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need help picking components

l1t7l3ph0o7

Ok I have a project that requires 3 pwm outputs and two digital inputs

I'm looking for an 8-pin MCU where i can just analogWrite to the PWM pins instead of mucking around with software PWM.

 

I've tried the attiny45, but have had no succcess with pwm on three pins, the closest i can get makes one of the inputs high, and i need that input for a button.

Aslo i need to be able to program it with my arduino uno, I see i can program lots of chips with the arduino, so i don't forsee that to be a problem.

 

also using the PWM pins I intend to control three mosfets to control 1 meter 30 led 12v led strip i got from sparkfun.com, and I would like to find a one chip solution to do that, or at least find another way to make the circuit smaller.

 

I am open to using bigger chips, though I need to keep the circuitboard small, it has to fit in a very tight place.

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    Just to elaberate, I am new to arduino and programming, I would like to learn as much as I can about it, And this is my very first project that I really want to see to the end!

     

    I have written a program that works (almost) perfectly, when I upload it to the arduino uno. I say almost because there is one unexpected behavior, but it's no big deal.

    When I upload it to my ATTINY45, I get irratic behavior, that I beleive is due to limitations of the chip?

    I'm not trying to accomplish a lot, but I have been racking my brain trying to figure this out.

     

    The only thing I do different between the arduino and the ATTTINY45 is re-assign the pins before I upload the sketch.

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  • 0

    Just to elaberate, I am new to arduino and programming, I would like to learn as much as I can about it, And this is my very first project that I really want to see to the end!

     

    I have written a program that works (almost) perfectly, when I upload it to the arduino uno. I say almost because there is one unexpected behavior, but it's no big deal.

    When I upload it to my ATTINY45, I get irratic behavior, that I beleive is due to limitations of the chip?

    I'm not trying to accomplish a lot, but I have been racking my brain trying to figure this out.

     

    The only thing I do different between the arduino and the ATTTINY45 is re-assign the pins before I upload the sketch.

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