OPEN HARDWARE OBSERVATORY Free Blueprints for Sustainable Open Hardware	Category search Professional search

About Open Hardware Observatory OHO e.V.

OHO e.V.: The non-profit association Open Hardware Observatory e.V. (OHO) was founded in 2020 as a Spin-Off of the Technical University Berlin.	Our goal is to promote technologies for sustainable development and to make the blueprints available to everyone as open source projects.
Our work areas are project research and project selection, standardization of technical documentation, quality testing and certification of projects, and making them as widely known as possible.	Our vision is to create a "Wikipedia for Sustainable Technologies" that enables people, organizations and companies from all over the world to make our planet more sustainable.

Free Blueprints and Videos of Sustainable Technologies

Renewable energies

 
   Floating Dome Biodigestor

   Contains PDF Blueprints: Yes

   Contains CAD Files: Yes

License: CCBYSA40

 
   Solar Food Dryer for Vegetables

   Contains PDF Blueprints: Yes

   Contains CAD Files: Yes

License: CCBYSA40

 
   Zigzag Solar water heater
   Blueprints and instructions for the construction of a solar water heater Based on manual published by WOT. It may be helpful in constructing solar collectors an...

   Contains PDF Blueprints: Yes

   Contains CAD Files: Yes

License: COHL12

 
   DIY Solar Water Heater
   Reference: https://www.youtube.com/watch?v=qsBIs7nAQ54&feature=emb_imp_woyt High efficiency, DIY solar water heater panel with basic tools and materials. Includ...

   Contains PDF Blueprints: Yes

   Contains CAD Files: Yes

License: CCBYSA40

Renewable energies > Wind turbines

 
   Lattice Tower Mast for Wind Turbine

   Contains PDF Blueprints: Yes

   Contains CAD Files: Yes

License: CCBYSA40

 
   Windmill Blades - Diameters 60 to 120 mm

   Contains PDF Blueprints: Yes

   Contains CAD Files: Yes

License: CCBYSA40

 
   Wind Mill Pump
   Plans and 3d models to build a DIY equipment to pump water using a Savonius turbine and a diaphragm pump. Original design by Brace Research Institute, published...

   Contains PDF Blueprints: Yes

   Contains CAD Files: Yes

License: CCBYSA40

Renewable energies > Hydropower

 
   Axial Flow Turbine 25kW

   Contains PDF Blueprints: Yes

   Contains CAD Files: Yes

License: CCBYSA40

 
   Himalayan Water Wheel
   Pelton type open impeller waterwheel for dynamo electric power generation (Grinder not included) Project published under CC-BY-SA 4.0 license This project was s...

   Contains PDF Blueprints: Yes

   Contains CAD Files: Yes

License: CCBYSA40

 
   Cross Flow Turbine
   technical drawings and 3d models for a complete cross-flow turbine assembly. project published under license CC-BY-SA 4.0 This project was supported by the germ...

   Contains PDF Blueprints: Yes

   Contains CAD Files: Yes

License: CCBYSA40

 
   Small water turbine
   This project shows the construction plans for a small 5 kW water turbine based on the research of Dr. Mohammad Durali at MIT. According to the original developm...

   Contains PDF Blueprints: Yes

   Contains CAD Files: Yes

License: COHL12

Business, industry > Woodworking

 
   Table for Wood Router with Storage Spaces

   Contains PDF Blueprints: Yes

   Contains CAD Files: Yes

License: CCBYSA40

 
   Circular Table Saw

   Contains PDF Blueprints: Yes

   Contains CAD Files: Yes

License: CCBYSA40

 
   Woodworking bench with carpentry vice

   Contains PDF Blueprints: Yes

   Contains CAD Files: Yes

License: CCBYSA40

 
   Wood Turning Lathe
   Drawings and 3d models to build a woodworking lathe with 1500 mm bed Project published under CC-BY-SA 4.0 license

   Contains PDF Blueprints: Yes

   Contains CAD Files: Yes

License: CCBYSA40

Business, industry > Metalworking

 
   Welding Gun - Multifunctional and DIY

   Contains PDF Blueprints: Yes

   Contains CAD Files: Yes

License: CCBYSA40

 
   Electric Saw for Small Metal Works

   Contains PDF Blueprints: Yes

   Contains CAD Files: Yes

License: CCBYSA40

 
   Cutting shears
   Detailed drawings for building a Metal cutting shears Project published under CC-BY-SA 4.0 license Project development: Reverse engineering without adviser (B1,...

   Contains PDF Blueprints: Yes

   Contains CAD Files: Yes

License: CCBYSA40

 
   Metal Folding Machine

   Contains PDF Blueprints: Yes

   Contains CAD Files: Yes

License: COHL12

Health

 
   Stand for Inspection Microscope

   Contains PDF Blueprints: Yes

   Contains CAD Files: Yes

License: CCBYSA40

 
   Baby Incubator Simple and Effective

   Contains PDF Blueprints: Yes

   Contains CAD Files: Yes

License: CCBYSA40

 
   Tube Manometer
   Uses in practical experiments and demonstrations 1. To demonstrate that the pressure of a liquid is equal in all directions. 2. To determine the specific gravit...

   Contains PDF Blueprints: Yes

   Contains CAD Files: Yes

License: CCBYSA40

 
   Cosi measure new
   COSI Measure is an open source multipurpose 3-axis robot operating in a large volume, that can be equipped with e.g. field mapping probes for static or dynamic...

   Contains PDF Blueprints: Yes

   Contains CAD Files: Yes

License: COHL12

Agriculture, forest

 
   Rice Threshing Machine - Pedal Driven

   Contains PDF Blueprints: Yes

   Contains CAD Files: Yes

License: CCBYSA40

 
   Safe and Sturdy Shelter
   Rabbit hutch with a good level of security, protecting the rabbits from predators.

   Contains PDF Blueprints: Yes

   Contains CAD Files: Yes

License: CCBYSA40

 
   Goat Milking Parlor
   Goat milking station, easy to build, retractable in case of short parlor stalls.

   Contains PDF Blueprints: Yes

   Contains CAD Files: Yes

License: CCBYSA40

 
   Bee Hive Frame
   This project shows a Lanqstroth hive and its parts The brood chamber provides space for eggs and brood although sometimes the queen will lay eggs in a few combs...

   Contains PDF Blueprints: Yes

   Contains CAD Files: Yes

License: CCBY40

Business, industry > Food processing

 
   Hammer Mill for Corn Processing

   Contains PDF Blueprints: Yes

   Contains CAD Files: Yes

License: CCBYSA40

 
   Tray Dryer Semicontinuous - for Vegetables

   Contains PDF Blueprints: Yes

   Contains CAD Files: Yes

License: CCBYSA40

 
   Crown Cap Machine
   Hand operated device for sealing bottle tops Project published under CERN-OHL Licence

   Contains PDF Blueprints: Yes

   Contains CAD Files: Yes

License: COHL12

 
   Corn mill
   Homemade Corn Mill powered by a diesel engine. Equipment developed by Reverse Engineering Project development: Reverse engineering without adviser (B1, P1) Refe...

   Contains PDF Blueprints: Yes

   Contains CAD Files: Yes

License: CCBYSA

Business, industry > Construction

 
   Engineers Level - practical and resistant

   Contains PDF Blueprints: Yes

   Contains CAD Files: Yes

License: CCBYSA40

 
   Brick Making Machine CETA-RAM - for soil bricks

   Contains PDF Blueprints: Yes

   Contains CAD Files: Yes

License: CCBYSA40

 
   Wheel Barrow
   Engineering drawings detailing how to make a wheelbarrow Consisting of a tray bolted to two handles and two legs, ideal for small/medium loads for the household...

   Contains PDF Blueprints: Yes

   Contains CAD Files: Yes

License: COHL12

Mobility, Logistics

 
   Flat Bottom Boat

   Contains PDF Blueprints: Yes

   Contains CAD Files: Yes

License: CCBYSA40

 
   Long Andre cargo bike
   In this project, plans and instructions for the construction of a Long André cargo bike are shown. This bike, as documented here, was developed by Andreas Trieb...

   Contains PDF Blueprints: Yes

   Contains CAD Files: Yes

License: CCBYSA40

 
   Carla Cargo Crowd
   Carla Cargo allows you to transport heavy loads quickly, environmentally friendly and without sitting in traffic. It can be combined with any regular bicycle or...

   Contains PDF Blueprints: Yes

   Contains CAD Files: Yes

License: CCBYSA40

 
   Workshop Crane powered by drill
   Workshop crane powered by a hand drill Based on a video, the necessary parameters were determined to build the equipment in a professional way. Several tools we...

   Contains PDF Blueprints: Yes

   Contains CAD Files: Yes

License: CCBYSA40

more

About Open Hardware

Open Hardware for Startups and Small Businesses Small businesses, unlike medium and large enterprises, have limited resources for research and development. more Open Hardware in Science and Research At universities immense amounts of money are invested annually in the development of technologies for sustainable development. more Open Hardware in Development Cooperation In technical development cooperation, thousands of good and mature projects have been realized in the last decades. more Open Hardware for civil society and social projects Many social projects require machines, technologies. However, they usually have very limited financial resources. more

Download free PDF-blueprints and parts lists

Concrete Block Making Machine - capacity 100 pieces per hour Wind Turbine with Vertical Metal Drum Sails Darrieus Turbine Made of PVC Pipes Horizontal Shaft Turbine With Security Tail Engineer's Level Made of 19 mm Tubing Manual Winnower for Grains Peanut Roaster - Capacity 60kg/hr Windmill Blades - Diameter 1.5 to 3 m Stationary Solar Fish Drier 37 m2 Potery Wheel with 5hp Motor Incubator for Babies - Warm and Humidified Piston lift Pump DTU Pipe Bending Tool Portable Wooden Chicken Coop with Built-In Nesting Boxes Raised Hutch of 3.5 m2 Whater Wheel Diameter 2m Savonius Rotor of 1m Diameter Segner Turbine for 4m Pit Radial Drill made from Auto Parts VentMon T 0.4 In-line Fan Test Device and Monitor JPL Open Source Rover Moonrat a Second Generation portable Incubator Ventilaid breathing device Mk III Open Hardware Loom - OHLOOM MAKERphone an educational DIY mobile phone Alternative Emergency Ventilation System AmboVent 1690.108 BCN3D Sigma 3D Printer Savonius Rotor with Two Blade Levels Peeling Machine for Sunflower Seeds Rocket Bread Oven Press for Water Filters OxyGEN artificial respirator made of acrylic, wood, metal, etc. Bicycle Luggage Carrier for LPG Gas Cylinder Wood Router Table - Size 560 mm Santa Cruz Solar Collector Handcart - Height 1220 mm Two Pan Balance - DIY Spoked Wheel Jig Scale Made with a Flat Spring Donkey Cart... further results more

OHO Certification Center

Until recently, there were no technical standards for Open Hardware.
In 2020, we developed the world's first standard for Open Hardware together with the German Institute for Standardization (DIN) and other organizations.

This standard uses a community-based peer review process that is often used for scientific publications.
OHO is the first platform on which this procedure is applied.
The aim of the Certification Center is to guarantee that projects published on OHO meet international quality criteria.

more

OHO Search Engine

Many good Open Hardware Projects are unknown and difficult to find in the web.
The multilingual OHO Search Engine aims to show as many projects as possible on a common platform.

The Search Engine crawls the whole web and selects relevant search results according to different algorithms and categorizes them.
The Search Engine has a keyword search, a professional search and a category search.

more

Category search Professional search About OHO Search Engine

Cooperation Partners

TU Berlin Technical University Berlin TU Berlin	Wikimedia Deutschland Society for the Promotion of Free Knowledge	anstiftung We promote, connect, and explore spaces and networks of do-it-yourself.	Appropedia Is the site for collaborative solutions in sustainability, poverty reduction and international development
FARMHACK Worldwide Community for Open Source Farm Innovation	Hans Sauer Stiftung Charitable foundation which is both supportive and foundation operationally active	L´atelier paysan We are a French-speaking collective of small-scale farmers, employees and agricultural development organisations	MEKANIKA Innovative open source tools and machines and free learning ressources
Open Source Ecology Deutschland e.V. Gemeinütziger Verein, der Open Source Hardware Projekte realisiert und unterstützt	Open Source Hardware Association A non-profit organization that advocates for open-source hardware	Practical Action (previously ITDG) Practical Action is an innovative international development organisation	Precious Plastic We design and develop machines to recycle plastic and we tell the world how to replicate them
Werkstatt Lastenrad Ist ein Projekt von anstiftung gemeinnützige Stiftung bürgerlichen Rechts	Wikifactory Social platform for collaborative product development	Working Group on Development Techniques Student association at University of Twente, engaged in technical development cooperation