• Emergency!

    Hello everyone, I'v been given a school project:

      

           calculate the gravity of earth using two sensors to estimate the time needed for a free falling object to go from sensor1 to sensor 2.

    Now, I'm gonna use 2 photoresistors and 2 lasers ,can anyone suggest…

  • Servos and coding

    Hi, so I'm new to the Arduino, I've done only one project so far and now -with my second..I ran into some trouble-

     

    I am tring to make my robot arm do  something repeatedly - like a Factory robotic arm - assembling stuff.The problem is that I have…