vault backup: 2025-02-03 07:04:13

OneNote/OSD/CarrierBoard/Todos for V0.2.md

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-**GENERAL TODOS**
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-  
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-- [ ] Proper Power connector to connect with PDB
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-- [ ] Our own gps module
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-- [ ] Working heat-sink solution: --> place corals further apart from each other.
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-- [ ] Make the board smaller! --> Weight saving, less expensive
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-- [ ] Use both sides for components.
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-- [ ] Put more LED's:
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-- [ ] Make more pinouts if V0.2 is still a debug board.
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-**Ideas:**
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-Do we want to integrate more sensors onto the board? Temperature, pressure, gyro? #question
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-How do we measure the position of the flaps/payload bay? #question
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-Do we need more storage? Implement flash storage or sd-card? #question
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-Buy sara board from [sparkfun](https://www.sparkfun.com/products/14997)?
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-**To Decide before start:**
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-- [ ] USB-C yes or no?
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-- [ ] MIPI yes or no?
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-- [x] Open drain pins: use own transistor or device tree approach? --> Open drain also for PWR_ON
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-- [ ] DEBUG board: yes or no?
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-- [ ] Stress test antenna sara.
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-**Precise TODO's:**
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-- [ ] Remap SARA Rx/Tx
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-- [ ] Decide scope of board: still debugging?
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-- [ ] Rewire orange coral status led: with datasheet decide current limiting resistor to have full power at steady on. --> allows to regulate dimness with pwm.
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-- [ ] Use large size resistor for important settings: e.g. voltage regulators
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-- [ ] Make single pin of gnd to attach oscilloscope crocodile clamp
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-- [ ] Find Power connector to connect to PDB.
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-- [ ] Remove 0-Ohm resistors where they are not needed anymore, but provide testpoints!
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-- [ ] Don't use Testpoints: Use holes like jtag: you can later on add pins if needed.
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-- [ ] Add LED to id-pin of cc-control of usb-c (it is a open drain pin) --> when pulled to gnd it should activate a transistor that connects the led to gnd.
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-- [ ] Gpio link to do hard reset between corals.
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-- [ ] Flight controller connectors:
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-- [ ] 2x UART
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-- [ ] 2x GND Power
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-- [ ] 2x 5V Power
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-- [ ] ?x GNSS connection
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-- [ ] ?x GND between lines for shielding
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-- [ ] General Connectors
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-- [ ] 1x GND, 5V for RC (asym-conn)
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-- [ ] 2x GND, 5V for fans (asym-conn)
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-- [ ] 5x GND, 5V DNP conn for eventualities
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-- [ ] same with 3.3v and 1.8V