schematic for your cars climate controls. I know on mine that there are 4 fan speeds to choose from, chosen via a resistor placed on the power line to the motor. I'll just use 4 relays.
    cashtexts - Earn money for receiving text messaged offers
    cashtexts review not a scam
    Space Navigator - 6 Axis input device: Take it apart - Driver App
    RRCam - Video/webcam capture, text overlay, and recording: 2.0 Stable

  2. #12
    Newbie Cocide's Avatar
    Join Date
    Apr 2008
    Location
    Tx
    Posts
    40
    I know on mine that there are 4 fan speeds to choose from, chosen via a resistor placed on the power line to the motor. I'll just use 4 relays.
    Actually mine is exactly the same, but I was wanting to change that to a finer control so the motor can ramp up or slow down, plus during the summer right between two settings is about perfect here... go figure.

    The resistor limits the current to the motor it makes it spin faster or slower. In my setup it is a single power line that goes to the motor, it is not digitally controlled or anything fancy like that so it should be rather easy to change it.

    ... maybe there is a chip / part / board that can do this, google will tell, but first let me finish this paper thats due in about 2 hours.
    Planing [=====>] 90%
    Coding [===>----] 50%
    Interface [=>-------] 25%
    Hardware [>---------] 10%
    Install [-----------] 0%

  3. #13
    Fusion Brain Creator 2k1Toaster's Avatar
    Join Date
    Mar 2006
    Location
    Colorado, but Canadian!
    Posts
    10,049
    In the Fusion Brain --> Software --> MDX Configurator thread is where the download link is.
    Fusion Brain Version 6 Released!
    1.9in x 2.9in -- 47mm x 73mm
    30 Digital Outputs -- Directly drive a relay
    15 Analogue Inputs -- Read sensors like temperature, light, distance, acceleration, and more
    Buy now in the MP3Car.com Store

  4. #14
    inh
    inh is offline
    Maximum Bitrate
    Join Date
    Jan 2007
    Location
    Fort Riley KS
    Posts
    515
    Quote Originally Posted by Cocide View Post
    Actually mine is exactly the same, but I was wanting to change that to a finer control so the motor can ramp up or slow down, plus during the summer right between two settings is about perfect here... go figure.

    The resistor limits the current to the motor it makes it spin faster or slower. In my setup it is a single power line that goes to the motor, it is not digitally controlled or anything fancy like that so it should be rather easy to change it.

    ... maybe there is a chip / part / board that can do this, google will tell, but first let me finish this paper thats due in about 2 hours.
    In that case, PWM is it for you. Only problem is that the brain doesnt output fast enough to do PWM, I dont think. Your best bet might be some kind of serial port pwm controller..

    Quote Originally Posted by 2k1Toaster View Post
    In the Fusion Brain --> Software --> MDX Configurator thread is where the download link is.
    I downloaded and played with it a bit, looks great! Perhaps a short tutorial on automatically controlling outputs based on inputs would help myself and others out?

    EDIT: very cool graphical function layout! I think i figured it out, mostly. This makes the brain quite powerful! Now if only i could figure out how to connect nodes so i could save my function..

    MORE EDIT: Figured it out. Right click on the output of one node, left click on the input of the next..
    cashtexts - Earn money for receiving text messaged offers
    cashtexts review not a scam
    Space Navigator - 6 Axis input device: Take it apart - Driver App
    RRCam - Video/webcam capture, text overlay, and recording: 2.0 Stable

  5. #15
    Newbie Cocide's Avatar
    Join Date
    Apr 2008
    Location
    Tx
    Posts
    40
    In that case, PWM is it for you.
    I guess that if the pulse was 100x a second or faster there would not be too much strain on the motor, I just don't want to have to replace it in 6 months.

    Only problem is that the brain doesnt output fast enough to do PWM, I dont think. Your best bet might be some kind of serial port pwm controller.
    Well I am planing on having a microcontroller to control the starter motor and door locks based on scanning a RFID tag in my hand (finally I shall never use a key for anything ever again.... I love my job). I figure I will just use a slightly more powerful one and have it be a servo controller (or blower PWM controller) for the HVAC.
    Planing [=====>] 90%
    Coding [===>----] 50%
    Interface [=>-------] 25%
    Hardware [>---------] 10%
    Install [-----------] 0%

  6. #16
    Newbie Cocide's Avatar
    Join Date
    Apr 2008
    Location
    Tx
    Posts
    40
    one thing I did not take into concieration is if a relay will fire that fast or if the relay itself will become warn out.

    Will I have to get a special relay to handle pulsing every 1 - 10 ms?
    Planing [=====>] 90%
    Coding [===>----] 50%
    Interface [=>-------] 25%
    Hardware [>---------] 10%
    Install [-----------] 0%

  7. #17
    Raw Wave Rob Withey's Avatar
    Join Date
    Apr 2000
    Location
    Bedfordshire, UK
    Posts
    2,139
    Quote Originally Posted by Cocide View Post
    one thing I did not take into concieration is if a relay will fire that fast or if the relay itself will become warn out.

    Will I have to get a special relay to handle pulsing every 1 - 10 ms?
    Yes, something with no moving parts would be best, solid state relay for example.

    Having a mechanical relay kick back and forth at 100 to 1000 times a second is going to end in tears, not mention the buzzing will get very annoying very quickly I'd guess.
    Old Systems retired due to new car
    New system at design/prototype stage on BeagleBoard.

  8. #18
    Newbie Cocide's Avatar
    Join Date
    Apr 2008
    Location
    Tx
    Posts
    40
    Well digikey it is then.

    Thanks again for all the help.
    Planing [=====>] 90%
    Coding [===>----] 50%
    Interface [=>-------] 25%
    Hardware [>---------] 10%
    Install [-----------] 0%

  9. #19
    Constant Bitrate
    Join Date
    Sep 2005
    Location
    Australia
    Posts
    166
    The best way to control a blower i found is by using PWM with a high current solid state device, not a relay!!.Im actually currently working on a 15 amp PWM controller with 15 different speed seetings. This is designed to be an add-on to the fusion brain. The only thing is that you need to sacrifice 5 outputs. I also have another add-on that increases the availiable ouputs. Im sure the fusion brain could also make these, but im very impatient. If anyone needs more info let me know, im willing to help.

  10. #20
    Maximum Bitrate stonestatue's Avatar
    Join Date
    Feb 2006
    Location
    Huntsville, AL (Atlanta, GA temporarily)
    Posts
    487
    PM sent.
    Check out my GMC Savana worklog.

    Remaining tasks to facilitate vanputer installation codename "Enterprise":
    - Edit skin to liking.
    - Get compatible phone for mobilephone.net.
    - Facilitate HVAC control.

Page 2 of 3 FirstFirst 123 LastLast

Similar Threads

  1. Control devices via LPT and Bluetooth
    By Towar in forum Software & Software Development
    Replies: 10
    Last Post: 08-25-2008, 11:51 AM
  2. Need wiring help for 2005 Grand Prix.
    By derekmac in forum Car Audio
    Replies: 33
    Last Post: 09-21-2007, 09:42 PM
  3. Climate Control optimization
    By 300Pilot in forum Software & Software Development
    Replies: 3
    Last Post: 09-23-2006, 09:28 AM
  4. mercury sable w/ electronic climate control
    By sgibbers17 in forum General Hardware Discussion
    Replies: 1
    Last Post: 01-03-2006, 09:31 AM
  5. Digital dash and climate control???
    By yamathegreat in forum General Hardware Discussion
    Replies: 3
    Last Post: 10-31-2005, 04:41 PM

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •