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Help needed to modify the propeller display project

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Moderators: Ajay Bhargav, Arun Kumar V, pdi33, Shailesh NAYAK, ۞ TPS ۞, shyam, sashijoseph, ExperimenterUK, DavesGarage, majoka

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Shehwar

Thu Sep 22 2011, 10:59AM

Registered Member #35140

Joined: Tue Aug 09 2011, 11:28PM
Location (Home Town): Mumbai
Posts: 26

everything is 4m the list in the downloaded file.
My motor is of 2000 rpm

majoka

Thu Sep 22 2011, 02:33PM

Registered Member #22104

Joined: Thu Sep 10 2009, 03:04PM
Location (Home Town): Wah Cantt, Pakistan
Posts: 3900

@ Shehwar
motor rpm is not an big issue
may be interrupts are not working properly that making a display too flickery
try to reduce voltage to low so motor run slow and interrupt occur after some time or check interrupt circuit separately that it is working now or not

Shehwar

Fri Sep 23 2011, 02:15PM

Registered Member #35140

Joined: Tue Aug 09 2011, 11:28PM
Location (Home Town): Mumbai
Posts: 26

i made a seperate board for interrupt using the test ckt schematic. I tested it before connection. It(transistor o/p) goes low when moc is blocked.

Shehwar

Sat Sep 24 2011, 03:29AM

Registered Member #35140

Joined: Tue Aug 09 2011, 11:28PM
Location (Home Town): Mumbai
Posts: 26

ajay bro i tried assembling the ckt on breadboard and i get the same output without any response from interrupter. I mean that when i connect the ckt and supply 5v, the leds start blinking periodically. I think someone else also had this problem.

majoka

Sat Sep 24 2011, 01:23PM

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Joined: Thu Sep 10 2009, 03:04PM
Location (Home Town): Wah Cantt, Pakistan
Posts: 3900

@ Shehwar
that leds make some sense of display or it is random
may be crystal is damage that running code too slow

Shehwar

Mon Sep 26 2011, 03:59AM

Registered Member #35140

Joined: Tue Aug 09 2011, 11:28PM
Location (Home Town): Mumbai
Posts: 26

so what should i do ?
I need to make one for college also.

I came across a propeller clock using pic the other day. But i am unable to understand its supply issue. Can you help me out ? Here is the address

www.bobblick.com/techref/projects/propclock/propclock.html

Shehwar

Tue Sep 27 2011, 01:04AM

Registered Member #35140

Joined: Tue Aug 09 2011, 11:28PM
Location (Home Town): Mumbai
Posts: 26

the mode of supply he used was by using 2 coils of calculated length and gauge and then he setup a dc rectifier network for the supply.
I am getting confused with the calculus. As per what requirement did he setup the coils ?
And in what way is the supply given in the project on the forum ?
PLEASE HELP.:(

majoka

Tue Sep 27 2011, 07:44AM

Registered Member #22104

Joined: Thu Sep 10 2009, 03:04PM
Location (Home Town): Wah Cantt, Pakistan
Posts: 3900

@ Shehwar
it is better that u trouble shoot the last one u make instead of making a new
the new one will also has some problem so then u will face difficulties so its better that u trouble shoot this one

Shehwar

Tue Sep 27 2011, 08:12AM

Registered Member #35140

Joined: Tue Aug 09 2011, 11:28PM
Location (Home Town): Mumbai
Posts: 26

but how should i ?
I rechecked the tracks all of them are working fine. What i dont understand is that why are the leds blinking on their own ? The pattern doesnt make any sense but it looks periodic when stationary. And when you rotate it, it just appears to be continuously on all the time. Should i re-programme the IC ?
I am also unable to figure out whether the moc is getting properly blocked or not.

majoka

Tue Sep 27 2011, 10:52AM

Registered Member #22104

Joined: Thu Sep 10 2009, 03:04PM
Location (Home Town): Wah Cantt, Pakistan
Posts: 3900

@ Shehwar
it can also be a moc problem check now is it working or not
as u check it independently but now check it witj ur all cicuit is it working or not now
also replace a controller with new one program that and see the results
man members make it with no problem ru using hex file with ur own or that is in the download section
ru compiling it in keil or any other compiler i think that is for other compiler

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