PDB

Preamble

This blog lists the various Power Distribution boards available for RC drones (quadcopters, hexacopters, octocopters, etc.).

Summary

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.

Various PDBs

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)

Voltage and current Sensor/BEC/PDBq — Voltage and current Sensor/BEC/PDB

Features:

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.