06-06-2011, 08:23 AM
If you have a BEC with enough current, you could just plug it into the RX BATT port and power all the servos and the RX with the separate supply.
Powering some of the servos from a separate supply needs you to sharethe ground connection to ensure all the electronics has the same ground and disconnect the power wire. THe reason for this is that the signal to the servo comes from the receiver and is relative to the receiver ground. Unless they have a common ground, the servo will not "understand" the signal bcs it may not be at a level relevant to its own ground.
Much simpler with diagrams. If you specify the servos and power scheme, I could whip up a matching diagram.
Powering some of the servos from a separate supply needs you to sharethe ground connection to ensure all the electronics has the same ground and disconnect the power wire. THe reason for this is that the signal to the servo comes from the receiver and is relative to the receiver ground. Unless they have a common ground, the servo will not "understand" the signal bcs it may not be at a level relevant to its own ground.
Much simpler with diagrams. If you specify the servos and power scheme, I could whip up a matching diagram.
Drew
Code:
---------------------------------------------------------------------
Built-up
Balsa: Commercial: Depron:
Great Planes PT-20 (modified) HK Hawk 80 Index 3
Indoor Thingy Skyartec Cessna 182
Katana X lite (in construction) UM SU-26 12"WS Shoestring (Plantraco)
HK Extra 260
and a Fox chuck glider converted to RC
---------------------------------------------------------------------