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Dear guys, I have finished and tested my new PID code for BX4 (although I seem to have fried my BX4 in the process of combing it with my other tasks!) . It is an adaptation of BS2 code from their "Industrial Controllers" projects. The code succesfully controls a very high response and low inertia system (1x1 inch thin copper plate heated by a 15 watt heater) within 0.1deg C, despite the fact that the MAX6674 thermocouple digitizer swings randomly +- 0.4 degC. The method of control - PWM driven semiconductor CRAYDOM relay. Anyone who is interested in the code - let me know. Cheers, Alex.

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I may be interested in the code but at the moment I'm more interested in why your controlling the temperature of that little copper plate. -----Original Message----- From: biovirus1 [mailto:] Sent: Thursday, May 16, 2002 8:43 AM To: Subject: [BasicX] PID code finished. Dear guys, I have finished and tested my new PID code for BX4 (although I seem to have fried my BX4 in the process of combing it with my other tasks!) . It is an adaptation of BS2 code from their "Industrial Controllers" projects. The code succesfully controls a very high response and low inertia system (1x1 inch thin copper plate heated by a 15 watt heater) within 0.1deg C, despite the fact that the MAX6674 thermocouple digitizer swings randomly +- 0.4 degC. The method of control - PWM driven semiconductor CRAYDOM relay. Anyone who is interested in the code - let me know. Cheers, Alex. Yahoo! Groups Sponsor ADVERTISEMENT <http://rd.yahoo.com/M=226020.2031982.3521154.1971030/D=egroupweb/S=17065542 05:HM/A=1073422/R=0/*http://www.qksrv.net/click-1084497-610300?url=http://ww w.tv/en/landing.shtml&HHcode=yhc3my2> <http://us.adserver.yahoo.com/l?M=226020.2031982.3521154.1971030/D=egroupmai l/S=1706554205:HM/A=1073422/rand=837694864> > . [Non-text portions of this message have been removed]

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Dear Alex, I'm highly interested in receiving your PID-code! Thanx in advance, Wolfgang Dipl.-Ing. W. Willenbrink Universitaet Muenster Institut fuer Biochemie Wilhelm Klemm Str. 2 48149 Muenster T 0251 833 3101 F 0251 833 3206 ----- Original Message ----- From: Harry J. White To: ' Sent: Thursday, May 16, 2002 3:07 PM Subject: RE: [BasicX] PID code finished. I may be interested in the code but at the moment I'm more interested in why your controlling the temperature of that little copper plate. -----Original Message----- From: biovirus1 [mailto:] Sent: Thursday, May 16, 2002 8:43 AM To: Subject: [BasicX] PID code finished. Dear guys, I have finished and tested my new PID code for BX4 (although I seem to have fried my BX4 in the process of combing it with my other tasks!) . It is an adaptation of BS2 code from their "Industrial Controllers" projects. The code succesfully controls a very high response and low inertia system (1x1 inch thin copper plate heated by a 15 watt heater) within 0.1deg C, despite the fact that the MAX6674 thermocouple digitizer swings randomly +- 0.4 degC. The method of control - PWM driven semiconductor CRAYDOM relay. Anyone who is interested in the code - let me know. Cheers, Alex. Yahoo! Groups Sponsor ADVERTISEMENT <http://rd.yahoo.com/M=226020.2031982.3521154.1971030/D=egroupweb/S=17065542 05:HM/A=1073422/R=0/*http://www.qksrv.net/click-1084497-610300?url=http://ww w.tv/en/landing.shtml&HHcode=yhc3my2> <http://us.adserver.yahoo.com/l?M=226020.2031982.3521154.1971030/D=egroupmai l/S=1706554205:HM/A=1073422/rand=837694864> > . [Non-text portions of this message have been removed] Yahoo! Groups Sponsor ADVERTISEMENT Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service. [Non-text portions of this message have been removed]

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On Thu, 16 May 2002 12:43:01 -0000, you wrote: >Dear guys, > >I have finished and tested my new PID code for BX4 (although I seem >to have fried my BX4 in the process of combing it with my other >tasks!) >. >It is an adaptation of BS2 code from their "Industrial Controllers" >projects. The code succesfully controls a very high response and low >inertia system (1x1 inch thin copper plate heated by a 15 watt >heater) within 0.1deg C, despite the fact that the MAX6674 >thermocouple digitizer swings randomly +- 0.4 degC. >The method of control - PWM driven semiconductor CRAYDOM relay. >Anyone who is interested in the code - let me know. > >Cheers, > >Alex. > Yes, please! Send me your PID code! TIA, grant

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thermal inertia ? is there such a thing ? richard ----- Original Message ----- From: "biovirus1" <> To: <> Sent: Thursday, May 16, 2002 7:43 AM Subject: [BasicX] PID code finished. > Dear guys, > > I have finished and tested my new PID code for BX4 (although I seem > to have fried my BX4 in the process of combing it with my other > tasks!) > . > It is an adaptation of BS2 code from their "Industrial Controllers" > projects. The code succesfully controls a very high response and low > inertia system (1x1 inch thin copper plate heated by a 15 watt > heater) within 0.1deg C, despite the fact that the MAX6674 > thermocouple digitizer swings randomly +- 0.4 degC. > The method of control - PWM driven semiconductor CRAYDOM relay. > Anyone who is interested in the code - let me know. > > Cheers, > > Alex.

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If not, you will likely freeze to death if outdoors after dark. On 16 May 2002, at 11:25, Richard Friedrich wrote: > thermal inertia ? is there such a thing ? > > richard > ----- Original Message ----- > From: "biovirus1" <> > To: <> > Sent: Thursday, May 16, 2002 7:43 AM > Subject: [BasicX] PID code finished. > > Dear guys, > > > > I have finished and tested my new PID code for BX4 (although I seem > > to have fried my BX4 in the process of combing it with my other > > tasks!) . It is an adaptation of BS2 code from their "Industrial > > Controllers" projects. The code succesfully controls a very high > > response and low inertia system (1x1 inch thin copper plate heated > > by a 15 watt heater) within 0.1deg C, despite the fact that the > > MAX6674 thermocouple digitizer swings randomly +- 0.4 degC. The > > method of control - PWM driven semiconductor CRAYDOM relay. Anyone > > who is interested in the code - let me know. > > > > Cheers, > > > > Alex. > > > > > > > > > > > > > > > > > > ------------------------ Yahoo! Groups Sponsor > ---------------------~--> Tied to your PC? Cut Loose and Stay > connected with Yahoo! Mobile > http://us.click.yahoo.com/QBCcSD/o1CEAA/sXBHAA/dN_tlB/TM > ---------------------------------------------------------------------~ > - > > --- http://www.laser.com/dhouston/

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I'd be interested in the code. I'm building a controller for my small home brewery, and I'm currently using an Omoron PID controller. I've got a BX24 interfaced to a LCD and Thermistor with Crydom SSR's on the outputs. The program currently only supports a thermostat type operation but I have PID code in the works. Thanks! Russ --- In basicx@y..., "biovirus1" <alex_chaihorsky@h...> wrote: > Dear guys, > > I have finished and tested my new PID code for BX4 (although I seem > to have fried my BX4 in the process of combing it with my other > tasks!) > . > It is an adaptation of BS2 code from their "Industrial Controllers" > projects. The code succesfully controls a very high response and low > inertia system (1x1 inch thin copper plate heated by a 15 watt > heater) within 0.1deg C, despite the fact that the MAX6674 > thermocouple digitizer swings randomly +- 0.4 degC. > The method of control - PWM driven semiconductor CRAYDOM relay. > Anyone who is interested in the code - let me know. > > Cheers, > > Alex.

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I would like to look at the code also. thanks Richard ----- Original Message ----- From: "rrl2849" <> To: <> Sent: Thursday, May 16, 2002 12:09 PM Subject: [BasicX] Re: PID code finished. > I'd be interested in the code. I'm building a controller for my > small home brewery, and I'm currently using an Omoron PID > controller. I've got a BX24 interfaced to a LCD and Thermistor with > Crydom SSR's on the outputs. The program currently only supports a > thermostat type operation but I have PID code in the works. Thanks! > > Russ > > --- In basicx@y..., "biovirus1" <alex_chaihorsky@h...> wrote: > > Dear guys, > > > > I have finished and tested my new PID code for BX4 (although I seem > > to have fried my BX4 in the process of combing it with my other > > tasks!) > > . > > It is an adaptation of BS2 code from their "Industrial Controllers" > > projects. The code succesfully controls a very high response and > low > > inertia system (1x1 inch thin copper plate heated by a 15 watt > > heater) within 0.1deg C, despite the fact that the MAX6674 > > thermocouple digitizer swings randomly +- 0.4 degC. > > The method of control - PWM driven semiconductor CRAYDOM relay. > > Anyone who is interested in the code - let me know. > > > > Cheers, > > > > Alex.

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Alex, I would also like a peek at your code. Why not upload it in the files section. Thanks, -Rene > --- In basicx@y..., "biovirus1" <alex_chaihorsky@h...> wrote: > > Dear guys, > > > > I have finished and tested my new PID code for BX4 (although I seem > > to have fried my BX4 in the process of combing it with my other > > tasks!) > > . > > It is an adaptation of BS2 code from their "Industrial Controllers" > > projects. The code succesfully controls a very high response and > low > > inertia system (1x1 inch thin copper plate heated by a 15 watt > > heater) within 0.1deg C, despite the fact that the MAX6674 > > thermocouple digitizer swings randomly +- 0.4 degC. > > The method of control - PWM driven semiconductor CRAYDOM relay. > > Anyone who is interested in the code - let me know. > > > > Cheers, > > > > Alex. [Non-text portions of this message have been removed]

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Ability of different systems loose, gain or maintain temperature with different rates (depending on thermal conductivity, thermal mass, specific thermocapacity). Alex. --- In basicx@y..., "Richard Friedrich" <rfriedrich@a...> wrote: > thermal inertia ? is there such a thing ? > > richard > ----- Original Message ----- > From: "biovirus1" <alex_chaihorsky@h...> > To: <basicx@y...> > Sent: Thursday, May 16, 2002 7:43 AM > Subject: [BasicX] PID code finished. > > Dear guys, > > > > I have finished and tested my new PID code for BX4 (although I seem > > to have fried my BX4 in the process of combing it with my other > > tasks!) > > . > > It is an adaptation of BS2 code from their "Industrial Controllers" > > projects. The code succesfully controls a very high response and low > > inertia system (1x1 inch thin copper plate heated by a 15 watt > > heater) within 0.1deg C, despite the fact that the MAX6674 > > thermocouple digitizer swings randomly +- 0.4 degC. > > The method of control - PWM driven semiconductor CRAYDOM relay. > > Anyone who is interested in the code - let me know. > > > > Cheers, > > > > Alex. > > > > > > > > > > > > > > > > >

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Among other things I build proprietary (and as far as I know unique) instant holographic cameras (push of a button and 5 sec later you have a hologram that is already "etched". I use proprietary thermoplastic film that has to be heated and electrically charged inside the camera. The image is a ripple on the surface as opposed to black and white areas of the normal photo-film. The more precise the temperature the more consistent the results. I was using OMRON PID controllers before. Cheers, Alex. --- In basicx@y..., "Harry J. White" <hwhite@d...> wrote: > I may be interested in the code but at the moment I'm more interested in why > your controlling the temperature of that little copper plate. > > -----Original Message----- > From: biovirus1 [mailto:alex_chaihorsky@h...] > Sent: Thursday, May 16, 2002 8:43 AM > To: basicx@y... > Subject: [BasicX] PID code finished. > Dear guys, > > I have finished and tested my new PID code for BX4 (although I seem > to have fried my BX4 in the process of combing it with my other > tasks!) > . > It is an adaptation of BS2 code from their "Industrial Controllers" > projects. The code succesfully controls a very high response and low > inertia system (1x1 inch thin copper plate heated by a 15 watt > heater) within 0.1deg C, despite the fact that the MAX6674 > thermocouple digitizer swings randomly +- 0.4 degC. > The method of control - PWM driven semiconductor CRAYDOM relay. > Anyone who is interested in the code - let me know. > > Cheers, > > Alex. > > > Yahoo! Groups Sponsor > > ADVERTISEMENT <http://rd.yahoo.com/M=226020.2031982.3521154.1971030/D=egroupweb/S=17 065542 > 05:HM/A=1073422/R=0/*http://www.qksrv.net/click-1084497-610300? url=http://ww > w.tv/en/landing.shtml&HHcode=yhc3my2> > > <http://us.adserver.yahoo.com/l? M=226020.2031982.3521154.1971030/D=egroupmai > l/S=1706554205:HM/A=1073422/rand=837694864> > > > . > > > [Non-text portions of this message have been removed]

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I wouldn't mind taking a peak at the code, since it's adapted from my orignal BS2 code I guess :) Though I imagine the math is more elegant than I could achieve on the BS2. And maybe sometime this summer I can find time to adapt the StampPlot interactive PID interface that can be used with the BS2 version for GUI monitoring and control. http://www.selmaware.com/stampPlot/samples/ic.htm Thanks, -Martin --- In basicx@y..., "biovirus1" <alex_chaihorsky@h...> wrote: > Dear guys, > > I have finished and tested my new PID code for BX4 (although I seem > to have fried my BX4 in the process of combing it with my other > tasks!) > . > It is an adaptation of BS2 code from their "Industrial Controllers" > projects.

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