Versions Compared

Version Old Version 1 New Version Current
Changes made by

Richard Sommers (RIT Student)

Richard Sommers (RIT Student)

Saved on

Key

  • This line was added.
  • This line was removed.
  • Formatting was changed.

...

Look into LZ4 compression for getting base64 data off

In comparison to Grim

IMU Boost detection: probably same, maybe single axis?

Altimeter Boost detection: probably same? didn’t trigger on grim flight bc IMU go there first

Data Saving: Larger Preflight buffer, didn’t get all we wanted from Grim

Hardware

Component

Driver

Sim Driver

Notes

Pump1, Pump 2

GPIO

GPIO_EMUL

sim won't do anything

Cameras

GPIO

GPIO_EMUL

sim won't do anything

LEDS

GPIO

GPIO_EMUL

sim won't do anything

Servos

PWM

Unsure

untested

BME390

Zephyr Driver

OR

Barom

Barometer

✅tested (sensor mod)

LSM6DSL

Zephyr Driver

OR IMU

✅tested (grim)

MAX-M10M-00B

Ublox module

OR GNSS

untested (other ublox devices work)

RFM98w

richie

loramac driver

⛔

in testing

INA260 (3.3, 5)

richie driver

⛔(driver by rafael)

rafael sim driver

✅tested (grim)

Main Uart (USB)

Zephyr Driver

Uart tty

✅tested (grim)

Debug Uart (

USB

header)

Zephyr Driver

Uart tty 2

✅tested (grim)

Software Inputs

  • IMU (LSM6DSL)

  • Barometer (BME380?)

  • GNSS (u-blox)

  • Radio Temperature/State

  • INA260

Data Output

Thing

'Driver'

Notes

Preflight Buffer

CDatalogger

❓ (rolling datalogger sucks on LFS (might have enough ram to do what grim did but only flush after flight))

Flight Data

CDatalogger

✅

Flight Log

CFlightLog

✅⚠

Radio Transmission (4FSK)

richie driver

⚠

Horus Encode

nate encoder

⚠

Camera

GPIO

✅

Preflight Data Saving

Circular buffered (but for how long (last year was 1 second which was kinda too small))

File

Things

Packet Size (Bytes)

Rate (hz)

preflight_imu

IMU (gyro and acc)

24+4

1000

preflight_barom

bme380

8+4

100

preflight_gps

GPS

36+4

1

Flight Data Saving

File

Things

Packet Size (Bytes)

Rate (hz)

flight_imu

IMU (gyro and acc)

24+4

1000

flight_barom

bme380

8+4

100

flight_gps

GPS

36+4

1

Post Flight Data Saving

Sync often bc we're gonna turn it off at some point

File

Things

Packet Size

Rate

postflight_imu

IMU (acc)

12+4

4hz

can shutup after a while if we're stable. if its windy might want to think about that

postflight_gps

GPS

36+4

0.1hz

can shutup after a while cuz it wont be moving or be very slow.

Radio Output

Byte No.

Data Type

Size (bytes)

Description

0

uint16

2

Payload ID (0-65535)

2

uint16

2

Sequence Number

4

uint8

1

Time-of-day (Hours)

5

uint8

1

Time-of-day (Minutes)

6

uint8

1

Time-of-day (Seconds)

7

float

4

Latitude

11

float

4

Longitude

15

uint16

2

Altitude (m)

17

uint8

1

Speed (kph)

18

uint8

1

Satellites

19

int8

1

Temperature (deg C)

20

uint8

1

Battery Voltage

21

???

9

Custom data

30

uint16

2

CRC16-CCITT Checksum

source

Testing

Is the FCC gonna kill us test

...

does it fall out
(parachute would probably catch)

Wrapped in Parachute lines

can it still right itself

can it still pump

Measure initial pump time

...