AT CAD Team   

The Appropriate technology Computer-Assisted Design Team or AT CAD Team is a team set-up to create 3D-models for appropriate technology designs. The project relies on experienced 3D modellers from AOC4Studio (see http://aoc4.blogspot.com/) and is done in collaboration with Appropedia. The models made are downloadable in .skp and .dae for a small sum by contacting AOC4Studio.

Contents 1 Sofware used 2 Members 3 CAD projects 3.1 Still to commence on 3.2 Taken up CAD projects 3.2.1 Construction CAD projects 3.2.2 Employment projects 3.2.3 Transport CAD projects 3.2.4 Energy CAD projects 3.2.5 Space heating 3.2.6 Food production (& storage & consumption & preparation) projects 3.2.7 Water supply projects 3.2.8 Personal hygiene projects 3.2.9 Healthcare projects 3.2.10 Ecosystem repair 3.2.11 Miscellaneous 4 Getting started 5 See also 6 External links 7 References

[edit] Sofware used

• CAD software (Google SketchUp, Blender)
• Structural analysis software (?)
• Computational fluid dynamics software (?)
• Electronic design automation suite (KiCAD; in case Google SketchUp can not be used to contain all of the EDA data together with the full model)

[edit] Members

• KVDP
• J.M.Pearce -- also if anyone has ideas for good service learning projects for undergraduate engineers - please post them here.

[edit] CAD projects

[edit] Still to commence on

Present projects can be found at

• http://kvdp.blogspot.com/ (under "CAD models", "Virgin Earth Challenge" and "other projects")
• http://en.wikiversity.org/wiki/Appropriate_technology_designs
• http://en.wikiversity.org/wiki/Topic:Self-sufficiency
• http://peswiki.com/index.php/Directory:Home_Generation some designs here may be useful aswell

[edit] Taken up CAD projects

[edit] Construction CAD projects

• AT elevator
• Organic buildings
• AT settlement design
• Modular kiln
• AT crane
• AT CAD Team/Watchtower sleeping room

[edit] Employment projects

• AT ring spinning frame
• AT loom
• AT sewing machine

[edit] Transport CAD projects

• AT sandals; for mere walking near the residence
• AT shoes
• The C2C strap-on quad roller skates; cradle-to-cradle compliant roller skates
• The AT e-velomobile
• The amphibious dicycle
• The AT electric skateboard
• The (emissionless) car design I proposed a while ago (via wikiversity, and my blog)

• The AT freight tram; a new freight tram design, made to allow a immediate connection to the train rails; see the last paragraphs at Appropedia_talk:Village_pump#Cost.2Feffective_development_aid_projects.
• AT Interstate Traveller; a vehicle more easy to implement than the freight tram, atleast in certain cities. This as the IT uses its own lane, and is thus doesn't clog the streets.

• The AT freight aircraft, see also aircraft for a better understanding of the project
• The AT airship, a design for a 2-manned airship

• The Low cost catamaran
• The AT underwater vehicle; used as a movable moon pool, it can speed up coral rehabilitation projects or other projects requiring work below the watersurface
• The AT ship control stand; usable for both watervehicles and LTA aerial vehicles

[edit] Energy CAD projects

• AT solar power tower; a new design for a solar power tower. The design is dubbed the "Solar pyramid in pit". Unlike regular solar towers, the pyramid is build (slightly beneath) ground level. Dwellings with a heliostat mounted at the roof will focus the solar rays into the "pit". The solar pyramid in pit can then direct steam to either a reciprocating steam engine or bladed rotor steam engine ("steam turbine").
• AT solar updraft tower
• Aerial WEH; a kytone
• Tree-WEH; a CVT-equipped (see comparison of transmissions) thai bladed rotor wind energy harvester
• MicroWEH battery; a rooftop wind turbine, ie for use on skyscrapers
• WindIT_WEH; a wind energy harvester for attachment to power pylons (similar to the tree-WEH)
• File:Plant_Microbial_Fuel_Cell.png; a microbial fuel cell system
• http://en.wikipedia.org/wiki/File:SoilMFC.png MFC soil system

• AT IC motor 1, see File:IC_motor_1.png, File:Assembled IC motor (line).png, File:Turbocharger.png with the addition of a Bob Boyce oxyhydrogen generator and wood gas generator. The Dangerous Laboratories oxyhydrogen generator (see Alternative_ICE_fuel_generator, http://en.wikipedia.org/wiki/File:Oxyhydrogen_booster.JPG is an alternative
• A new design for a firebox (used to power steam engines). The firebox design is to be called the Smokeless_firebox_V2 and should be partly based on the firebox improvement, called the Smokeless_firebox_V1 (see File:Smokestackless_firebox.png ; see also Appropedia_talk:Village_pump#Nitrous_oxide_steam_engine )
• File:Microbial electrolysis cell.png; still under advisement; hydrogen may not be a good energy storage method
• File:AT_HHO_generators.JPG ; a design for an oxyhydrogen generator

[edit] Space heating

• Open-design heat pump: see File:Heat pump system.jpg, and File:Deep_water_air_cooling_(pond).JPG

[edit] Food production (& storage & consumption & preparation) projects

• ISF rice huller
• ISF plough; plough is not appropriate for day-to-day use (since no-till farming is preferred), but it could be useful in some situations
• AT CAD Team/AT traction engine: an AT traction engine proposal
• AT dish washer; see also: Appropriate food preparation, storage, consumption utensils
• SSstove; see File:Smokeless Strawbridge Stove.png
• Portable wood gas stove; see wood gas stove
• AT (microwave) oven

[edit] Water supply projects

• User:KVDP/Water supply pump
• Water well pump
• Low-cost windpump; see drawing at article

[edit] Personal hygiene projects

• File:Seawater solar destillation plant.JPG; a solar seawater destillation plant
• Open design water heater: a design of a water heating system featuring a hot water power control device and water quantity limiter; see http://en.wikipedia.org/wiki/User_talk:Slashme#Water_heating_image
• Modular solar tracking system; can be used with thermodynamic solar panels or photovoltaïc solar panels
• DIY solar thermal collectors; 2 designs; 1 of a batch heater, the other being a evacuated tube collector
• Solar heated water for washing purposes
• Communal washing machine

• Treatment pond: 3 designs; read the talk pages (images are slightly incorrect)
  • http://commons.wikimedia.org/wiki/File:Surface_Flow_Reedbed.svg
  • http://commons.wikimedia.org/wiki/File:Subsurface_Flow_Reedbed.svg
  • http://en.wikipedia.org/wiki/File:Vertical_Flow_Reedbed.svg

See also: http://en.wikipedia.org/wiki/File:Treatment-pond-raster.png

[edit] Healthcare projects

• Mummy hammock; a hammock with mosquito net cutout
• AT inhaler, see File:AT_Inhaler.JPG
• Pyrotherapy & isolation sauna, see File:Pyrotherapy_and_Isolation sauna.JPG
• AT Worm still, see Ethanol_production
• AT agricultural lands: medicinal, hygiene and IPC crops, see File:Medicinal_and_hygiene_crops.png

[edit] Ecosystem repair

• 4 composting toilet designs
• AT incinerator
• RO telescope
• DIY UAS
• Spiral pump; see http://en.wikipedia.org/wiki/File:Spiral_pump.JPG
• Automated, emissionless lawnmower: intented as both a useful project capable of providing emissions reductions, aswell as a test project for emissionless lawn mower engines (basically a regular lawn mower engine using a emissionless fuel (see http://en.wikiversity.org/wiki/Open-source_domestic_robots#Lawn_mowing_robot)

[edit] Miscellaneous

• ARC pendant
• AT prosthetics
• AT electric screwdriver
• AT travel trailer
• AT squirrelcage rotor induction motor
• AT brushed electric motor/alternator

[edit] Getting started

• The SketchUp_Beginner_Manual (see User talk:Chriswaterguy, http://www.skup.be/syntra/sketchup/)
• SketchUp Intermediate Manual
• SketchUp: the missing manual for anything not covered in the articles above

[edit] See also

• Fab lab^[1]
• MIT Fab Lab; a useful project that will allow us to make the prototypes of our open-source projects using 3D lasercutters, 3D printers, and other equipment for free
• AT CAD Team design philosophy
• Modelling progress of AT CAD projects
• CAD_model_collections

[edit] External links

• Appropedia AT CAD Team collection at Google Warehouse
• .dae-version of 3D models of the AT CAD Team
• .dae-version of 3D models of the AT CAD Team; collection #2
• .skp-version of a few files missing at the Google warehouse collection
• Costeffectiveaid-blog - Site containing some (large-scale) projects where some of the devices here can be used in

[edit] References