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How to Use PDB-HEX: Examples, Pinouts, and Specs
Design with PDB-HEX in Cirkit DesignerIntroduction
The PDB-HEX by MATEKSYS is a hexagonal Power Distribution Board (PDB) designed for use in multirotor aircraft and other RC hobby projects. It simplifies the power distribution from the main battery to multiple electronic speed controllers (ESCs) and provides additional connectivity for auxiliary power needs. Its unique hexagonal shape is optimized for hexacopter configurations but can be adapted for other layouts.
Explore Projects Built with PDB-HEX
Arduino 101 Based Water Quality Monitoring System with LCD Display
This circuit features an Arduino 101 microcontroller connected to various sensors and an LCD display. The Arduino collects data from a temperature sensor and a TDS (Total Dissolved Solids) sensor, and it controls a pH sensor module (ph4502c). The collected data is likely displayed on the 16x2 LCD screen, which communicates with the Arduino via I2C. A buck converter steps down the voltage from a 12V power supply to power the Arduino and the sensors.
Open Project in Cirkit DesignerArduino Mega 2560 Controlled Environmental System for Aquatic and Hydroponic Management
This circuit is designed for environmental control and monitoring, possibly for a hydroponic or aquaculture system. It uses an Arduino Mega 2560 to read from sensors (pH, temperature, ultrasonic) and control actuators (water heater, Peltier module, water pump, solenoid valve) via relays, with an I2C LCD for display and a buzzer and LED for alerts.
Open Project in Cirkit DesignerBattery-Powered FPV Drone with Telemetry and Dual Motor Control
This circuit appears to be a power distribution and control system for a vehicle with two motorized wheels, possibly a drone or a robot. It includes a lipo battery connected to a Power Distribution Board (PDB) that distributes power to two Electronic Speed Controllers (ESCs) which in turn control the speed and direction of the motors. The system also integrates a flight controller (H743-SLIM V3) for managing various peripherals including GPS, FPV camera system, and a telemetry link (ExpressLRS).
Open Project in Cirkit DesignerArduino UNO Based pH Meter with LCD Display and Indicator LEDs
This circuit is designed to measure the pH level of a solution and display the value on an LCD screen. It uses an Arduino UNO microcontroller to read the pH sensor's signal and control three LEDs (yellow, green, blue) to indicate the pH level: yellow for acidic (pH < 5), green for neutral (pH 5-8), and blue for basic (pH > 8). The LCD displays a welcome message on startup and then continuously updates with the current pH value.
Open Project in Cirkit DesignerExplore Projects Built with PDB-HEX
Arduino 101 Based Water Quality Monitoring System with LCD Display
This circuit features an Arduino 101 microcontroller connected to various sensors and an LCD display. The Arduino collects data from a temperature sensor and a TDS (Total Dissolved Solids) sensor, and it controls a pH sensor module (ph4502c). The collected data is likely displayed on the 16x2 LCD screen, which communicates with the Arduino via I2C. A buck converter steps down the voltage from a 12V power supply to power the Arduino and the sensors.
Open Project in Cirkit DesignerArduino Mega 2560 Controlled Environmental System for Aquatic and Hydroponic Management
This circuit is designed for environmental control and monitoring, possibly for a hydroponic or aquaculture system. It uses an Arduino Mega 2560 to read from sensors (pH, temperature, ultrasonic) and control actuators (water heater, Peltier module, water pump, solenoid valve) via relays, with an I2C LCD for display and a buzzer and LED for alerts.
Open Project in Cirkit DesignerBattery-Powered FPV Drone with Telemetry and Dual Motor Control
This circuit appears to be a power distribution and control system for a vehicle with two motorized wheels, possibly a drone or a robot. It includes a lipo battery connected to a Power Distribution Board (PDB) that distributes power to two Electronic Speed Controllers (ESCs) which in turn control the speed and direction of the motors. The system also integrates a flight controller (H743-SLIM V3) for managing various peripherals including GPS, FPV camera system, and a telemetry link (ExpressLRS).
Open Project in Cirkit DesignerArduino UNO Based pH Meter with LCD Display and Indicator LEDs
This circuit is designed to measure the pH level of a solution and display the value on an LCD screen. It uses an Arduino UNO microcontroller to read the pH sensor's signal and control three LEDs (yellow, green, blue) to indicate the pH level: yellow for acidic (pH < 5), green for neutral (pH 5-8), and blue for basic (pH > 8). The LCD displays a welcome message on startup and then continuously updates with the current pH value.
Open Project in Cirkit DesignerCommon Applications and Use Cases
- Power distribution in multirotor aircraft, particularly hexacopters
- RC hobby projects requiring multiple power connections
- Robotics and DIY electronics requiring centralized power management
Technical Specifications
Key Technical Details
- Input Voltage Range: 3S to 6S LiPo
- Continuous Current: Up to 30A per output
- Max Current (Burst): 35A for 10 seconds
- BEC Output: 5V/3A regulated output for peripherals
- Dimensions: Edge-to-edge diameter of 50mm
- Mounting Holes: 3mm diameter, equidistant on the hex perimeter
Pin Configuration and Descriptions
| Pin Number | Description | Voltage/Signal | Max Current |
|---|---|---|---|
| 1 | Battery Input (+) | 3S-6S LiPo | - |
| 2 | Battery Input (-) | Ground | - |
| 3-8 | ESC Power Outputs (+) | 3S-6S LiPo | 30A |
| 9-14 | ESC Power Outputs (-) | Ground | 30A |
| 15 | BEC 5V Output (+) | 5V | 3A |
| 16 | BEC 5V Output (-) | Ground | 3A |
Usage Instructions
How to Use the PDB-HEX in a Circuit
- Battery Connection: Connect the main battery leads to the designated battery input pads on the PDB-HEX. Ensure proper polarity.
- ESC Connections: Solder the positive and negative wires of each ESC to the corresponding output pads on the PDB-HEX.
- BEC Connection: Utilize the 5V BEC output to power peripherals such as flight controllers, receivers, or FPV gear. Ensure the total current draw does not exceed 3A.
Important Considerations and Best Practices
- Polarity: Always double-check polarity before powering up to prevent damage.
- Soldering: Use high-quality solder and flux for reliable connections.
- Insulation: Insulate exposed solder joints with heat shrink tubing or electrical tape.
- Current Ratings: Do not exceed the specified current ratings to avoid overheating and potential failure.
- Mounting: Secure the PDB-HEX to the frame using non-conductive standoffs to prevent shorts.
Troubleshooting and FAQs
Common Issues
- Power Distribution Issues: Ensure all solder joints are secure and free of cold solder joints.
- Overheating: If the PDB-HEX overheats, check for overcurrent conditions or short circuits.
- Voltage Drops: Use thicker wires for high current paths to minimize voltage drops.
Solutions and Tips for Troubleshooting
- Visual Inspection: Regularly inspect the PDB for any signs of damage or wear.
- Current Monitoring: Use a multimeter to check for excessive current draw.
- Short Circuit Testing: Perform continuity tests with a multimeter to identify potential shorts.
FAQs
Q: Can the PDB-HEX be used with a 4S battery? A: Yes, the PDB-HEX supports a voltage range from 3S to 6S LiPo batteries, including 4S.
Q: Is it possible to use the PDB-HEX for a quadcopter? A: While designed for hexacopters, the PDB-HEX can be adapted for quadcopters; simply leave two of the ESC outputs unused.
Q: How do I know if the BEC is working? A: You can measure the output voltage with a multimeter; it should be a stable 5V.
Q: What is the maximum number of peripherals I can connect to the BEC? A: The number of devices is limited by the 3A current rating of the BEC. Calculate the total current draw of your peripherals to ensure it does not exceed this limit.
Note: This documentation is provided for informational purposes only. MATEKSYS is not responsible for any damage or injury resulting from the use or misuse of this product. Always follow proper safety protocols when working with electronic components.