Hack-a-weekend PM2.5

May 27th, 2013 § 0 comments § permalink


Hack-a-weekend PM2.5


This weekend Valentin wanted to do a little hack-a-weekend as a surprise, he had ordered parts throughout the week and unveiled the weekend plan on wednesday to a few people, what he wanted to do was represent the PM2.5 data we’ve all heard about in some fun way. His initial idea involved those push button dolls that collapse when you press them from the bottom.

So with all the different PM2.5 sensors he could find the challenge began saturday. first was how do these things work! not exactly rocket science but they do mean looking up the datasheets to get the schematics and a little trial and error. then it was deciding what form it should take, perhaps a representation of a tree would be ideal! so with 3d printed parts the tree was assembled with rubber bands, unfortunately both the bands and 3d printed parts just were not working very well.

IMG_20130526_180103The 3d printed parts were scrapped in favor of Ping Pong balls just because we had (100′s) left over from a little prank on Lucio’s locker, and string!

IMG_20130526_235609Finally the little thing was built, hooked into the pachube/cosm/xively (or what ever you want to call yourself today) and data is starting to flow, we also had built a 2nd one so we can contrast the information and see which one is accurate to whats being captured (outside) just 800m from us at the US embassy in Shanghai.

so without further a-du meet the tree! well its version 1 of the tree sitting on top of burty, so we can spend some time understanding it’s readings before making a permanent one with the choosen sensor.

if you’re looking for the data, you can find it here, we’re not stating any facts and not guaranteeing the data either as we have nothing to calibrate against: https://xively.com/feeds/135383882

the code can be found on https://github.com/xinchejian/pm2.5-arduino

The pm25-tree is the data from the tree using a seeedstudio dust sensor – which doesn’t seem to be there accurate, where as the pm25 is test data from a sharp sensor which so far is accurate but blowing smoke across it did not change it where as the seeedstudio one did change, only time will tell.

stay tuned for more from Valentin

Make+ First Meetup

April 19th, 2013 § 0 comments § permalink


Weekly Creative Programming Meeting @ XinCheJian – 7-9pm – 25/03/2013

March 25th, 2013 § 0 comments § permalink

The creative programming meeting aims to bring together everybody who is interested in programming.

In the “First Creative Programming Meeting” we discussed the meaning of creativity in relation to programming. Two ideas appeared, on the one hand creativity in the finding of solutions for problems and on the other hand using programming for creative “aesthetic products” (art, music, design). Easer of this ideas appeals to you, you might find somebody in the group.

Format for the now starting “Weekly Creative Programming Meeting” on Monday evenings, is ‘present a problem’ and ‘retrieve different solutions’. Each week a few people can bring their current projects and explain their problems, when the problem “activates” some creativity of the participants it might develop into a “creative” solution finding group.

Feel free to invent a problem and bring it to xinchejian on monday evenings!

Time: Mondays at 7PM
Location: Xinchejian – 1035 Changle Lu, 2nd floor, Near Wulumuqi Lu – 长乐路1035号2楼,近乌鲁木齐路

Wednesday Meetup – Free as in beer – or 5rmb – @ XinCheJian – 7-9pm – 20/03/2013

March 20th, 2013 § 0 comments § permalink

Thanks to everyone that came out this weekend for XinCheJian’s spring cleaning, was really great to see everyone and the work done to the space is making a difference.

Updates this week:

  1. this week we want your 5rmb at the door, that money is going straight into the donation box
  2. Ladies, it’s your turn, sign up for 3months at XinCheJian and get 1 month for free, starting.. now
  3. XinCheJian is turning 3 this month, join us for a wild party @ the space mark your calendars the 26th of march – it’s a Tuesday – members can bring 1 guest, but please let us know if you are coming (for food and drink orders) by signing up here http://xinchejian.com/event2/?ee=171
  4. Roboracing – it’s on the 6th of April! 2pm – 5pm bring your 10 second cars! or your ultra fast line followers, the competition is just starting for the season, plus work on your car Thursday and Friday as it’s a tomb sweeping holiday!
  5. two new groups formed in the last 7 days, with quantified self and also creative programming.

Summary for Wednesday/本周三开放日综述

  1. 诸晓鸣 – Blind PHP/C++ Programmer making games (CN)
  2. Matthew DeBlock – DScript – a new form of writing (EN)
  3. ..You..

Wednesday Presenters/本周演讲者介绍

诸晓鸣 is Visually impaired, self taught to program in C++ and PHP and works to improve accessibility across computers for others in the same situation, from text to speech and information accessibility development and builds games!

Matthew DeBlock has invented his own writing style that looks like a script language however it encodes roman alphabet, if anyone has designed a font before, now imagine how hard it is to design an entire writing style!

First Creative Programming Meeting @ XinCheJian – 7-9pm – 18/03/2013

March 18th, 2013 § 2 comments § permalink

The creative programming meeting aims to bring together everybody who is interested in programming. 

In the first meeting we hope to find the tools to use to gather our knowledge to be able to realize together a project. All participants will have an opportunity to give a brief description of their idea (and occasionally we will breakout into smaller groups based on shared interests)

In previews discussions people expressed their interest in Visualising data with D3.js:

Or highlighted the simplisity of paper.js:

It seems to be easy to connect javascript to everything which understands OSC in one or another way:

or we do something totally different:

Time: Monday, March 18 at 7PM
Location: Xinchejian – 1035 Changle Lu, 2nd floor, Near Wulumuqi Lu – 长乐路1035号2楼,近乌鲁木齐路
Event Organizers: Olaf Hochherz

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