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<strong>MediaWiki has been installed.</strong>
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[[File:Cansat-2.jpg|200px|thumb|right|CanSat]]
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This wiki presents a possible setup for the [https://www.hes-so.ch/swisscansat Swiss CanSat] competition.
  
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Consult the [https://www.mediawiki.org/wiki/Special:MyLanguage/Help:Contents User's Guide] for information on using the wiki software.
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= Development =
  
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== Getting started ==
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The work consists to build a [https://en.wikipedia.org/wiki/CanSat system in the shape of a soda can]
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* [https://www.mediawiki.org/wiki/Special:MyLanguage/Manual:Configuration_settings Configuration settings list]
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which will be launched at about 1&nbsp;km altitude.
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* [https://www.mediawiki.org/wiki/Special:MyLanguage/Manual:FAQ MediaWiki FAQ]
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As a primary mission, the CanSat will log temperature and pressure during the whole flight.
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* [https://lists.wikimedia.org/mailman/listinfo/mediawiki-announce MediaWiki release mailing list]
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Additionally, a secondary mission is defined by each competition group.
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* [https://www.mediawiki.org/wiki/Special:MyLanguage/Localisation#Translation_resources Localise MediaWiki for your language]
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* [https://www.mediawiki.org/wiki/Special:MyLanguage/Manual:Combating_spam Learn how to combat spam on your wiki]
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Additionally to the system engineering, the work comprises the [[development]] of:
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* the control and data acquisition [[electronics]]
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* the [[power supply]]
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* the [[enclosure]]
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* the [[parachute]]
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== Electronics ==
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[[File:Swiss kit.jpg|200px|thumb|right|CanSat kit]]
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The CanSat [[electronics]] bases on a [[kit]] comprising:
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* a [[Raspberry Pi pico]] control board
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* a [https://www.adafruit.com/product/4716 temperature, humidity and pressure sensor]
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* a Printed Circuit Board (PCB) development set:
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** [https://www.adafruit.com/product/239 breadboarding PCB]
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** [https://www.adafruit.com/product/723 prototyping PCB]
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** 4 x 20 pin header rows
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** breadboarding cables
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** on/off slide switch
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** [https://www.adafruit.com/product/4203 LEDs] and 330&nbsp;Ohm resistors
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** [https://www.adafruit.com/product/367 button switches]
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** ''a [https://www.adafruit.com/product/160 buzzer] which works well around 4&nbsp;kHz (C<sub>8</sub>&nbsp;=&nbsp;4186&nbsp;Hz)''
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* a power supply:
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** ''a [https://www.adafruit.com/product/2011 battery]''
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** a [https://www.adafruit.com/product/1904 battery charger]
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** a [https://www.diodes.com/assets/Datasheets/ZVP4424A.pdf p-channel MOSFET]
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Buzzer and battery are not provided as they have to be dimensioned and chosen by the users.
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The developers should have access to:
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* a welding station
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* micro-USB cables
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* tools (screwdrivers, pliers, ...)
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== Software ==
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If using the [[Raspberry Pi pico]], the developers should install:
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* [https://codewith.mu/ Mu Editor]
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== Housing ==
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The system must fit inside a cylindrical [[enclosure]] of 115&nbsp;mm height and 66&nbsp;mm diameter.
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The mass of the CanSat is limited to 350&nbsp;grams.
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The antennas, transducers and other devices of the CanSat cannot oversize the can diameter until it leaves the launching system.
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The deployable subsystems and recovery system can exceed the length of the primary structure, up to a maximum length of 230&nbsp;mm.
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The Swiss Kit housing weighs about 100&nbsp;g.
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It comprises:
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* a botton plate and a top plate
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* 6 walls
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* 12 M3 bolts and screws
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= Getting started =
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Obviously, the first step is to go through the [[Development#Specifications|specifications]].
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Next, the structure of the team has to be defined.
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It is of usual practice to have one responsible team member who knows what each group (electronics, mechanics,&nbsp;...) is doing
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and what information he has to share between the groups.
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== Electronics ==
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Some of the boards are programmed using [http://micropython.org/ MicroPython].
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[https://www.adafruit.com/ Adafruit] maintains a variant called [https://learn.adafruit.com/welcome-to-circuitpython/overview circuitPython].
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A common development IDE is [https://codewith.mu/ Mu Editor] which works on different operating systems,
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including [[Install Mu Editor#Linux|linux]] and [[Install Mu Editor#Windows|Windows]].
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Start by;
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* [[Install Mu Editor#Install_Mu-Editor|installing Mu Editor]]
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* [[Install Mu Editor#Install_CircuitPython|installing CircuitPython]] on the Raspberry Pi Pico
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* trying out [https://learn.adafruit.com/getting-started-with-raspberry-pi-pico-circuitpython/circuitpython-programming-basics some simple examples], all the way to blinking the Pico board's LED
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== Enclosure ==
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The enclosure will have to withstand a landing.
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A first model can be built and tested to fall on grass and then on concrete.
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Obviously, this first enclosure has to be filled with ballast in order to weigh about 300&nbsp;g.
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== Parachute ==
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The [[parachute]] design can also start from the first day.
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= Links =
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Kits :
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* [http://canduino.eu/ canduino]
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* [https://esero.ie/wp-content/uploads/2018/12/CanSat-UserManual-2019.pdf Ireland kit]
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* [https://www.narom.no/undervisningsressurser/the-cansat-book/introduction-to-cansat/the-cansat-kit/ Norway kit]
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* [https://mcst.gov.mt/wp-content/uploads/2018/10/CanSat-kit.jpg Malta kit]
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* [https://www.esero.lu/wp-content/uploads/2020/12/Cansat_kit_2020-2021.pdf Luxembourg kit]
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* [https://www.ptrobotics.com/cansat/7505-kit-workshop-cansat.html Portugal kit]
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* [http://www.stensat.org/products/product3.html Stensat kit]
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presentations:
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* [http://esero_production.67a9f12c562e4385958ef41a7bba215b.objectstore.eu/system/uploads/files/000/006/745/original/The_CanSat_Book_2018-2019_Version_sept_2018.pdf Dutch CanSat book]
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[[Category:all]] [[Category:management]]

Latest revision as of 12:54, 10 February 2022

CanSat

This wiki presents a possible setup for the Swiss CanSat competition.

Development

The work consists to build a system in the shape of a soda can which will be launched at about 1 km altitude. As a primary mission, the CanSat will log temperature and pressure during the whole flight. Additionally, a secondary mission is defined by each competition group.

Additionally to the system engineering, the work comprises the development of:

Electronics

CanSat kit

The CanSat electronics bases on a kit comprising:

Buzzer and battery are not provided as they have to be dimensioned and chosen by the users.

The developers should have access to:

  • a welding station
  • micro-USB cables
  • tools (screwdrivers, pliers, ...)

Software

If using the Raspberry Pi pico, the developers should install:

Housing

The system must fit inside a cylindrical enclosure of 115 mm height and 66 mm diameter.

The mass of the CanSat is limited to 350 grams.

The antennas, transducers and other devices of the CanSat cannot oversize the can diameter until it leaves the launching system. The deployable subsystems and recovery system can exceed the length of the primary structure, up to a maximum length of 230 mm.

The Swiss Kit housing weighs about 100 g. It comprises:

  • a botton plate and a top plate
  • 6 walls
  • 12 M3 bolts and screws

Getting started

Obviously, the first step is to go through the specifications.

Next, the structure of the team has to be defined. It is of usual practice to have one responsible team member who knows what each group (electronics, mechanics, ...) is doing and what information he has to share between the groups.

Electronics

Some of the boards are programmed using MicroPython. Adafruit maintains a variant called circuitPython. A common development IDE is Mu Editor which works on different operating systems, including linux and Windows.

Start by;

Enclosure

The enclosure will have to withstand a landing. A first model can be built and tested to fall on grass and then on concrete. Obviously, this first enclosure has to be filled with ballast in order to weigh about 300 g.

Parachute

The parachute design can also start from the first day.

Links

Kits :

presentations:

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