In terms of programming for arduino, we basically focused on the digital inputs an digital outputs for actuators like the dc motor, LED, etc. This was one of the primary things that we learned in arduino programming , next we also learned the importance of programming to interface to actuators. This actually helped me in my final design project since I had to interface three different sensors and three different actuators to my circuit . One of the interesting activity that we did was that we had to interface the LDR sensor to the LED , here the arduino programming helped me to interface the LDR sensor to the LED , where the when the LDR is touched the LED turns on and when the LDR sensor is exposed to the light the LED turns off , this was a simple interfacing activity that we did as a class, this kind of helped to create a template for all types of actuators that I could use in my project.