Submitted by Karthick S on Fri, 12/30/2016 - 11:40

I am developing an arduino project with LCD module, RFID tags and reader, Rover motor cars. I'm using ARDUINO UNO board but I could not able to connect the pins appropriately due to shortage of pins and for different modules same pins are used. How can I solve this problem?

Hi Karthick,

If the pins you are running on shortage are just normal I/O pins or Analog pins then you can simply use a Multiplexer. 

You have to select a proper MUX based on your requirement, if they are just normal digital high or low digital MUX will work, but  if you are looking for analog inputs you must use a analog MUX..


1.If yo have your analog pins free (A0-A7) free on your Arduino then you can also use them as Digital pins.

2. Uno has only one set of Rx/Tx pins, if you want more you can try the software serial librarey.


Hope this helps!! 


  Joined August 16, 2016      997
Tuesday at 12:29 AM