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Thread: Another Thread About Carputer staying on all of the time.

  1. #1
    FLAC
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    Another Thread About Carputer staying on all of the time.

    I've been reading this website, nearly non-stop for a week now. I have tons of questions (and yes I read the FAQ and know how to search). I've read a lot on people wanting to leave their computer on, long term, after the vehicle is off. I am in search of a 100% soultion. Besides many of our childhood's hero, KITT did it, so why cant our vehicles.

    Here are a few related questions/comments related to this issue:

    Q: Can you wake a computer from a low-power-consumption mode like standby or hibernate, remotely? I'm thinking of wake-on-lan, or some other way that a remote device (through https://www.gotomypc.com/msapp ) can communicate with the carputer's EDGE/GPRS card.

    Waking a computer from a low power consumption mode is one way to extend the life of the battery... a little.

    Q: Why would you want to have your computer on while you are away? (I have heard this just about every time the question is posed and my response is always )

    A: Here're my reasons:

    -I walked away from my car and walked into the mall and finally out of the range of my 2-way-alarm-remote's extended range, and suddenly I question wether or not I turned my alarm on, locking my doors.

    -I don't want to pay for another overpriced system/service where my car can contact me anywhere, anytime if my alarm goes off.

    -My car is in Florida and I want to start it from Hawaii.

    -I want to view the GPS and security cams from the same distance.

    -the show car value is kind of nice IMHO.

    -I could plot a trip, without transfering files, prior to getting to the vehicle.

    -anything I have set up with, interfaced to the computer, I could set up before I get to the vehicle.

    all without having to worry about wether or not the computer is on.

    -I'm sure the more I sit here, the more I will remember/ think up.

    -I want to take a look at my car battery's calculated capacity and voltage from anywhere. And if it's low I could start my car if conditions permit and recharge the batttery(s).

    -which leads me back to KITT and a solution to the battery life scenario:
    I'd like to have the car start itself and run itself to charge the battery (along with muting the radio since I usually leave it pretty loud), until the carge indicator indicates full. All of course if the usual requirements for a remote start are met, and perhaps some way of ensuring that the vehicle is not in an inclosed area (which would be tough other than pushing a safety button upon exit). Maybe it could send me an email or text when this occurs.

    There was a previous thread that touched on this I think... I started to post there but figured I'd start anew. New shutdown controller - software

    Thank all of you for growing this community into what it is, I'm new(b) obviously and can't put my laptop down now. I remember not too many years ago when I was calling Allen Bradly and other industrial companies for touchscreens, because that was all there was ($$$$$$$). I hope I can learn some and help as well (electrical/ electronics - not programming unfortunately).

  2. #2
    FLAC
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    Q: Other than being pricey, what do you think of this module for adding laptop-like functionality to a PC.

    Yeah...Probably not (it probably charges the 16+ volt battery prior to the 12 volt end), and I have a better idea, maybe...

  3. #3
    Fusion Brain Creator 2k1Toaster's Avatar
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    Quote Originally Posted by h3rk View Post
    Q: Other than being pricey, what do you think of this module for adding laptop-like functionality to a PC.
    It is just a battery. Shouldn't be expensive. Since going in your car, get a second deep cycle battery and a tank circuit. That way when the car is on, power is drawn from alternator, and when off, it draws from the secondary battery. The tank circuit prevents the computer from drawing from the main battery too. That way when the deep cycle goes dead, off goes the computer, and car battery just fine.
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  4. #4
    Maximum Bitrate v8 scimitar's Avatar
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    Q: Can you wake a computer from a low-power-consumption mode like standby or hibernate, remotely? I'm thinking of wake-on-lan, or some other way that a remote device (through https://www.gotomypc.com/msapp ) can communicate with the carputer's EDGE/GPRS card.

    Waking a computer from a low power consumption mode is one way to extend the life of the battery... a little.
    Standby yes hibernate no. In hibernate the PC is in the same state as switched off only the system state is written to disk so in theory it should boot quicker. To wake from hibernate you would have to physically bridge the switch connectors on the motherboard. Standby on the other hand the PC is still running with everything held in the memory so wake-on-lan works.
    Visit my site V8 Scimitar

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  5. #5
    FLAC
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    So I have this possible solution, I'd thought I'd run it up the flagpole:

    For an always on GPRS/EDGE connection, I'm deciding to go with T-mobile due in large part to my current service with them and my excellent service history. Its $49/month, for use with a Sony Ericsson GC89. The card is $149.
    I pay $19 for the same service on personal-use MDA. I called, just to see if I could get just the data service on a new MDA (only $100 more than the card), at the same price. "No, for data only it's $49.
    That led me to my newest attempt at remote comm's in any situation at any time; the phone lights up and plays whatever file you want for events, i.e. text message. I could wire into that for a signal to gate the mobo for startup (previously hibernating). Making the phone number a sort of pw for the computer to startup. The computer isn't always on either, which cuts down on those odd-looking auto-starts.
    Windows Mobile 5.0 uses Modemlink to connect as a modem (bt or usb). It interrupts modemlink and its connection for other use of the phone such as text messages or phone calls, and the reconnects.
    On XP, however, I would need script or something to reconnect to that network connection automatically during startup(which involves pushing the 'dial' button).

    Q: Is that possible or very difficult? (I know difficult is relative, so let me just say I've written a little script in IRC and very little VB, VBA, C++ experience - and in any event, you dont want me as your IT administrator)

    The phone would charge through the usb cable, but not while the computer is off, but I was thinking about tapping into that usb cable with a relay that closes once the computer is fully off, to connect another power source.

    Is this possible without interferring with data transfer along the cable from the pc to the phone? I imagine it wouldn't make much difference as long as the addition had a very high impedance in the 'PC on' state, and was well sheilded.

    Can anyone think of any roadblocks I'm missing, or a better way?

    Afterthought: Does anyone see me getting in trouble applying +5 and com to the usb when the pc is down? Like bad, or unitended affects of that voltage making it to and through the PC and on to many other components.

  6. #6
    Newbie mm_202's Avatar
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    h3rk,
    Im actually in the process of doing the exact same thing as you are.
    I want my carputer to be constantly on and if the power starts getting
    low either hibernate or start the car and charge the battery a bit.

    Starting most cars is pretty easy. I got my old '99 Honda Civic to start/die from my cellphone using BlueTooth. My problem is that I have a new '06 3-Series and really dont want to have to cut any wires. But I have a workaround in the works. But anyways, everything that you want is very possible and practical.

    And if you're interested I can give you more details.

  7. #7
    FLAC
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    I have a dei alarm with remote start. I have to check the install manual, but I think it has an input wire for remote start on/off. So the mechanics (err, electrics) of starting the car for me wouldn't be a problem.
    I would be very interested where you are sensing voltage, how it is sensed (hardware and software) how this sensed value is introduced to and utilized by software, what software you are using, and what output device you used to provide on/off (relay output by a usb device like phidgets I/O or 8/8/8?).
    Other than using the remote start, and the car's saftey features (i.e. neutral safety, brake sense) did you use any other parameters to ensure safety? I'm thinking of hazards like starting a car indoors.
    I'm sure I'll have more, looking forward to a rich exchange of knowledge and ideas, thoroughly covering all the bases on the subject. I haven't seen such elsewhere yet, maybe here?

  8. #8
    Newbie mm_202's Avatar
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    Quote Originally Posted by h3rk View Post
    I have a dei alarm with remote start. I have to check the install manual, but I think it has an input wire for remote start on/off. So the mechanics (err, electrics) of starting the car for me wouldn't be a problem.
    I would be very interested where you are sensing voltage, how it is sensed (hardware and software) how this sensed value is introduced to and utilized by software, what software you are using, and what output device you used to provide on/off (relay output by a usb device like phidgets I/O or 8/8/8?).
    Other than using the remote start, and the car's saftey features (i.e. neutral safety, brake sense) did you use any other parameters to ensure safety? I'm thinking of hazards like starting a car indoors.
    I'm sure I'll have more, looking forward to a rich exchange of knowledge and ideas, thoroughly covering all the bases on the subject. I haven't seen such elsewhere yet, maybe here?
    For the hardware, Im just using a microcontroller (www.basicx.com) that connects to my carputer thru a USB-serial cable. The board simply measures the battery voltage thru a ADC pin on the BasicX chip, it also measures things like temp, etc. The data is relayed to a custom program that I built that decides what to do, if enviroment allows and their is sufficent fuel, it will start the car for x minutes till the battery is at atleast 12V. Or if starting the car isnt an option, it sends me a message (over 802.11; working on a cell connection option) and just hibernates the computer.

    I also have a safely-relay that will disconnect the carputer if the voltage falls below 10V (meaning that the carputer probably locked up and no one likes a dead car battery).

    I use GPS data so that my program knows where it is: at work, at home, in my garage, or otherwise. I do a lot of AI/vision recognition stuff, so I'll probbaly also have it not start if it senses someone/something (like a kid or an animal) around the car.

    Interested in hearing your response.

  9. #9
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    phone control to turn pc on and off and also how to keep ur pc on all the time

    in regards to ur question about is it ok to put +5 into ur pc. all you hve to do it use a one way diode/blocking diode on the cable from the pc and the cable from the power source, then you can constantly have the power source on to charge the phone and then when the pc is on the other cable connected to the pc and phone will work with activesync etc. i want to keep my pc on all the time too and also use my phone to turn on and off the pc if needed.all you do is use a relay to hook it up to the handsfree socket on ur phone that way you dont destroy ur phone u just take apart a hands free cable.also if you hide 2 big 100amp batteries in ur boot somehwere u can hook the pc up to them,but u must hook up those batteries to the alternator not to the car battery.jsut calculate how much battery storage u need to keep the pc on overnight and whilst ur not using it when its sitting n car park at work all day etc. hoep this helps,







    Quote Originally Posted by h3rk View Post
    So I have this possible solution, I'd thought I'd run it up the flagpole:

    For an always on GPRS/EDGE connection, I'm deciding to go with T-mobile due in large part to my current service with them and my excellent service history. Its $49/month, for use with a Sony Ericsson GC89. The card is $149.
    I pay $19 for the same service on personal-use MDA. I called, just to see if I could get just the data service on a new MDA (only $100 more than the card), at the same price. "No, for data only it's $49.
    That led me to my newest attempt at remote comm's in any situation at any time; the phone lights up and plays whatever file you want for events, i.e. text message. I could wire into that for a signal to gate the mobo for startup (previously hibernating). Making the phone number a sort of pw for the computer to startup. The computer isn't always on either, which cuts down on those odd-looking auto-starts.
    Windows Mobile 5.0 uses Modemlink to connect as a modem (bt or usb). It interrupts modemlink and its connection for other use of the phone such as text messages or phone calls, and the reconnects.
    On XP, however, I would need script or something to reconnect to that network connection automatically during startup(which involves pushing the 'dial' button).

    Q: Is that possible or very difficult? (I know difficult is relative, so let me just say I've written a little script in IRC and very little VB, VBA, C++ experience - and in any event, you dont want me as your IT administrator)

    The phone would charge through the usb cable, but not while the computer is off, but I was thinking about tapping into that usb cable with a relay that closes once the computer is fully off, to connect another power source.

    Is this possible without interferring with data transfer along the cable from the pc to the phone? I imagine it wouldn't make much difference as long as the addition had a very high impedance in the 'PC on' state, and was well sheilded.

    Can anyone think of any roadblocks I'm missing, or a better way?

    Afterthought: Does anyone see me getting in trouble applying +5 and com to the usb when the pc is down? Like bad, or unitended affects of that voltage making it to and through the PC and on to many other components.

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