I'm trying to power 12 servo from an UNO board for my project and that works fine. But when it comes to connect a HC-05 bluetooth module to arduino too along with those servos in order to control servos through bluetooth, the whole set up gets messed up due to an unknown problem.
I even had a thought that if I can connect two arduinos out of which one would use bluetooth module and recieve serial input from my moblie app and transfer it to other one so as to control servos.
yes after running the code i realized that the board can only supply such power over a serial connection to my laptop only. Can anyone suggest a way to externally power all the servos at once?
It depends on how much current your servos draw. I've read people suggest it's not a good idea to power servos from a breadboard but I've used breadboards myself many times.
The main thing is to use a power supply capable of supplying enough current for all the servos you plan to use.
I've had better luck with batteries than I have using AC to DC regulators.
Don't have the servo power pass through the Arduino's PCB.
Ashes_adios:
yeah! and thats why i asked if anyone could help me find a battery to take that much load!
If your servos can tolerate the voltage, a 2S LiPo would be a good power source.
If your servos can't tolerate this higher voltage (and most can't) then you'll either need to use four or five NiMH cells or use a beefy voltage regulator with a multiple cell LiPo pack.
If you use NiMH cells, you'll probably need to use "C" cells. You could get away with using AA cells if you only use a couple servos per pack.
As I mentioned in the other threads I linked earlier, I generally use a big LiPo pack with high current regulators.
You haven't mentioned which servos you plan to use. Servos come in a lot of sizes. The power needs will depend on both the type of servos used and the load the servos will be under.
