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Re: Need to get 4 independently controllable frequency outputs, PBP can do that?
I need 4 outputs simultaneously, at different frequencies and w/o putting any load into "main" code execution.
PCA9685 can output different dutycycle, but not frequency. There are a lot of such IC's with adjustable separate duty cycle, but not frequency (I even have 48 channel monster - LT8500)
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Re: Need to get 4 independently controllable frequency outputs, PBP can do that?
The only suitable chips I've found are FM synthesis chips from early computer soundcards, like Yamaha YMF262 or AY-3-8910But they require extra periphery and are loaded with unnecessary bells and whistles. Looks like CD4536B (4 of them) is the best choice so far.
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Re: Need to get 4 independently controllable frequency outputs, PBP can do that?
Nice chip this seems. But could not figure out how to use it as an PWM.
Ioannis
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Re: Need to get 4 independently controllable frequency outputs, PBP can do that?
I don't need PWM, I need frequency
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Re: Need to get 4 independently controllable frequency outputs, PBP can do that?
4 separate PIC's with NCO modules. Done..... Why add unnecessary hardware?
Dave Purola,
N8NTA
EN82fn
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Re: Need to get 4 independently controllable frequency outputs, PBP can do that?
I have a project I was using 3 PICs for 3 NCOs. I updated it adding a touch screen to replace buttons & LEDs, and while at it, replaced 3 PICs with a single PIC18F27Q43 (have to use MPLABX & XC8 since PBP doesn't yet cover that part). That still leaves one more NCO for you.Originally Posted by Dave
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Re: Need to get 4 independently controllable frequency outputs, PBP can do that?
and 3 extra PIC chips does not count as extra hardware, but CD4536 does?
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