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 Post subject: Lab 4 LED Challenge
PostPosted: Fri Nov 01, 2013 9:20 pm 
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Joined: Tue Oct 22, 2013 6:52 pm
Posts: 4
Has anyone successfully completed this challenge? I'm mostly sure I have my circuit set up properly but there seems to be no current coming from pins PB0-PB3 when the motor is at 255 in the GUI.


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 Post subject: Re: Lab 4 LED Challenge
PostPosted: Wed Nov 06, 2013 7:48 pm 
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Joined: Wed Nov 06, 2013 7:43 pm
Posts: 1
Timothy B wrote:
Has anyone successfully completed this challenge? I'm mostly sure I have my circuit set up properly but there seems to be no current coming from pins PB0-PB3 when the motor is at 255 in the GUI.


We had someone experience the same problem in our lab, and the solution was that the pins listed in the lab manual are not actually correct. The pins that change voltage as the speed increases are pins F4-F7. Try those and it should work.
Kaden Montague


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 Post subject: Re: Lab 4 LED Challenge
PostPosted: Thu Nov 07, 2013 8:14 pm 
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Joined: Wed Oct 16, 2013 12:01 pm
Posts: 4
Yep, mine works now, but when I turn the speed to full reverse, the top three cut out. They work when the motor is going forward, and they light up normally up to around 90%, it's just that last little bit that they act funny. Did you get yours to work correctly?


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 Post subject: Re: Lab 4 LED Challenge
PostPosted: Fri Nov 08, 2013 5:35 pm 
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Joined: Tue Oct 22, 2013 6:52 pm
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janzeng wrote:
Yep, mine works now, but when I turn the speed to full reverse, the top three cut out. They work when the motor is going forward, and they light up normally up to around 90%, it's just that last little bit that they act funny. Did you get yours to work correctly?

I might have the same problem as you now. I'm going to work on it over the weekend and see if I can get it working.


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 Post subject: Re: Lab 4 LED Challenge
PostPosted: Tue Nov 12, 2013 5:44 pm 
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Joined: Tue Oct 22, 2013 6:52 pm
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Yeah my lights work except for the last little bit where the top 3 flicker.


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 Post subject: Re: Lab 4 LED Challenge
PostPosted: Wed Nov 13, 2013 9:11 am 
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Joined: Wed Oct 16, 2013 12:01 pm
Posts: 4
Do you think it could be the resistors? I'm using 1k ohm ones. Which ones are you using?


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