15
Image Credit: Twitter @Cmdr_Hadfield OzQube-1 – The Homegrown PocketQube Image Credit: Twitter @Cmdr_Hadfield Presented by Stuart McAndrew CUBESAT2017: Launching Cubesats for and from Australia

OzQube-1 The Homegrown PocketQube · OzQube-1 –The Homegrown PocketQube ... •Camera module based on STM32F103 Microcontroller ... • Development Tools –Expand EduQube to be

  • Upload
    lyminh

  • View
    219

  • Download
    0

Embed Size (px)

Citation preview

Image Credit: Twitter @Cmdr_Hadfield

OzQube-1 – The HomegrownPocketQube

Image Credit: Twitter @Cmdr_Hadfield

Presented by Stuart McAndrew

CUBESAT2017: Launching Cubesats for and from Australia

A 1P PocketQube designed and built in (Western) Australia.

Main Mission Objectives:• To successfully operate in space (This helps with the rest of the

objectives!)

• Capture colour images of Australia from space• Transmit the images to people around the world

OzQube-1

• 1 unit PocketQube = 1P = 5x5x5cm• PQ Concept created by Co-creator of Cubesat – Bob

Twiggs• Smaller, Lighter, Simpler = Cheaper launch, quicker

development• OzQube-1 started early 2014 – not long after the first

batch of PocketQubes were launched

PocketQube?

• Part of worldwide community that helped develop PQ60 electrical standard for PQs

• The first PQ’s were a big inspiration for starting a space project of my own – especially $50Sat

• As a solo project, I could manage a build cost of $50!• ……It turns out that satellites definitely do cost more

than $50!!

Background

• Presented at AU Workshop in 2015

What’s New?

Solar Panels.Concept

Issues:TASC not available

Test

Issues:Not space qualifiedLow efficiency – not multi-junction

Prototype

Issues:Mounting holes not optimal

Improvement

New cells are trimmedBetter Fill-factor – more cells fit in the same sized panelOptimised layout and mounting locations

CHASSIS/STRUCTUREHardware shop test Prototyping with 3D print Aluminium Development version

Command & Data Handling

• Space Arduino! – Atmel ATmega328P Microcontroller• Features:

• RTC• Power management (for SEU removal)• Watchdog• Storage (Micro-SD + FRAM)• 9 Axis IMU (logging only – no ADCS)

• May need micro with more RAM! (Possibly ATMega1284P)

Early development version of CDH

Comms

• 1W output Radio Module, based on Silabs SI4463. (RF4463F30 from NiceRF.)• Aiming for 19,200bps data rate, with 9600bps default mode (to be verified)• Was going to have RTTY for downlink of images, but might not have enough RAM• Using custom packet format – to be published just before launch• Similar to $50Sat, there will be some open uplink options for HAM operators

Electrical & Power System

• Full custom design. Not much has changed from original design. • Same hole in middle for camera lens to pass through!• 4 channel MPPT (1 per panel, with 1 shared between top and bottom)• Battery voltage, current and power monitoring• Solar Bus voltage, current and power monitoring• Battery voltage Bus and 3.3V Bus• 1 x switched 3.3V circuit for payload• Current limiting switches for all power circuits

Camera

• 2 Megapixel OV2643 sensor• Camera module based on STM32F103 Microcontroller• High quality 25mm lens• Upgraded plastic lens mount to stronger aluminium item• Auto everything – not many control options = simple interface• Estimated GSD of 54m/pixel @ 600km

New Developments

• Co-founded startup company as spinoff from satellite development

“Picosat Systems”

Main goals:• Smallsat Applications – Utilise and evolve the “OzQube” platform for commercial and scientific purposes• Development Tools – Expand EduQube to be a development platform for entry level space missions• Education - Develop satellite inspired STEM kits for primary and secondary students – “EduQube”

Met Co-founder – Conrad Pires – at ESA social media event here in WA in 2016.

Stall at local Astrofest event recently attracted lots of interest from local Universitiesas well as the general public.

New Developments

EduQube• Inspired by OzQube-1 • It’s a PocketQube satellite for the classroom• An embedded-electronics satellite engineering platform• It’s Arduino based and easy to use• Contains high-quality sensors • Is highly expandable – Add wireless comms or new sensorsIt’s aimed at• High Schools• Universities• Research organisations• Not-for-profit organisations

Final Thoughts

Crowdfunding Launch – Please donate!https://gofundme.com/ozqube1

Find out more Follow the OzQube-1 project on Twitter , Facebook and STEMN

Blog – http://ozqu.beStartup – http://picosat.systems

[email protected]

Questions?