This blog lists the various Power Distribution boards available for RC drones (quadcopters, hexacopters, octocopters, etc.).
See also Drone kit – ZMR250 PDBs.
A Power Distribution Board (PDB) is a useful item, which is basically a PCB that can distribute power to the ESCs. More complex PDBs can also distribute power to other components, such as LEDs, FPV cameras, as well as signals from flight controllers. These more complex types can also be integrated into the drone’s main body plate. PDBs will also have a maximum current rating, so be sure to choose one that matches firstly the maximum combined current drawn by your ESCs, and secondly, the combined current drawn by your other peripherals.
There is this, APM 3 in 1 Voltage Current Sensor BEC Connection Power Distribution Board for £15, which seems to support up to 8 motors (octocopter)
- Using imported KEMET Tantalum electric capacity to reduce ripple and interference for flight controller
- 5.3V voltage for flight control board
- Two-way 12V output for photography transmission and Gimbal (Supporting 4-6S)
- Available to detect the output current and remain voltage, both of them can be displayed on OSD screen and radio control.
Hexacopter Power Distribution Boards
Gryphon Hexacopter Power Distribution Board GPD-1000HXP, £44.99 + £1.50
Octocopter Power Distribution Boards
Gryphon Dynamics Octocopter Power distribution Board & BEC Board, £67.42 + £6.83