This type of (buck) step-down voltage regulator is able to take 2S to 5S and transform it to 5 volts - it is switchable to 12volts also for 4S to 5S. These ubits are often called a “Battery Elimination Circuit” (BEC). Also have a small red LED to show operation.
Replacement PDB for your Armadillo and Armadillo PUP. This one is the Replacement of the Standard...
F1-5/6 INTEGRATED POWER BOARD Integrated power Distribution Board for F1-5 and F1-6 quads
New from Armattan A simple PDB with 5v and 12 v Regs. Easy to install...