Arrow Project Quiver Power PCB V1
This thread will keep track of the first iteration of a custom power PCB for Project Quiver PT2. I will start with gathering the system requirements. For this I will look at Quiver PT1 and keep a record of the most important features and conditions.
Input taken from memory, the Quiver V1 Harnessing Grant and the CAD assembly
https://arrowdao.notion.site/Project-Quiver-V1-Harnessing-Grant-134dfaee0db4808a8ad1d0583b67fba4
System Requirements
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General size: 200x120mm (to fit in a similar space as the PT1 PCB)
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Layout:
- One side of the PCB lies on the edge and carries the connectors
- The motor connectors are orientated inwards to the center or to the sides
- The main power terminals also lie on the edge that faces inwards
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Power Distribution:
- High power distribution from Battery to Motors
- Includes Fuse solid state relais and precharge
- Power distribution to:
- Payload (Brush Bullet Dispenser, power requirements unknown(10W, 12V), GPIO pin from FC will activate 12V supply)
- Radar Altimeter (2W; 5V or 12V)
- Flight controller pixhawk 6X (2.5W; 5V)
- Flight controller peripherals 6X (maximum possilbe 7.5W, 5V)
- SIYI HM30 transmitter (5W, 12V)
- SIYI A8 camera and gimbal (5W, 12V)
= ~22W on the 12V bus and ~10W on the 5V bus
- High power distribution from Battery to Motors
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Signals:
- The PCB will also offer CAN Bus connections to devices:
- Motors/ESCs
- Battery
- Brush bullet dispenser
- Radar altimeter
- Flight controller
- The PCB will not include connections for devices that are directly connected to the FC
- The PCB will also offer CAN Bus connections to devices:
Hardware on the PCB
- XT60PW connector for each motor
- 5 Pos. signal connector for each Motor/ESC
- MATEKSYS FCHUB 12S V2 for power conversion 12V and 5V and current measurement
- Screw terminals for the battery connection
- Precharge resistors
- Fuses for 12V and 5V
- One large sealed connector for most connections
Proposed Layout
- Fuse and solid state relais will be outside of the PCB casing.