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Arm Disarm Board
Validate Pixhawk COTS solution
Hand board off to newer member
6S BMS
This will become a WARG Project
Kevin will be running this
Kevin wants to push to take more care of our batteries and give every battery a BMS
Wants to keep project very generic
Create Asana, Confluence (this is already started), Timeline
We need to clearly identify the requirements ← made into an Asana Task
Confluence: 6S Battery Management System
Kevin will be doing this project himself so it is “streamlined”
Wants to do it himself to avoid slowing down the process
Doesn’t wanna be to “micro-managy”
Possibly Kevin taking on just one person to kind of teach so that the project is not so isolated
allows for more opportunity for knowledge transfer ?
Instead just have people snoop his design to learn
In the real world people design boards themselves so we should copy that mentality in WARG
Someone else could possibly do validation / bringup / rev 2 stuff, but Kevin will handle the initial design phase of the board
We don’t want the knowledge to be isolated to Kevin, but we also need people to work their way up the chain and slowly gain knowledge in segments - you can’t jump into the deep end
50V-24V @2A Buck Converter Board - (Unasigned)
Project was schemed up a while ago but never assigned.
(12S) 50V-24V Synchronous Buck Converter PCB @2A Max Load Current Consumption (48W)
I/O:
Input Voltage Connector
(12S) +36V to +50.4V
GND
Output Voltage Connector (3x)
+24V
GND
Current Sense Connector
V_sense+ and V_sense-, or:
I_sense and GND
Features:
50V-24V Buck Converter @ 2A
Status LEDs for both +50V and +24V voltage rails
Optional current sense interface
Should also be able to provide 12V @ 2A if needed with the change of a few passives
Dimensions:
25mm x 35mm
No vertical design constraints
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Step Down Converter Modules:
Current
5V_USB to 24V, 18V & 12V low current
12V to 5V Buck 3A
24V to 12V & 5V Buck 2A
Proposed
12S to 24V Buck 1A
12S to 12V Buck 2A
12S to 5V Buck 3A
Servo (4x) module 6S to 6V at 500mA per output, data passthrough
Servo (4x) module 12S to 6V at 500mA per output, data passthrough
LED Driver Board
High Current Power Monitoring Module
Single Current transformer for current sensing + ADC
Voltage ADC
Passes that data over I2C to flight controller for processing
Low Current Power Monitoring Module
resistive current sensing version of the high current power module
ZP3.0 Primary Minor Fixes
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Mock COTS PDBs
(12S-5V & 12S-12V) with on-board MCU for diagnostics (voltage & current sense)
(6S-5V & 6S-12V) with on-board MCU for diagnostics (voltage & current sense)
Mock COTS PDBs
Castellated boards for steps-downs sized
Allowing for more modularity
In-rush current limiting (aka Pre-Charge) Project
As we go to 12S and we’re adding more capacitance
(this feature is also implemented in Kevin’s 6S BMS)
Possibly a 12S and 6S version
ZP3 Interface
Locking connectors instead of headers
Hard Difficulty
Current
COTS 6S Single Channel Motor Controller
6S Battery Management System
Proposed
COTS 12S Single Channel Motor Controller
DSHOT support - Solder pad input & output
Research into custom Li-Ion Battery Pack
We need members that are interested in doing this in order to pursue it
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