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Topic: expansion i/o board (Read 1 time) previous topic - next topic

collyd21

hi im looking for an expansion board which will give me more than the original 13 pins i have on my Uno, anyone suggest one?

MichaelMeissner

#1
Jul 30, 2012, 11:30 pm Last Edit: Jul 30, 2012, 11:32 pm by MichaelMeissner Reason: 1

hi im looking for an expansion board which will give me more than the original 13 pins i have on my Uno, anyone suggest one?

If you just need up to 6 more outputs, and have free analog input pins, you could use A0-A5 as outputs.  Note, on boards with more than 6 analog input pins, I think you can't use the higher pins for outputs, but I'm not sure.

Rather than getting an expansion shield, you could upgrade your UNO to a Mega where you have 54 output pins (15 of which can be PWM), and 16 analog input pins.

For simple output, I did see this shield in searching the web: http://nootropicdesign.com/ez-expander/.

Another way to expand is to switch to using SPI or I2C which are serial buses for hooking up more pins.

collyd21

thanks for the link and suggestions :)

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