Arduino Nano's RX0 and TX1 pin as digitial I/O

Using Arduino Programming Questions
1

Hi,

Now my application requires more digital IOs, so how can I use RX and TX pin of Arduino Nano as a digital IO.

Also, there are two RESET pins on NANO. So, Can I use one of them as digital IO because following diagram in attachment indicate RESET pin is also a Port Pin.

Best Regards,
Ajinkya Shinde

nanopdf.png
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2

You can just use D0, D1 for extra IO. Unless you are using them for Serial to the PC already.

Both Reset pins are the same signal. If you use it, and you have to change a fuse to be able to use it, you will not be able to load code anymore.

3

You can just use D0, D1 for extra IO. Unless you are using them for Serial to the PC already.

Both Reset pins are the same signal. If you use it, and you have to change a fuse to be able to use it, you will not be able to load code anymore.

4

Sounds like you might be ready to move up to a 1284P board with 32 IO.
I offer boards in several form factors:
http://www.crossroadsfencing.com/BobuinoRev17/
This small DIP layout for example.

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5

Hi CrossRoads,

Thank you so much for above post. It just gave me a little relaxation, because currently I am short of two GPIO pins.Also I will share above link with my Team Leader for more GPIO's board solution.

Best Regards,
Ajinkya

6

Are you already using all of the analogue pins ?

7