OPEN HARDWARE OBSERVATORY

Search Engine and Assessment Platform for sustainable Open Hardware

Category search

Professional search

Semantic search

From OHO - search engine for sustainable open hardware projects

Jump to:navigation, search

This page or action requires Javascript to work, please enable Javascript in your browser or use a browser where this is supported so that functionality can be served and is provided as requested. For further assistance, please have a look at the noscript help page.

Options | Search Clear all entries |

Condition

Printout selection

Options

Parameters [+]

limit:

The maximum number of results to return

offset:

The offset of the first result

link:

Show values as links

headers:

Display the headers/property names

mainlabel:

The label to give to the main page name

intro:

The text to display before the query results, if there are any

outro:

The text to display after the query results, if there are any

searchlabel:

Text for continuing the search

default:

The text to display if there are no query results

import-annotation:

Additional annotated data are to be copied during the parsing of a subject

propsep:

The separator between the properties of a result entry

valuesep:

The separator between the values for a property of a result

template:

The name of a template with which to display the printouts

named args:

Name the arguments passed to the template

userparam:

A value passed into each template call, if a template is used

class:

An additional CSS class to set for the list

introtemplate:

The name of a template to display before the query results, if there are any

outrotemplate:

The name of a template to display after the query results, if there are any

sep:

The separator between results

Sort options

Add sorting condition

ResultCodeDebugExtra

To embed this query inline into a wiki page use the code below.

{{#ask: [[Category:Projects]]
 |?Desc
 |?Projectimage=Image
 |?Licence
 |?ContainsPdfDrawings
 |?Firstin
 |?CadFilesAreInEditableFormat
 |format=template
 |limit=50
 |offset=20
 |link=none
 |sort=
 |order=asc
 |mainlabel=
 |template=ProjektResults
 |class=search_items_results_page pagination-container
}}

Results 21 – 70 previous 50 20 50 100 250 500 next 50

JSON CSV RSS RDF

Query log

{
    "query_string": "[[Category:Projects]]",
    "query_source": "SMWSQLStore",
    "query_time": "0.1550",
    "from_cache": false
}

Debug output SQLStore

ASK Query

[[Category:Projects]]

SQL Query

SELECT DISTINCT
t0.smw_id AS id,
  t0.smw_title AS t,
  t0.smw_namespace AS ns,
  t0.smw_iw AS iw,
  t0.smw_subobject AS so,
  t0.smw_sortkey AS sortkey, t0.smw_sort
FROM
`smw_object_ids` AS t0
INNER JOIN
(`smw_fpt_inst` AS t1
INNER JOIN
`t2` AS t2 ON t1.o_id=t2.id) ON t0.smw_id=t1.s_id
WHERE
t0.smw_iw!=':smw'
  AND t0.smw_iw!=':smw-delete'
  AND t0.smw_iw!=':smw-redi'
ORDER BY
t0.smw_sort ASC
LIMIT
55
OFFSET
20

SQL Explain

ID	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
1	SIMPLE	t2	ALL	PRIMARY				617		Using temporary; Using filesort
1	SIMPLE	t1	ref	s_id, o_id, s_id_2, o_id_2	o_id_2	5	oho_wiki_en.t2.id	13		Using index
1	SIMPLE	t0	eq_ref	PRIMARY, smw_id, smw_iw, smw_iw_2	PRIMARY	4	oho_wiki_en.t1.s_id	1		Using where

Auxilliary Tables

Temporary table t2
Recursively computed hierarchy for element(s) (510).
SELECT s_id FROM `smw_fpt_subc` WHERE o_id=510 LIMIT 1

Query Metrics

Query-Size:1
Query-Depth:0

Errors and Warnings

None

$4 do it yourself Welding Table Clamps

I made several $50 dog hole clamps for my CertiFlat welding table for about $4 each using Harbor Freight F-clamps and a handful ...

   Contains PDF Blueprints: No

   Contains CAD Files: No

License: unknown

$40 Moxon Vise - Easy to build in an afternoon

   Contains PDF Blueprints: No

   Contains CAD Files: No

License: unknown

$40 do it yourself Sandblaster Setup

Quick video showing the first phase of our super cheap sandblasting setup. Subscribe for more how-to and other car videos

   Contains PDF Blueprints: No

   Contains CAD Files: No

License: unknown

$5 Blanket Ladder - build and free plans

Build a 6 foot blanket

   Contains PDF Blueprints: No

   Contains CAD Files: No

License: unknown

$5 do it yourself Hot Wire Foam Cutter: 9 Steps (with Pictures) - Instructables

By inHey Guys, It has been a long time I have not written an instructable.In this instructable, I will show you how to make a StyroFoam Cutter using things that...

   Contains PDF Blueprints: No

   Contains CAD Files: No

License: unknown

$55 Mini DIY Walk In Greenhouse From Amazon Review After 3 Months, is it worth the money?

In this video I do a review on the mini

   Contains PDF Blueprints: No

   Contains CAD Files: No

License: unknown

$7 Chicken Tractor Plans Blueprints

Looking for a Chicken Tractor plans for a coop that can be moved by one man and still sleep up to 24 chickens? Plans are ...

   Contains PDF Blueprints: No

   Contains CAD Files: No

License: unknown

Walking AIDS 80% HEALTH DEBUFF Stamina Dragon Knight PVP Build - ESO One Tamriel 2

Purely a tank with some sexy debuff for Raid/Group PVP Intro: 0:10 Sets: 0:35 Potions: 2:14 CP ...

   Contains PDF Blueprints: No

   Contains CAD Files: No

License: unknown

( 1) Shop Tips: Make the gear cutter yourself

In this video, I'd like to show you how you can make a gear making cutter yourself. The principle is ...

   Contains PDF Blueprints: No

   Contains CAD Files: No

License: unknown

($6000 Cattle Feeder for $500) Homemade Arduino Automatic Cattle Feeder

Homemade Arduino Automatic

   Contains PDF Blueprints: No

   Contains CAD Files: No

License: unknown

(1 of 2) How to make a homemade grinding machine with recyclable material, Part One

It is a homemade grinding machine with 100% recyclable material, for small parts.

   Contains PDF Blueprints: No

   Contains CAD Files: No

License: unknown

(1/3) Disc Grinder + Belt Sander Machine Tag build by yourself

? Video from the Lutz to the plate + belt grinder // https://youtu.be/3y9oiWL-8Ko? NEW.WORKSTATT new possibilities.In this ...

   Contains PDF Blueprints: No

   Contains CAD Files: No

License: unknown

(1/3) Disc Grinder + Belt Sander Machine Tag build by yourself 2

   Contains PDF Blueprints: No

   Contains CAD Files: No

License: unknown

(1/4) Build workbench drawers for the workshop itself

? DETAILS TO THE VIDEO? / NEW.WORKSTATT new possibilities. /// In this video I show the construction of my new ...

   Contains PDF Blueprints: No

   Contains CAD Files: No

License: unknown

(1/7/10) TFCTech: Wire Draw Bench work progress 5

   Contains PDF Blueprints: No

   Contains CAD Files: No

License: unknown

(2)Power Supply Build;P1,Parts"n"Plans for the RIDEN RD6006.

Lets make a real portable powerstation-INSIDE-its own car Batt Case.24V DC+240V..But must be Quiet

   Contains PDF Blueprints: No

   Contains CAD Files: No

License: unknown

(2/3) Disc grinder + belt grinder rebuild yourself Build grinder yourself

? NEW.WERKSTATT new possibilities.In this video series, I show the conversion of a plate / belt grinder I over ...

   Contains PDF Blueprints: No

   Contains CAD Files: No

License: unknown

(2/4) Multifunctional workbench with integrated Bosch GTS 10XC - build yourself - step by step

VIDEO DESCRIPTION (Important Info's) Moin Moin and welcome to this new video, more specifically to ...

   Contains PDF Blueprints: No

   Contains CAD Files: No

License: unknown

(4) How to make an air raid siren

   Contains PDF Blueprints: No

   Contains CAD Files: No

License: unknown

(Arduino Project) Automatic Fish Feeder - DIY

Using Arduino Uno mini servo 9g 1 bottle.

   Contains PDF Blueprints: No

   Contains CAD Files: No

License: unknown

(Cabview) FENDT 716 VARIO DISCS 3 METERS OWN CONSTRUCTION Incorporating catch crop

   Contains PDF Blueprints: No

   Contains CAD Files: No

License: unknown

(D.I.Y.) How to make an infrared motion detector

This tutorial is for all the people that have a basic knowledge in electronics and are wondering how could a motion detector works.

   Contains PDF Blueprints: No

   Contains CAD Files: No

License: unknown

(DIY Video) Homemade Five Ton Hydraulic Press, Simple To Install ...

“How to make a homemade hydraulic press with a car jack, u channel steel (u beam) and threaded bar. It is not finished. The jack should be bolt down o

   Contains PDF Blueprints: No

   Contains CAD Files: No

License: unknown

(DIY) (DIY) Manual pump double effect, Manual pump double effect

Construction of a

   Contains PDF Blueprints: No

   Contains CAD Files: No

License: unknown

(DIY) 3rd Part (DIY) Manual pump double effect, manual pump double effect

Last part, Construction of an incubator

   Contains PDF Blueprints: No

   Contains CAD Files: No

License: unknown

(DIY) EIGENBAU MAGNETRÜHRER

Built-in Quad Magnetic Stirrer Construction Manual at: https: //drive.google.com/file/d/0B1DP3vr3ZSrARlhCY3p2bXFz ....

   Contains PDF Blueprints: No

   Contains CAD Files: No

License: unknown

(DIY) Etching cuvette + explanation

Hello everybody, in this video you can see my self-made etching cuvette. I hope the video can give you an incentive ...

   Contains PDF Blueprints: No

   Contains CAD Files: No

License: unknown

(DIY) HOW TO MAKE SIMPLE SOLAR COOKER very easily at home....

This video is about "(DIY) HOW TO MAKE SIMPLE SOLAR COOKER very easily at home...."SUBSCRIBE- https://www.youtube.com ...

   Contains PDF Blueprints: No

   Contains CAD Files: No

License: unknown

(DIY) Homemade Digital Speedometer

Its working Thanks to Jeff who originally created it ,modified by me ...

   Contains PDF Blueprints: No

   Contains CAD Files: No

License: unknown

(DIY) How To Patch A Bike Tube Without A Patch Kit *House Hold Iteams*

do it yourself How To Patch A Bike Tube Without A Patch Kit House Hold Iteams I feel like this video will help some people out so here it is ...

   Contains PDF Blueprints: No

   Contains CAD Files: No

License: unknown

(DIY) How to Make Orange Juicer Thaitrick

   Contains PDF Blueprints: No

   Contains CAD Files: No

License: unknown

(DIY) Peltier Box Cooler Version 2

Discord link https://discord.gg/GC8QGUv.

   Contains PDF Blueprints: No

   Contains CAD Files: No

License: unknown

(DIY) Three digit digital frequency meter with MM74C925 ...

This small frequency meter can measure any signal up to a maximum of 2Khz. It is based on the well-known Farchild MM74C925 chip. On the author's website we can...

   Contains PDF Blueprints: No

   Contains CAD Files: No

License: unknown

(DIY) Tiny sandblasting gun for 4$ :)

Hi On youtube I saw a lot of similar videos with

   Contains PDF Blueprints: No

   Contains CAD Files: No

License: unknown

(DIY) Waste-oil-burner, what a hotty (Gravity-Drip)

The link to an update on this burner: https://www.youtube.com/watch?v=-Yz0tjDfYL0 SO I build this little burner over the course of ...

   Contains PDF Blueprints: No

   Contains CAD Files: No

License: unknown

(DIY)Vlog 17: Making Dumbbell Rack?

27 September 2016 A wood dumbbell rack diy.

   Contains PDF Blueprints: No

   Contains CAD Files: No

License: unknown

(EASY) DIY Textured Photography Background DIY Styling Boards

Learn how to make your own textured

   Contains PDF Blueprints: No

   Contains CAD Files: No

License: unknown

(F) How To Make A Cordless Tool Cabinet (ep34)

https://nickferry.com/2014/12/how-to-make-a-cordless-tool... Get your workshop more organized and your tools in ...

   Contains PDF Blueprints: No

   Contains CAD Files: No

License: unknown

(HD) Homemade Quadrocopter Test Flight Crius SE (M M Products)

   Contains PDF Blueprints: No

   Contains CAD Files: No

License: unknown

(HOW TO MAKE) A Magnetic Stirrer Hotplate

Here we have a magnetic stirrer hotplate with variable speed and temperature control This project is a bit more complex than the ...

   Contains PDF Blueprints: No

   Contains CAD Files: No

License: unknown

(HOW TO MAKE) A Simple Magnetic Stirrer from Everyday Items

As you can see I've made a very simple homemade magnetic

   Contains PDF Blueprints: No

   Contains CAD Files: No

License: unknown

(HOW2) Build Jacob's Ladder by Microwave Transformer - High Voltage Arcs

For more detail contact me: lucas.perocco@outlook.com Lucas Perocco Moreira chillinglu thechillinglu chilling lu Peaceful ...

   Contains PDF Blueprints: No

   Contains CAD Files: No

License: unknown

(How 2) Build a controllable power supply yourself Fascination with technology

In this video we show you how to build a controllable power supply. Have fun We assume no liability for ...

   Contains PDF Blueprints: No

   Contains CAD Files: No

License: unknown

(How 2) build hydroelectric power plant itself Fascination with technology

In this video we show you how you can build a hydroelectric power plant yourself. Have fun ...

   Contains PDF Blueprints: No

   Contains CAD Files: No

License: unknown

(How To) Make A Steel Wheel Wood Burner Easy do it yourself Project

How to make a steel wheel wood burner/ BBQ. You just need: 3-4 Steel wheels. Something to cut metal. And something to stick it ...

   Contains PDF Blueprints: No

   Contains CAD Files: No

License: unknown

(How2) Build Melting Furnace Cast Aluminum

At some point you get to the point where you think: Actually, something would have to pour something itself. Said and done ...

   Contains PDF Blueprints: No

   Contains CAD Files: No

License: unknown

(How2) Build experimental power supply yourself

Today in the video: How to use a commercial computer power supply an experimental power supply for your own applications ...

   Contains PDF Blueprints: No

   Contains CAD Files: No

License: unknown

(How2) Build mini wind turbine yourself

Approximately 1 watt at full wind.

   Contains PDF Blueprints: No

   Contains CAD Files: No

License: unknown

(How2) Build workshop trolley / drawer cabinet yourself

So, today the blog post to the tool cart or drawer cabinet. I have built it for me as a base cabinet for the future workbench, but also as a standalone solution...

   Contains PDF Blueprints: No

   Contains CAD Files: No

License: unknown

(JLCPCB) BitBastelei 279 - DIY Networked Smoke Detectors - Part 2

Sponsored by https://jlcpcb.com/ - 10 prototype PCBs from 2$ Already in the last episode I had explained that for a ...

   Contains PDF Blueprints: No

   Contains CAD Files: No

License: unknown

Retrieved from "https://en.oho.wiki/wiki/Special:Ask"

OPEN HARDWARE OBSERVATORY 2020

|

|

|

Feedback for Beta Version

|

|