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  • Brain going grazy?

    Ive created this thread in the hope to get e quicker response (maybe from another forum user.)

    I ordered 3 brains and received them a few days ago.

    Whey i hook one on to my computer and run an instance in debug mode i get really strange values from all the analog inputs at the same time.

    To show you what i mean i created a short movie

    I don't have any sensors connected to the brain.

    I have the same results with all 3 of the brains.

    Could someone tell me what i am doing wrong?
    Or are all 3 my brains broke?

    kind regards
    Pieter

  • #2
    Originally posted by yellow99 View Post
    Could someone tell me what i am doing wrong?
    At a rough guess:

    Originally posted by yellow99 View Post
    I don't have any sensors connected to the brain.
    The inputs are floating. Does it behave itself if you attach something to the input?
    Old Systems retired due to new car
    New system at design/prototype stage on BeagleBoard.

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    • #3
      Originally posted by Rob Withey View Post
      The inputs are floating. Does it behave itself if you attach something to the input?
      If i connect a temp sensor (for example) it behaves the same way...

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      • #4
        i'm sure the guys will be here soon to explain this in detail but this is common... i see the same thing on my fusion brain if nothing is connected. and if i have a single sensor connected the inputs around that analog in will flicker. Nothing out of the ordinary
        mp3Car.com Senior Tech Blogger (Want a product reviewed? Contact me.)
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        • #5
          something to try:

          If you have several jumpers (PCB header style .1") try connecting them from ground to sense on all of the unused channels and put a temp sensor on 1 input that you leave un-jumpered. See if that stabilizes things.
          It's been a while...

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          • #6
            Originally posted by Sonicxtacy02 View Post
            i'm sure the guys will be here soon to explain this in detail but this is common... i see the same thing on my fusion brain if nothing is connected. and if i have a single sensor connected the inputs around that analog in will flicker. Nothing out of the ordinary
            Ok now i tried connecting 3 temp sensors to the brain at the same time...
            Ive connected a temp sensor to port 01, port 05 and port 10
            (please see video) still port 1 and port 10 keep on jumping in value?

            Also. In the example that is included to Uber MDX there is a inside and outside temperature showing that reads the temperature of port 1 and port 2

            when i connect 2 temp sensors to those ports and start up this example i get really long values:



            When you look at the screen shot in the FAQ at fusioncontrolcentre.com it shows short values:


            Does anyone know why this happens?

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            • #7
              Originally posted by h3rk View Post
              something to try:

              If you have several jumpers (PCB header style .1") try connecting them from ground to sense on all of the unused channels and put a temp sensor on 1 input that you leave un-jumpered. See if that stabilizes things.
              This seems to work! i only have 3 jumpers at home right now and ive put them on port 2, port 3 and port 4. On port 1 ive connected a temp sensor (see results here)

              I am going to the shop for more jumpers..

              Still does anyone have an answer for the long numbers in the example? (see post above)

              Thanks so far

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              • #8
                long numbers just say to me its a configuration issue. Tho i've never done any configuring in MDX or FCC so i cant say for certain
                mp3Car.com Senior Tech Blogger (Want a product reviewed? Contact me.)
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                • #9
                  I had the same problem with the long numbers. It was the way I configured the inputs. Learning curve is a little steep in places. But after you figure it out it is a dream to set up. I suggest reading all the posts. Even the ones you don't think have anything to do with what you want the FB to do. There's lots of good info here.

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                  • #10
                    Floating ports are common. They dont do any harm. As soon as you attach a sensor, it stops floating. If there is no sensor, then why are you monitor it? Pretty much just leave it.

                    The 20.48xxxx is because you did not set the decimal precision. The textbox that says how many decimals to show. And that is the correct value for 0v being read in. It is actually -20 but that font file has no hyphen.

                    Are you sure you connected the temp sensor to the right port? If you sort of "squeeze" the pins lightly with your fingers you should be able to see the value change. Dont squeeze like a madman but just sort of go from the outermost to the innermost pins. Bring up a virtual brain and see what is going on there.
                    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

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                    • #11
                      Originally posted by 2k1Toaster View Post
                      Floating ports are common. They dont do any harm. As soon as you attach a sensor, it stops floating. If there is no sensor, then why are you monitor it? Pretty much just leave it.
                      Some ports went on giving strange and incorrect values even when i had a sensor connected to them. But now that ive put jumpers on all the ports that i don't use the problem is gone

                      Originally posted by 2k1Toaster View Post
                      The 20.48xxxx is because you did not set the decimal precision. The textbox that says how many decimals to show. And that is the correct value for 0v being read in. It is actually -20 but that font file has no hyphen.
                      Well i did not change anything to the example included in MDX(except for deleting the mainbrain and including my own) The decimals are set at 2 by default and still i get long numbers


                      Originally posted by 2k1Toaster View Post
                      Are you sure you connected the temp sensor to the right port? If you sort of "squeeze" the pins lightly with your fingers you should be able to see the value change. Dont squeeze like a madman but just sort of go from the outermost to the innermost pins. Bring up a virtual brain and see what is going on there.
                      Yea the values change when i put the temp sensor near my laptop fan (which is pretty warm)

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                      • #12
                        Ive had some email contact with Nick and he found out what the problem was.

                        It had nothing to do with the way i configured my FusionConfiguration.xml.

                        The problem was that my regional settings where set on dutch. And here in the Netherlands we use a , instead of a . for a decimal symbol.

                        Ive changed this in the regional settings and now everything is working fine.

                        For those who have the same problem bellow is a screenshot of what you need to change in your regional settings:



                        Thanks Fusion Control Centre

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                        • #13
                          Just as a followup, I am working on trying to improve regional setting support, but it is a slow process. I use the "." character as a delimeter in hundreds and hundreds of locations in various config programs and it is heavily engrained in the syntax. I never even thought about the ',' vs '.' thing. But it will be fixed, but I just dont know when.
                          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

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