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OS Wig-Wag Project

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nuckolls.bob(at)aeroelect
Guest

Posted: Mon Jun 25, 2012 9:51 am Post subject: OS Wig-Wag Project

Greg,



 Been up to my fanny in loft beds and plumbing but

 while plying the asphalt between here and Wichita

 I came up with this idea for getting "more" from

 the OS wig-wag module.



 How about two switches labeled LANDING and TAXI.

 Have each switch provide an active LO to produce

 an action on the two lights as follows:



 

 [img]cid:.0[/img]

 This would give the builder/installer the option of

 both on steady or wig-wag depending on a difference

 in paired or separate selection of the two switch

 positions. If in single lamp operation, the switches

 would both have to be placed at off and the simultaneously

 placed to ON to switch to Wig-Wag. Otherwise, the two

 switches independently control their respective lamps

 in steady-on operation.



 

   Bob . . .

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gregmchugh

Joined: 03 Apr 2012
Posts: 42

Posted: Mon Jun 25, 2012 2:32 pm Post subject: Re: OS Wig-Wag Project

Bob,



That seems to be a good solution. I will spin a version of the

software for this and send another PIC chip along to you.

Probably sent off to you by the end of the week.



Greg McHugh

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gregmchugh

Joined: 03 Apr 2012
Posts: 42

Posted: Sun Jul 01, 2012 9:33 am Post subject: Re: OS Wig-Wag Project

Bob,



I have a new version of the software that implements the new

control logic and can flash it into a PIC and send it along. I

tested it on a breadboard and it seems to be working fine.

I need to change the sample board you sent to have 

individual switches on the two control lines which I will

probably do sometime this week and then I will test the

new version on that board. In any case I will be able to

send a new PIC chip along to you this week that has the

new logic that you can use for your testing.



Greg McHugh

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nuckolls.bob(at)aeroelect
Guest

Posted: Sun Jul 01, 2012 1:15 pm Post subject: OS Wig-Wag Project

 	  Quote: 	
		  In any case I will be able to

send a new PIC chip along to you this week that has the

new logic that you can use for your testing.



Greg McHugh


	


   Cool! I'll stuff another board here and

   confirm. Next are the temperature rise studies

   to see just how much current the present board

   configuration should be rated for.

   Bob . . .

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gregmchugh

Joined: 03 Apr 2012
Posts: 42

Posted: Mon Jul 02, 2012 1:12 pm Post subject: Re: OS Wig-Wag Project

Bob,



I mailed the new PIC chip off today. Here is the source code for this

version with the new control logic using separate switches for each 

lamp.



Greg McHugh

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wigwag.c

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nuckolls.bob(at)aeroelect
Guest

Posted: Mon Jul 02, 2012 8:29 pm Post subject: OS Wig-Wag Project

At 04:12 PM 7/2/2012, you wrote:

 	  Quote: 	
		  



Bob,



I mailed the new PIC chip off today. Here is the source code for this

version with the new control logic using separate switches for each

lamp.



Greg McHugh


	


  Just out of curiosity, how much memory did it

  take of the total to make it play?

   Bob . . .

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gregmchugh

Joined: 03 Apr 2012
Posts: 42

Posted: Tue Jul 03, 2012 9:12 am Post subject: Re: OS Wig-Wag Project

Bob,



Below is the memory usage summary. As shown, the PRO compiler

($1195) provides optimization compared to the free LITE version I am

using.



Currently I am using 22.9% of the 2K bytes of program memory and

39% of the 128 bytes of data memory. Not using any of the 256

bytes of EEPROM memory at the moment.



Lots of ways to reduce memory usage if you get near the limit but

we probably will not get near it for most of the types of applications

we have discussed so far.



Greg McHugh



-------------------------------------



Memory Summary:

    Program space        used   1D4h (   468) of   800h words   ( 22.9%)

    Data space           used    32h (    50) of    80h bytes   ( 39.1%)

    EEPROM space         used     0h (     0) of   100h bytes   (  0.0%)

    Configuration bits   used     1h (     1) of     1h word    (100.0%)

    ID Location space    used     0h (     0) of     4h bytes   (  0.0%)

Running this compiler in PRO mode, with Omniscient Code Generation

enabled, produces code which is typically 40% smaller than in Lite mode.

The HI-TECH C PRO compiler output for this code could be 187 words

smaller.



--------------------------------

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