#15008 PM07 Power Management Board Quick-Start-Guide P a g e | 1 www.holybro.
The Power Management Board (PM Board) serves the purpose of a Power Module as well as a Power Distribution Board. In addition to providing regulated power to Pixhawk 4 and the ESCs, it sends information to the autopilot about battery’s voltage and current supplied to the flight controller and the motors. To power Pixhawk 4, connect one of the PWR ports of PMB to one of the POWER bricks of Pixhawk 4. The PMB’s input 2~12S will be connected to your LiPo battery.
PIN & Connector Function I/O PWM-IN See table below for connection to Pixhawk 4 M1 I/O PWM OUT 1: connect signal wire to ESC of motor 1 here M2 I/O PWM OUT 2: connect signal wire to ESC of motor 2 here M3 I/O PWM OUT 3: connect signal wire to ESC of motor 3 here M4 I/O PWM OUT 4: connect signal wire to ESC of motor 4 here M5 I/O PWM OUT 5: connect signal wire to ESC of motor 5 here M6 I/O PWM OUT 6: connect signal wire to ESC of motor 6 here M7 I/O PWM OUT 7: connect signal wire to ESC of m
The following table summarizes how to connect Pixhawk 4's PWM OUT ports to PMB’s PWM-IN ports, depending on the PX4 Airframe Reference. You can find this reference online in PX4 User guide. Connection between Pixhawk 4 --> PMB PX4 Airframe Reference MAIN: motor I/O PWM OUT --> I/O PWM IN MAIN: servo I/O PWM OUT --> FMU PWM IN AUX: motor FMU PWM OUT --> I/O PWM IN AUX: servo FMU PWM OUT --> FMU PWM IN The pinout of Pixhawk 4’s power ports is shown below.
Make the PM07 show the quantity of electric charge of your battery Mission Planner setup: 1. 2. 3. 4. 5. Connect PM07 to the battery, also connect it to Mission Planner via USB. Click “INITIAL SETUP” and come to the menu “Battery Monitor”. Make “Monito” into “Analog Voltage and Current”. Make “Sensor” into “9: Holybro Pixhawk4 PM”. Make “HW Ver: "The Cube or Pixhawk" （pixhawk4,pixhawk4mini,pix32v5,pix32）” “HW Ver: Durandal（Durandal）” 6. Input “18.182” into Voltage divider (Calced). 7. Input “36.
The XT60 plug and 12AWG wire that PM06 comes with is rated for 30A continuous current and 60A instantaneous current (<1 minute). If a higher current is being used, the plug type and wire size should be changed accordingly.
