Hello everybody,
I am a beginner and I would like to know if it is possible to connect two servo motors Power HD 1235MG model, on the Arduino UNO board.
I did some tests but with negative results.
Do you have any suggestions for me?
I thank you for the time that you can devote to me.
Hi,
You can control 2 servos with the UNO, however you need to provide a separate power supply for the servos.
The arduino cannot supply the current needed, neither can the USB port of your PC.
When you use a separate servo power supply, you must connect the gnd of the UNO to the gnd or neg of the servo supply, so that you have a gnd reference for the servo control signal.
Hope this helps.. Tom.. 
Thanks so much for your help, TomGeorge. The two servo motors work now