How to Use Matek 12S-PRO BEC: Examples, Pinouts, and Specs

Design with Matek 12S-PRO BEC in Cirkit Designer

Introduction

The Matek 12S-PRO BEC is a high-performance battery eliminator circuit (BEC) designed to provide a stable and reliable output voltage for powering servos, flight controllers, and other onboard electronics. It is specifically engineered for use in multi-rotor drones and fixed-wing aircraft, where high-voltage battery packs (up to 12S LiPo) are commonly used. By stepping down the voltage from the battery pack, the Matek 12S-PRO BEC eliminates the need for separate power sources, reducing weight and complexity in your setup.

Explore Projects Built with Matek 12S-PRO BEC

Battery-Powered Servo Control System with 2S 30A BMS and TP5100 Charger

This circuit is a battery management and charging system for a 2S lithium-ion battery pack, which powers multiple MG996R servos. The TP5100 module charges the battery pack from a 12V power supply, while the 2S 30A BMS ensures safe operation and distribution of power to the servos.

Open Project in Cirkit Designer

Arduino-Controlled Quadcopter with GPS and NRF24L01 Wireless Communication

This circuit is designed for a quadcopter control system. It features an Arduino Pro Mini as the central microcontroller, interfacing with a GPS module for positioning, an NRF24L01 module for wireless communication, and an MPU-6050 for motion sensing. Power regulation is managed by an MP1584EN board, and four electronic speed controllers (ESCs) are connected to brushless motors for propeller control.

Open Project in Cirkit Designer

Battery-Powered Arduino Pro Mini Servo Controller with INA3221 Monitoring

This circuit features an Arduino Pro Mini microcontroller interfaced with various sensors and actuators, including servo motors and transistors, for control and monitoring purposes. It includes a Battery Management System (BMS) for managing multiple lithium-ion batteries and an INA3221 sensor for current and voltage monitoring. The circuit is designed for applications requiring precise control and power management.

Open Project in Cirkit Designer

GPS-Enabled Telemetry Drone with Speedybee F405 WING and Brushless Motor

This circuit is designed for a remote-controlled vehicle or drone, featuring a flight controller that manages a brushless motor, servomotors for actuation, telemetry for data communication, and a GPS module for positioning. It is powered by a lipo battery and includes a receiver for remote control inputs.

Open Project in Cirkit Designer

Common Applications and Use Cases

Powering servos, flight controllers, and receivers in drones and RC aircraft.
Providing a stable voltage supply for FPV (First-Person View) systems.
Supporting high-voltage battery packs (up to 12S LiPo) in multi-rotor and fixed-wing platforms.
Reducing the need for additional power supplies in compact or weight-sensitive designs.

Technical Specifications

Key Technical Details

Input Voltage Range: 9V to 60V (3S to 12S LiPo)
Output Voltage Options: Selectable 5V, 9V, 12V, or adjustable (via potentiometer)
Maximum Output Current: 5A continuous, 6A peak
Efficiency: Up to 95% (depending on input/output voltage)
Dimensions: 21mm x 21mm x 6mm
Weight: 4g
Protection Features: Overcurrent, over-temperature, and short-circuit protection.

Pin Configuration and Descriptions

The Matek 12S-PRO BEC has a simple pin layout for easy integration into your circuit. Below is the pin configuration:

Pin Name	Description
VIN+	Positive input voltage terminal (connect to the positive terminal of the battery).
VIN-	Negative input voltage terminal (connect to the negative terminal of the battery).
VOUT+	Positive output voltage terminal (connect to the load or electronics to be powered).
VOUT-	Negative output voltage terminal (connect to the ground of the load or electronics).
ADJ	Voltage adjustment pin (used to set the output voltage when in adjustable mode).

Usage Instructions

How to Use the Matek 12S-PRO BEC in a Circuit

Connect the Input Voltage:
- Connect the VIN+ and VIN- pins to the positive and negative terminals of your battery pack, respectively.
- Ensure the input voltage is within the supported range (9V to 60V).
Set the Output Voltage:
- If using a fixed output voltage (5V, 9V, or 12V), set the voltage selector switch or jumper to the desired setting.
- For adjustable output, use the ADJ pin and a small screwdriver to turn the potentiometer until the desired voltage is achieved. Use a multimeter to verify the output voltage.
Connect the Load:
- Connect the VOUT+ and VOUT- pins to the positive and negative terminals of the device(s) you want to power.
Verify Connections:
- Double-check all connections to ensure proper polarity and secure wiring.
Power On:
- Power on the system and monitor the output voltage to ensure it is stable and within the expected range.

Important Considerations and Best Practices

Heat Dissipation: The Matek 12S-PRO BEC is highly efficient, but it may still generate heat under high loads. Ensure adequate airflow or heat dissipation to prevent overheating.
Current Limits: Do not exceed the maximum continuous current rating of 5A to avoid damaging the BEC.
Voltage Adjustment: When using the adjustable mode, always verify the output voltage with a multimeter before connecting sensitive electronics.
Polarity: Double-check the polarity of all connections to prevent damage to the BEC or connected devices.

Example: Connecting to an Arduino UNO

The Matek 12S-PRO BEC can be used to power an Arduino UNO from a high-voltage battery pack. Below is an example setup:

Set the output voltage of the BEC to 5V.
Connect the VOUT+ pin of the BEC to the 5V pin on the Arduino UNO.
Connect the VOUT- pin of the BEC to the GND pin on the Arduino UNO.
Connect the VIN+ and VIN- pins of the BEC to the battery pack.

Here is a simple Arduino code example to blink an LED while powered by the Matek 12S-PRO BEC:

// Simple LED blink example for Arduino UNO
// Ensure the Matek 12S-PRO BEC is set to 5V output before connecting to the Arduino.

const int ledPin = 13; // Pin connected to the onboard LED

void setup() {
  pinMode(ledPin, OUTPUT); // Set the LED pin as an output
}

void loop() {
  digitalWrite(ledPin, HIGH); // Turn the LED on
  delay(1000);                // Wait for 1 second
  digitalWrite(ledPin, LOW);  // Turn the LED off
  delay(1000);                // Wait for 1 second
}

Troubleshooting and FAQs

Common Issues and Solutions

No Output Voltage:
- Cause: Incorrect input connections or insufficient input voltage.
- Solution: Verify that the VIN+ and VIN- pins are connected correctly and that the input voltage is within the supported range (9V to 60V).
Overheating:
- Cause: High current draw or insufficient cooling.
- Solution: Ensure the load does not exceed the maximum continuous current rating (5A). Improve airflow or add a heatsink if necessary.
Output Voltage Fluctuations:
- Cause: Unstable input voltage or incorrect voltage adjustment.
- Solution: Check the input voltage for stability. If using adjustable mode, recheck the output voltage with a multimeter and adjust as needed.
Short Circuit Protection Triggered:
- Cause: A short circuit on the output side.
- Solution: Disconnect the load and inspect for wiring issues or damaged components. Resolve the short circuit before reconnecting.

FAQs

Q: Can the Matek 12S-PRO BEC power multiple devices simultaneously?
A: Yes, as long as the total current draw does not exceed the maximum continuous current rating of 5A.

Q: How do I know if the BEC is overheating?
A: The BEC includes over-temperature protection, which will shut it down if it overheats. If this occurs, reduce the load or improve cooling.

Q: Can I use the adjustable output mode for sensitive electronics?
A: Yes, but always verify the output voltage with a multimeter before connecting sensitive devices to avoid damage.

Q: Is the Matek 12S-PRO BEC compatible with 12S LiPo batteries?
A: Yes, it supports input voltages up to 60V, making it compatible with 12S LiPo battery packs.

This concludes the documentation for the Matek 12S-PRO BEC.