Begin forwarded message: > Subject: Re: trying owfs... > Date: 8/21/2005 8:01:12 PM > From: Pierre Demartines <[EMAIL PROTECTED]> > To: Paul Alfille <[EMAIL PROTECTED]> > > Hello Paul, > > > > As mentioned before, yes, I was somewhat successful: > > - owfs source downloaded (via cvs) > > - configured with lots of --disable... > > - compiled and installed > > - it works on a few devices (but I'm having trouble in detecting more > > than 3 switches or 2 thermometers --probably something is wrong > > hardware-wise, although I was careful and powered all the devices, or > > perhaps the DS9097 --not U -- and the serial speed 115kbps are not > > adequate). > > > > In any case, maybe I should tell you about the application I have in > > mind, and perhaps you can give me some pointers. > > > > I am interested in simplifying the wiring of kit cars (in particular > > that of my race car, see www.teambirkinsport.com). In my original idea, > > I thought (perhaps naively) that I could simply connect most of the > > devices of the car (contact switches on the dashboard, lights, blinkers, > > fuel gauge, speedometer sensor, speedo, dashboard lighting, wiper motor, > > fan) via a simple 1-wire network, hence simplifying greatly the whole > > cable mess that is usual in those cars. For example, a switch turned on > > on the dashboard would simply connect a DS2401 to the bus. The > > controller would know that this means, for example, that the headlights > > must be turned on, and would issue the relevant commands to turn the > > respective DS2405 of each headlight on. For the speedo, I could have a > > counter on the sensor side, and some frequency controlled clock on the > > speedo/odometer side. Etc. etc. > > > > Of course, the vital organs of the car, like the ECU, injectors, and > > such would not be put on the 1-wire network. Just the peripheral > > devices, instrumentation, etc. Anything non-critical. In the future, I > > could also do some data collection by making 3D accelerometers with a > > 1-wire protocol, add a whole bunch of thermometers (diff, gearbox, > > water, oil) and pressure sensors, throttle position, steering position, > > torque, what-not. > > > > Now, I have two problems: > > 1) I am not sure the 1-wire network speed will be sufficient to handle > > all that. > > 2) I don't know what to select as a bus controller. I would rather avoid > > to have a laptop sitting in the car at all times... and would prefer > > some embedded solution. > > > > Is there any recommendation you can make, based on your experience? > > > > Best regards, > > > > ~Pierre > > > > > > Paul Alfille wrote: > > > Were you successful? > > > > > > Paul > > > > > > On Wednesday 10 August 2005 10:34 pm, you wrote: > > > > > >>Hi, > > >>I'd like to give your OWFS a try, but I can't find the download page... > > >> (the main page refers to itself, as it seems). Can you tell me where > > >>the download area is? > > >> > > >>Thanks, > > >> > > >>~Pierre > > > > > > > > > > > >
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