Simplest/Smallest Arduino to use for my project?

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hello all,
i'm planning rgb led strip controller using potentiometers control each colour channel separately.
obviously i'd need arduino @ least 3 pwm outputs. 
which arduino cheapest/smallest/simplest use project?  can programmed via usb please.

i thinking along lines of nano v4 or a-star 32u4?

thanks
neal


you program stand-alone avr chip arduino , keep board.

an attiny44 has 3 pwm pins, example, , costs bit less atmega328p.

mit high-low tech attiny page.

make own duinos, complete tutorial software make regular , mighty-1284 duinos:
www.gammon.com.au/breadboard

how smart end product need be?

the low end..... ideas shown, evolution version.
http://make.kosakalab.com/arduino/obaka/project-2/index_en.html


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