Asana

Flight Controller:

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

   1. do we even wanna do this?

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

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

   4. 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

3. IO Connector Sourcing

   1. 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

   2. @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

   3. 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.

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

4. ZP3 Schemetic

5. Finish FootPrints

   1. 1210 General CAP

   2. 1210 General RES

   3. General 0603 LED (.LED_0603)

   4. (Red, Green, Yellow) LED (APTF1616SURKCGKSYKC)

   5. TVS Diode (PESD3V3X4UHCYL)

6. Primary Layout

7. Primary Routing

8. Order ZP3 Primary PCB

9. Dev Interface Board

10. Fuses Sourcing

    1. Maybe we leave this out, this seems expensive and a lot of work for what it's worth.

    2. derek wright meeting will give more context

    3. moving to flight interface board

    4. they absolutely make smaller efuses for this application IIRC

11. Flight Interface Board

    1. most of this task is sourcing the connector type we want to use here, this task may be handed off to sysint?

12. Arm/Disarm Connection Circuitry

    1. speaker driver, led driver, button input receiving

    2. https://uwarg-docs.atlassian.net/wiki/spaces/EL/pages/2071887926/ZP3+Arm+Disarm+Component+Decision+Matrix

    3. this will go on the flight interface board.

13. Arm/Disarm Board

    1. Michael Botros will be assigned this if he's interested and has finished bootcamp