Yogya Day 5

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Day 5 (05 Sept 2015)


Open and Generic Lab Equipment Workshop

Led by Marc


Today I listening the great lecture from Marc about the story of Open Source Hardware. In my opinion that’s very interesting because he can teach the hight tech laboratory equipment to be a easy principle by use the general object from daily life and put some idea or concept of technical in this object. That’s easy way to create laboratory equipment. The First he told about “Centrifuge machine” by came back to basic principle of gravity force and how to make a force to take solid object down to bottom of test tube. And relate to daily object that can rotate such as blender, fan, and hardish. And show some example to remake the old computer element to be a centrifuge by design the system to fix the test tube and some monitor to show the information.

Next I learned about the basic principle of Spectrophotometer by start with the light of rainbow. What happen if the Light emitting diode connect to the battery and what the different of voltage effect to the LED. Next he show the phototype of spectra photo meter, How it’s work, And the element of this machine.


Finally I learning about the principle of Microscope. It’s very interesting because That’s very easy principle to make a zoom lens by flip the original lens of camera. The result is the picture from reflect lens have change to bigger than general side. And I can use this principle to develop WebCam flip lens and make some structure to fix it add some light source and connect to the computer.

When I listen this lecture I very interesting because it’s very easy and everyone can do it. I connect to the education problem in Thailand many people think we don’t have money enough for education. But I think we don’t have creation and knowledge to make low-cost lab equipment. In opinion of Architect I don’t know many information of lab equipment, So I think many technology in architecture can’t connect to the local people. I interest in sustainable architecture and this concept can work my idea.


In this morning session, we looked at different DIY lab equipments where Marc shared the process of making them such as centrifuge, turbidity meter/spectrophotometer and microscopy. What stood out to me most during this session was the intersection between open science and impact work. For example, Marc shared about GynePunk, a project in Spain working on women’s issue by creating smears, fluid analysis, PAPs, and more at a low-cost making these treatments affordable and accessible for marginalized communities such as prostitutes. I find this biggemr purpose behind open science very inspiring and I can just imagine how much more positive change we can create if we can make open science more known. - KW

In the morning Marc explained about biotechnology, science and about light. He said we can use cheap equipment to build lab equipment. In this session some of the words coming up that I don't understand anyway I write it down in Burmese and keep listen. He explained about basic microscope with photos and I start understand about and concept. Also show his webcam microscope prototypes. The concept is like we can use cheap electronic for building lab equipment. Also explain about the light and introduce about basic concept. I had to ask some of the words in the session to other person to understand. (TZ)

Marc said, It is obvious that the river is dirty, we don’t need to take professional equipment to test the water and tell people We can’t drink the water. The European researcher brought lots of equipment here and it is no use. It is the field of social science.

For me is really excited to understand where the science comes from. To build a universal and objective language let everyone understand and can share knowledge, Like what you mean red is the same red of mine. But I come from social science background and I am always skeptical about a universal and objective language. Like Jacques Rancière’s book: disagreement. Science is a way to reach the goal, but not the only way, like Hermes said. I think is quite nice to think about science in social context and exchange science and social prepective. - SN


Trip to Sinar lama electronic store

Me, Mark, Sachet, Rosan, Senee, Ivan, Tayzar and Charath walked into an electronics store. We walked through the narrow streets, and I really liked the houses. Then we came to the river and I saw the dirtiest river in my life. But Rosan said, I was not in Nepal. In the end we came to the store and Mark bought all he needed.

-Talgat 705-

was the second time i visit sinar lama, first time i went there to buy some electronic parts to build my digital thermometer i bought resistors, LM 35 heat sensor, and LCD display. then i follow the instruction on instructables. the second change to visit this store again i found out another sensor called photocell


Rearranging the workspace

Afternoon prototyping session

alt text

After the shopping team came back. We have some time to discussion about our project. Next time Marc talk about the prototyping of spectro photo meter and how to made this process by easy element. The first we talking about how this machine work and the relationship between light source, object, and receptor. Next we worked by use LED green color with photo sensor. We discussion about the box for fix this element by use the concept “minimum” because in my opinion we should made a minimum surface that’s light can reflecting. by used the paper bored cut to be a cube dimension 3 cm x 3 cm x 3 cm. The than minimum surface we thing about idea to design this prototype to be a compact tools. They can carry it every time or look like key chain. We made a hold to fit the LED and photo sensor. Next We used the made a hold to put the tube, And closed it by hot glue. Finally we test with 3 different liquid such as clear water, tea, and blue ink. The result is 0.04 for water, 0.08 for tea and 0.12 for blue ink. That’s mean our machine can work with this system and package. After that we discussion with other group by concentrate to the reason of different form and the result from their machine.

When finish this activity I think, I learn a lot of new thing about how to used basic object to make some special thing by add creative and knowledge. I imagine to other machine in hight laboratory and how to make it by daily life object.


Different ways to clean water:

Microorganisms, Bacteria and Viruses:

  • Coliform bacteria live in soil or vegetation and in the gastrointestinal tract of animals. Coliforms enter water supplies from the direct disposal of waste into streams or lakes, or from runoff from wooded areas, pastures, feedlots, septic tanks, and sewage plants into streams or groundwater. In addition, coliforms can enter an individual house via back flow of water from a contaminated source, carbon filters, or leaking well caps that allow dirt and dead organisms to fall into the water.
  • Giardia has become more prevalent in the past few years as a waterborne disease, and a few large outbreaks that have occurred in the U.S. Giardia are flagellated protozoa that are parasitic in the intestines of humans and animals.
  • Cryptosporidium parvum is a protozoan parasite that causes cryptosporidiosis, which has gained notoriety in the past five years. In 1993, over 400,000 people in Milwaukee, Wisconsin became ill with it after drinking contaminated water.
  • Hepatitis A is an enteric virus that is very small. It can be transferred through contaminated water, causing outbreaks. The virus is excreted by a person carrying it, and if the sewage contaminates the water supply, then the virus is carried in the water until it is consumed by a host. Symptoms such as an inflamed liver, accompanied by lassitude, anorexia, weakness, nausea, fever and jaundice are common.
  • Helminths are parasitic worms that grow and multiply in sewage and wet soil. They enter the body by burrowing through the skin, or by ingestion of the worm in one of its many lifecycle phases. The eggs as well as the adult and larval forms of the worms are large enough to be trapped during conventional water treatments, so they tend not be a problem in water systems.

Coli bac.jpg


this LDR sensor we used to make the simple tools using LDR sensor + green LEd + battery + small transparent tube pipe and multi meter measure here is the diagram : Multimeter + led + LDR.jpg -ivan-

Case with the flat tyre

Our journey to Taman Kuliner Jogyakarta began with a lot of enthusiasm and energy late around 9 PM. Midway through the ride, I realized my bike swaying sideways, decided to stop and found that the bike had flat rear tyre. With Kah Wei inquiring about the nearest workshop with the local pedestrians. Rushed into action, we'd follow the directions only to be disappointed with either misdirection or closed workshop. After a search of around 45 minutes riding a flat tyre bike, we finally found a place where it could be fixed. Relieved, yet with no expectations of having a usable tube, I followed the mechanic work his way getting the tube out. First, I was surprised by the way he took out the tube. He did not have to take the whole tyre out like we do it in Nepal, but just got the tube................................................. -SM

A group of 6 people in our team were travelling on a bike to go on the festival happening in central java. It was the last day of the week long festival and was closing at 10 pm. Hermes was the one who had little idea about places around Indonesia. But, he cannot speak Bhasa Indonesia language. Rest all of us were just following him without any knowledge about language and places as well. We were somewhere in a middle of the way, when Sachet's bike tyre went flat. It was already 9.15 pm by then. We have no idea where to go to fix the tyre. Luckily, we had Kahwei on our team who could speak Malay which is much similar to Bhasa Indonesia. She started talking with pedestrians to find out the way to the nearest bike workshop. According to the pedestrian, it was on the opposite end of the crossroad where we were standing. She was guiding us on the way to the bike workshop. We crossed the intersection but we couldn't find any workshop. She, then asked another pedestrian nearby. According to the pedestrian, bike workshop was somewhere near the place where previous pedestrian had suggested us. So, we turned back our bikes to same place. We could not find any bike workshop. We were just going round and round in same place for more than 40 minutes. We found the workshop to fix Sachet's flat tyre. We, then planned to go to the festival although it was already finished. Finally, we reached at the festival, had some drinks and then returned back since everything was over. But, riding around the road searching for bike workshop and exploring city night was much fun.


I'll be frank. I haven't laughed that much in a while. Or made that many u-turns. - CBR

20150905 212634.jpg

Sachet's tire flat

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Man working on curing

-Talgat 705-