Page Comparison

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1. Microsd card slot

   1. card must be SPI interface, around confluence requirements there may be more details

   2. something from this list prolly https://www.molex.com/molex/search/deepSearch?pQuery=category%253A%2522Memory%2BCard%2BSockets%2522%2540productname%253A%2522microSD%2BCard%2522

   3. dont do the one on ZP2 cuz the pins are the wrong way around. make sure whatever is chosen here has pins the right away around and is easy to work with!

   4. https://www.digikey.ca/en/products/detail/molex/5027740891/1952535 ?

   5. This task is marked as complete by Daniel but marked incomplete by Aidan

2. current & voltage sense

3. do we even wanna do this?

4. voltage sense is easy, we want to do this, current sense is more complicated, do we wanna do this

5. current sense: https://www.digikey.ca/en/products/filter/linear-amplifiers-instrumentation-op-amps-buffer-amps/687?s=N4IgTCBcDaIJIDkCCBGAHABhAXQDQgDYpQBLAEyhAFoUMJ8AHAF0pHyYE8GBTSsgZwDGIAL4igA

6. Voltage Sense from VBAT to ADC:

   • Voltage divider with R1 = 280k, R2 = 16.2k. 60V->3.28V, 24V->1.32V

   • 280k (Yageo 0603): https://www.digikey.ca/en/products/detail/yageo/RC0603FR-07280KL/727112

   • 16.2k (Yageo 0603): https://www.digikey.ca/en/products/detail/yageo/RC0603FR-0716K2L/726967

   • 3.3V zener diode: https://www.digikey.ca/en/products/detail/onsemi/MM3Z3V3B/1626765

   Let me know if this looks alright for voltage sense

7. IO Connector Sourcing

8. List of things we need to pinout from MCU, from confluence:
   7 GPIO for onboard LEDs
   4 GPIO for offboard LED driver (most likely neopixel)
   1 GPIO for ARM/DIsarm function
   1 PWM for Buzzer on arm/disarm board
   8 PWM DMA for motors
   4 PWM normal for servos
   1 PPM for RC receiver
   1 SWD/SWO connector pins for programming
   2 I2C for general purpose
   3 SPI for SD Card, IMU, & other (place pullup footprints on everything except SD card)
   6 UART

9. @Kevin Li going to look into this task as well: https://www.molex.com/molex/products/family/slimstack_fine_pitch_smt_board_to_board_connectors?parentKey=micro_connectors

10. Looking for 30 or 40 pin connector for board to board connection with very low mated height, something like the below, but we have to actually be able to purchase it.

11. this is the hardest schematic task we have left.

12. ZP3 Schemetic

13. Finish FootPrints

14. Primary Layout

15. Primary Routing

16. Order ZP3 Primary PCB

17. Dev Interface Board

18. Fuses Sourcing

19. Flight Interface Board

20. Arm/Disarm Connection Circuitry

21. Arm/Disarm Board