Adding a shield to a shield

Using Arduino Project Guidance
1

I am using an Arduino Uno with an L293D Motor Drive Shield. I need more inputs for sensors, and was wondering if there is an add on for this. I need something that will give me an additional 4 inputs.

Thanks

2

If it's this one from Adafruit Arduino Playground - AdafruitMotorShield then spare pins (A0 to A5 for example) are available for soldering wires to.

3

As far as I know, a motor driver shield does not use all pins; for you to find out which ones are free :wink:

Next you can put something like below between the Uno and the L293D shield.

4