# Sky-Drones SmartAP PDB

[SmartAP PDB](https://sky-drones.com/power/smartap-pdb.html) (Power Distribution Board) is used to simplify the distribution of power from one or more batteries to ESCs (motors), flight controller, and other peripherals.
It also acts as a [power module](../power_module/index.md), enabling battery voltage and current measurements.
SmartAP PDB makes connecting high-power lines easier and much more reliable.

![SmartAP PDB](../../assets/hardware/power_module/sky-drones_smartap-pdb/smartap-pdb-top-side.jpg)

## 사양

- Size: 65x65 mm, 4x M3 mounting holes
- Input voltage up to 60 Volts (14S)
- Capability to handle extremenly high currents (peak current up to 400A)
- Power input from the main battery, possibility to connect up to 2 independent batteries
- 12 pairs of pads (6 on top, 6 on bottom) for powering up to 12 motors
- Integrated voltage and current sensors with L/C filters
- Precise Hall Effect based current measurements
- Integrated DC-DC converter from 10-60 V input (up to 14S battery) to 5V / 5A output to power peripherals
- Integrated DC-DC converter from 10-60 V input (up to 14S battery) to 12V / 5A output to power peripherals
- 5V and 12V power output terminals (standard 2.54mm/0.1" connectors)
- Integrated electromagnetic sounder (buzzer)
- Power output for the flight controller (both 5V regulated and battery voltage level output)

## Size and Weight

- Length: 65mm
- Width: 65mm
- Height: 14mm
- Weight: 16g

## PX4 설정

[Battery Estimation Tuning](../config/battery.md) describes how to configure the battery setting for a power module.

The key configuration settings are:

- Voltage divider: 15.51
- Amps per volt: 36.00

## 구매처

[SmartAP PDB](https://sky-drones.com/parts/smartap-pdb.html)

## Wiring / Pinout

SmartAP Power Distribution Board pinout diagram is shown below.

![SmartAP PDB](../../assets/hardware/power_module/sky-drones_smartap-pdb/smartap-pdb-pinout.png)

The two big pads are intended for the main battery connection.
Up to two independent batteries can be connected using the thick wires (e.g. 8-10 AWG) to be able to handle high current loads and higher total capacity.
Up to 12 ESCs can be connected using the 6 smaller pads on top, bottom, left and right sides.

## Voltage and current sensors

SmartAP PDB has integrated voltage and current sensors.
The current sensor is located on the bottom side of the PDB.

![SmartAP PDB](../../assets/hardware/power_module/sky-drones_smartap-pdb/smartap-pdb-current-sensor.png)

## 추가 정보

- [Buy SmartAP PDB](https://sky-drones.com/power/smartap-pdb.html)
- [Documentation](https://docs.sky-drones.com/avionics/smartap-pdb)