Changes for page MES - Power Distribution Board (PDB)

Last modified by Eric Nantel on 2021/09/24 09:36

From version < 281.1 >

edited by Brahim Daouas
on 2018/06/20 10:19

To version < 282.1 >

edited by Coleman Benson
on 2018/06/20 11:37

< >

Change comment: There is no comment for this version

Summary

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Content

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  = Description =
--The Multirotor Erector Set (MES) Power Distribution Board (PDB) is a highly versatile multi copter power distribution system. **Before using this board, be sure to read the safety section first**.
++**~*~*~* READ THIS MANUAL, ESPECIALLY THE SAFETY SECTION BELOW BEFORE MAKING ANY CONNECTIONS~*~****
--With its two PCB design (separate positive and negative power planes) and its 4oz copper thickness per PCB, the PDB has 2 battery inputs and can easily power up to 8 UAV with a continuous current capacity of 20A per motor (160A total) and a peak current capacity of 35A per motor (280A total). This PDB has also an on-board internally driven loud buzzer and the Quadrino Nano pins broken out making it the ideal PDB to be used with the Quadrino Nano Flight Controller.
++The Multirotor Erector Set (MES) Power Distribution Board (PDB) is a highly versatile system; its two PCB design (separate positive and negative power planes), 4oz copper thickness and two battery inputs, allows it to easily power up to 8 UAV motors with a continuous current capacity of 20 amps each (160A total) and a peak / instantanous current capacity of 35A per motor (280A total). This PDB has also an onboard, internally driven buzzer and a pinout directly compatible with the Quadrino Nano Flight Controller.
  = Features =
--* Designed for use with the Lynxmotion Quadrino Nano Flight Controller, but can be used in any multirotor system
++* Pinout compatible with the Lynxmotion Quadrino Nano Flight Controller, but can be used in any multirotor system
  * Connect up to 8x motors using 3.5mm bullet connectors
--* Positive and negative PCBs allow for higher current performances
--* Support single or dual batteries setup
--* Include 1x XT60 to 3.5mm bullet connector battery cable adapter
++* Positive and negative PCBs allow for high current
++* Supports single or dual batteries setup
++* Includes 1x XT60 to 3.5mm bullet connector battery cable adapter (additional cables sold separately).
  * On-board internally driven buzzer
--* Jumpers for BEC management, battery monitoring and external device power voltage selection
--* Vin, Gnd and 5V pins broken out for the possibility of soldering an external 5V regulator
++* Jumpers for battery elimination circuit (BEC) power management, battery monitoring and external device power selection
++* Vin, GND and 5V pins broken out for the possibility of soldering an external 5V regulator
  = Specifications =
  * Continuous current of 20A per motor (160A total for 8 motors)
--* Peak current of 35A (280A total for 8 motors)
--* Separate power PCBs : bottom PCB is connected to battery positive lead and top PCB is connected to battery negative lead
++* Peak current of 35A (280A total for 8 motors) for several seconds
++* Separate power PCBs : bottom PCB is connected to battery positive and top PCB is connected to battery negative
  * 4oz copper thickness on both top and bottom PCBs
  * 8 x 3.5mm male bullet connectors for ESCs positive leads + 2 x 3.5mm male bullet connectors for batteries positive leads
  * 8 x 3.5mm female bullet connectors for ESCs negative leads + 2 x 3.5mm female bullet connectors for batteries negative leads
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  = Wiring =
--The wiring diagrams below show where to connect the XT60 battery wires, the ESCs power leads and RC wires for different copter types.
++The wiring diagrams below show where to connect the XT60 battery wires, the ESCs power leads and RC wires for different copter types. Be sure to read the safety section below before making any connections.
--Ensure that the batteries are connected last and verify all wires polarity by checking if the RED POSITIVE XT60 battery wires and ESCs power leads are connected on the BOTTOM pcb and BLACK NEGATIVE are connected on the TOP pcb :
++1. DO NOT connect the batteries until everything has been wired and checked.
++1. Verify the polarity of the battery connector(s) and sure the positive (red) lead connects to the top PCB, and the negative / GND (black) lead connects to the bottom PCB.
++1. Should your ESC not use the correct bullet connectors for power, the existing connectors can be removed and replaced by 3.5mm connectors. Ensure the type of connector is used before soldering (see image below).
++1. Connect the ESCs to the PDB based on the configurations below, ensuring the positive is connected to the top place and negative connected to the bottom plate.
++11. For a single battery configuration, the ESCs should be installed close to the battery
++11. For a dual battery configuration, the ESCs should be installed equally on the board to try to lessen uneven current draw between the batteries
++1. Connect the three-pin cables based on your copter configuration below.
++1. When using two batteries, they should both be fully charged and provide the same output voltage. We suggest using two identical batteries from the same manufacturer.
++1. Ensure the battery or batteries selected can provide enough (discharge) current for all motors under load. Normally the discharge rating is provided as a C-rating.
++1. DO NOT remove any bullet connectors from the PDB when a battery is connected - disconnect the batteries first.
++//{CAD image of positive connector and negative connector}//
++
  (% style="text-align:center" %)
--|//**Single ESC**//|//**Quadcopter**//|//**Hexacopter**//|//**Octocopter**//
++|//**1x ESC**//|//**4x ESCs**//|//**6x ESCs**//|//**8x ESCs**//
  |(((
  (% style="text-align:center" %)
  [[image:MES-PDB-Wiring-Board-One.png||alt="MES-PDB-Wiring-Board-Single.png"]]
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  )))
--The following table shows the connection points for each ESC power leads corresponding to their RC 3 pins wires based on the copter type :
++The following table shows the suggested connection points for each of the ESCs' power leads(positive and negative), their corresponding RC 3 pin connector and input signal pin based on the copter type :
  (% style="text-align:center" %)
  |(% style="width:400px" %) |(% style="width:50px" %) |[[image:QUADX.png||alt="HEX.jpg"]]|[[image:Y4.png||alt="HEX.jpg"]]|[[image:Y6.png||alt="HEX.jpg"]]|[[image:HEX.png||alt="HEX.jpg"]]|[[image:X8.png||alt="HEX.jpg"]]|[[image:OCTO.png||alt="HEX.jpg"]]
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  )))|(% colspan="6" rowspan="1" %)(((
  ===== JA jumper =====
--The JA jumper is intended to connect the battery positive lead to the A0 pin to monitor the battery voltage on an analog input pin :
--
--JA jumper inserted : battery positive is connected to A0 pin
--JA jumper not inserted : battery positive is not connected to A0 pin
++When installed, this jumper is intended to connect the battery's positive lead to the A0 pin to monitor the battery voltage on an analog input pin :
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  )))|(% colspan="6" rowspan="1" %)(((
  ===== JB jumper =====
--The JB jumper is intended to choose if the 5V power line on the PDB is connected to the BEC of ESC#2 or not :
++This jumper selects between the 5V input on the PDB (using an external, optional 5V regulator) or the BEC of ESC #2. With the jumper in place, the 5V line of the PDB is connected to the 5V BEC pin of ESC #2 (assuming the ESC includes a BEC) which will power all the 5V pins on the PDB.
--JB jumper inserted : 5V line of the PDB is connected to the 5V BEC pin of the ESC#2 (if present). Therefore, the BEC of the ESC#2 will power all the 5V pins on the PDB.
--JB jumper not inserted : 5V from the BEC of ESC#2 is not connected to the 5V line of the PDB.
--
  //**Note : Ensure to remove the JB jumper if a 5V external regulator is soldered on the PDB.**//
  )))
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  )))|(% colspan="6" rowspan="1" %)(((
  ===== Vout jumper =====
--The Vout jumper is intended to choose the voltage between 5V (from the external 5V regulator or from the BEC of ESC#2 depending on the position of JB jumper) or battery voltage on the Vout pin. The Vout pin is used along with D32 pin (active low) to power external devices (LEDs, Buzzer, etc.) :
++This jumper is intended to select between 5V provided by JB (from the optional, external 5V regulator or from the BEC of ESC #2, depending on the position of JB jumper) or use the main battery voltage (Vbat) on the Vout pin. The Vout pin is used along with D32 pin (active low) to power external devices (LEDs, Buzzer, etc.) :
  Jumper between Vout and 5V : external device connected to Vout and D32 will be 5V powered when D32 is low
  Jumper between Vout and BAT : external device connected to Vout and D32 will be powered through the battery voltage
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  == 5V External Regulator ==
--The MES PDB has 3 pins broken-out : IN (Red), G (Black) and 5V (Green) to solder an external 5V regulator (**not included**). Make sure to remove the JB jumper if an external 5V regulator is soldered to the PDB
++The MES PDB has 3 pins broken-out : BAT / Vin (Red), GND (Black) and 5V (Green) as indicated in the image below. The pinout is used to solder an optional, external 5V regulator (**not included**). Be sure to remove the JB jumper if an external 5V regulator is soldered to the PDB. Additional information regarding the optional Lynxmotion 5V and 12V regulators are provided here {//coming soon//}.
  |(% rowspan="3" style="width:400px" %)(((
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  == Quadrino Nano ==
--Although the MES PDB is intended to be used with any flight controller copter system, this power distribution board is designed to be directly interfaced with the Lynxmotion Quadrino Nano Flight Controller.
++Although the MES PDB is intended to be used with any flight controller copter system, it was designed to be directly interfaced with the Lynxmotion Quadrino Nano Flight Controller.
  |(% style="width:400px" %)(((
  (% style="text-align:center" %)
  [[image:MES-PDB-Quadrino-Wiring.png||height="350" width="350"]]
  )))|(((
--Using the appropriate wiring harness (QN-PDB-WH), the MES PDB can be connected to the Quadrino Nano on its middle 12 positions 2.54mm pitch connector as shown in this picture.
++Using the appropriate wiring harness (QN-PDB-WH), the MES PDB can be connected to the Quadrino Nano via its middle 12 position, 2.54mm pitch connector as shown in this image.
--All the RC signal pins from the ESCs connected on the PDB will be connected to the appropriate ESC inputs on the Quadrino Nano.
++All RC signal pins from the ESCs connected to the PDB will be connected to the appropriate ESC inputs on the Quadrino Nano (refer to the wiring diagram above).
--The 5V pin (either from the external 5V regulator or ESC#2 BEC) on the PDB will power the Quadrino Nano.
++The 5V pin (either from the optional, external 5V regulator or the BEC from ESC #2) on the PDB will power the Quadrino Nano.
--A0 pin on the PDB is for the battery voltage monitoring feature on the Quadrino Nano (if JA jumper is inserted).
++The A0 pin on the PDB takes advantage of the battery voltage monitoring feature on the Quadrino Nano (provided JA jumper is inserted).
--D32 pin on the PDB will be driven by the Quadrino Nano (active low) to activate the on-board buzzer and any 5V/Battery Voltage (depending on the position of Vout jumper) external device connected to the PDB.
++The D32 pin on the PDB will be driven by the Quadrino Nano (active low) to activate the on-board buzzer and any 5V/Battery Voltage (depending on the position of Vout jumper) external device connected to the PDB.
  )))
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  = Thermal Analysis =
--Following is a table that sums up the thermal analysis of the PDB when used with a single or dual battery drawing 160A or 280A continuous current :
++Given the almost infinite number of potential situations regarding current draw, it is difficult to analyze all configurations. With this in mind, the following table summarizes the thermal analysis of the PDB when used with a single or dual battery drawing 160A or 280A continuous current.
  (% style="text-align:center; width:1000px" %)
  | |(% colspan="2" rowspan="1" %)**//160A Continunous (20A / ESC)//**|(% colspan="2" rowspan="1" %)**//280A Continuous (35A / ESC)//**|(% rowspan="1" %)
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  (% style="text-align:center" %)
  [[image:MES-PDB-Thermal-Scale-02.png||alt="MES-PDB-Thermal-Scale.png" height="355" width="141"]]
  )))
--|(% style="height:150px" %)//**Dual Batteries Input**//|[[image:Lynxmotion UAV.MES - Multirotor Erector Set.MES - Power Distribution Board (PDB)[email protected]||width="200"]]|[[image:Lynxmotion UAV.MES - Multirotor Erector Set.MES - Power Distribution Board (PDB)[email protected]||width="200"]]|[[image:Lynxmotion UAV.MES - Multirotor Erector Set.MES - Power Distribution Board (PDB)[email protected]||width="200"]]|[[image:Lynxmotion UAV.MES - Multirotor Erector Set.MES - Power Distribution Board (PDB)[email protected]||width="200"]]
--|(% style="height:15px" %) |//**TOP**//|//**BOTTOM**//|//**TOP**//|//**BOTTOM**//|(% colspan="1" %)
++|(% style="height:150px" %)//**Dual Battery Input**//|[[image:Lynxmotion UAV.MES - Multirotor Erector Set.MES - Power Distribution Board (PDB)[email protected]||width="200"]]|[[image:Lynxmotion UAV.MES - Multirotor Erector Set.MES - Power Distribution Board (PDB)[email protected]||width="200"]]|[[image:Lynxmotion UAV.MES - Multirotor Erector Set.MES - Power Distribution Board (PDB)[email protected]||width="200"]]|[[image:Lynxmotion UAV.MES - Multirotor Erector Set.MES - Power Distribution Board (PDB)[email protected]||width="200"]]
++|(% style="height:15px" %) |//**TOP PCB**//|//**BOTTOM PCB**//|//**TOP PCB**//|//**BOTTOM PCB**//|(% colspan="1" %)
  = Dimensions =
++The suggested mounting method for the PDB is using either standoffs or double-sided tape. Ensure there are no loose wires or connections which can contact the PDB and potentially cause a short circuit.
++
  [[image:MES-PDB-Dimensions.png||width="400"]]
  == Safety ==
++Be sure to read through this guide and check all connections.
++
  {{warningBox warningText="Warning: Ensure the positive and negative battery leads do not contact each other<br/><br/>Warning: Double check the polarity of the XT60 battery wires and ESCs power leads<br/><br/>Warning: Ensure to connect the battery LAST<br/><br/>Warning: Pay attention to not short positive and negative bullet connectors accidently when the PDB is powered<br/><br/>Warning: Ensure the current draw from all motors does not exceed the maximum discharge current of the battery nor the PDB current rating<br/><br/>Warning: Ensure that JA jumper is not inserted if a 5V external regulator is soldered on the PDB<br/><br/>Warning: Verify the Vout jumper position before powering an external device through D32 and Vout"/}}

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