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Old Dec 14, 2012, 04:01 PM
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United Kingdom, Bristol
Joined Aug 2008
1,774 Posts
Question
Arduino Switch between to 2 serial pins

Well what i'd like to do:
I would like to switch between 2 serial pins to center pin, basically 2 pole double throw switch but use Uno to do the switching. I could use 2PDT switch but want to see usable it could be to have arduino do it for me and adjust the speed of swap.

Could i just use pair of PNP or NPN (not sure which) and 10k pot to adjust speed ?
Switch would do it but need another hand Don't have relay or anything like.

Just unsure how to go ?? Help )
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Old Dec 15, 2012, 04:22 AM
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Spain, Community of Madrid, San Sebastián de los Reyes
Joined Dec 2012
181 Posts
you could use a reed switch.
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Old Dec 15, 2012, 02:23 PM
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United Kingdom, Bristol
Joined Aug 2008
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I would but don't have any at min.

Well i used PNP first while would switch one side wouldn't other. I had hoped i could use NPN which works both sides . NPN PNP drive them with only 1 pin from uno. While it would drive two LEDs on/off wouldn't work with my multiwii.....maybe i hooked it up wrong.
Next i use 2 NPN and 2 pin from uno...
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