Hello !
I wanted to know if it’s possible to use Lipoly battery packs to feed scc-32 . They have a voltage of 7.4 V . The servos are Hitec servos functioning with a voltage of 6 V . Could it work ?
Thank you !
Radio control servos are often run on NiCd/NiMH packs that are rated at 7.2 volts.
The SSC-32 has an internal voltage regulator that pins the logic supply to 5 volts.
A 7.4 volt pack should pose no real problems.
You might wish to run the logic from its own supply though, so that it doesn’t brown out when the servos draw a lot of juice.
You might want to make certain your lipo battery is rated to handle the peak current your servos can pull simutaneously. In an r/c airplane it might only be 5 or 6 servos typical, an SSC-32 can control up to 32 which could be a LOT more current. Just advising caution so you don’t inadvertently kill your pack(s).
I’d like to separate the supply for the servos and the supply for the board .
However, which is the voltage arriving to the servos if I separate the supplies ? 5V or 6V ?
ther servos receive the VS1 and VS2 voltages (1-16 get VS1, 17-32 get VS2, or the other way around and I forget which) and the regulator for the logic on the ssc-32 gets the VL. You can use the jumper blocks on the board to tie these together or just supply them individually. It is not uncommon for folks to use their big battery pack on VS1 and VS2 to power the servos and then use a small 9V battery for the VL supply (since it will get regulated down to the 5V needed by the ssc-32.)