 So, thank you very much for being here today and thank you the organizer for giving me a chance to come here and speak about our Project Pocket Sign Lab. I'm going to pass this device around so you can take a look at the device. It's okay to see that, yeah. I prepared some notes so it's easier because I got notes but there's so many people here. So my name is Hon Phu Thanh. I come from Vietnam. I'm one of the contributors of ForceAsia. What is ForceAsia? ForceAsia is an open-source developer community based in Asia. We try to get more Asian contributors to various open-source projects and our idea is to foster the collaboration and create ideas and applications to improve people's lives through open technology. The organization started in 2009. These are some of the projects developed by ForceAsia. So, since the staff we mostly focus on software but why now we are doing hardware so I want to I would tell the story in a bit. So how do I say that? So every year at the ForceAsia we organize one event similar to ForceDom to get people together and work on projects. In 2014 there was a ForceAsia event in Nong Penh. That when I met this person, Praveen Patel, he is a business teacher from India, from a very small town called Belgaom. It was also his first time driver outside of India. He came to ForceAsia to talk about how to teach student Python in his country. He taught it and said there is really challenging in terms of science subject because students never get a whole of a device. For instance, the whole school only have one in the lab. They basically learn from theory but they don't have one hand on and he come to us and say okay is there any solution out there that could help the student to understand better how to work with electronics. And as we a community we try to foster education and we make the commitment to Praveen. Okay so we will check around to see if somebody only doing something out there around the world and we can collaborate and bring this into school in India. A year later Praveen came to earth and show us something called the C-Laflet. So the C-Laflet also a very small device like a mini laboratory to measure electric way and many other functions. So Praveen told us so is it possible to promote it. Now they have like basic functions but it's not entirely optimized for learners. So they asked if the First Asia community can help to extend the device. And that time the device is a closed source device in First Asia. We only want to release open source project. So several months of discussion from the original C-Laflet there was a developer called Cheat-In, an electric student from India working on this project. And we spent several weeks to convince them okay if you want the community to help and contribute you should open the schematics of the device. And then at one point Cheat-In agreed that he will open the schematics and wish everything on github so that people can collaborate and work on this project. And then after the device is open that give more people opportunity to look into it then we come and this is the first version of something that make from by the community based on the C-Laflet. The first version of the BS lab has the form of the Arrino Uno. The reason why we chose to do it in this form because we want to make use of the existing case in the market. So you only view the board and get the case out there. So we produce I think about 200 of this pocket science lab and to try to distribute and get feedback from from the people. In 2017 we bring this device to the CCC and some people recommended us that we should not mount different components on two sides of the board but together have everything on one side which is can't reduce the cost to 25 percent. So we did that and we redesigned the board the second at the second time and this time we followed Arrino Mega form again with the power button to use the case and in this at this time we implement Bluetooth and Wi-Fi module and also enhance some of the thing that you see on the board on the back hand side you can see the description of the pin and we also include more for more digital pins and right now so this is just a recap of the development so far of the BS lab so it come from the C-Laflet and then pocket science lab hardware and then different clients that we build from the community BS lab desktop Android and web app and right now this is something that we having I think that I forgot in the beginning what is the usage of this device I've been talking about history yeah okay so basically it is a four-channel oscilloscope it's a combination of the oscilloscope a large logic analyzer multi meter it also come with a power source so everything in one device include different instrument how you can run the device you just need a USB connector to plug into your phone so we develop an open source and application that have you that have to control the device and it also have the Python desktop app is it clear enough yes thank you okay so basically that how it's looked right now so if you the application available on Android and also on Android when you open it you will see different function and feature that you can place around with this is the interface of the Android app how it look like so we just got inspired by the traditional device and have we try to make the interface very close to the real oscilloscope there also is power source and multi meter logic analyzer wave generator and this is something that I really like about the device even though I don't have an electronic background when you open instrument at the end there is a button that indicate documentation so the team actually integrate the guy how how to use the device into the application so when you click on it it will show you what a oscilloscope and what you can do with it so this is really optimized for young student in beginner who want to learn electronics the desktop app it look a little bit less modern than the Android one and we also have a number of people working on it but it seems that it is like to improve more of the interface and try now this is the combination of all the functionalities of the device to somewhere right again because I did not explain it clearly in the beginning another thing that you can do with the device there's that you can see there are a lot of valuable pins that you can that you can insert sensor to measure data one of the use case is that in the classroom the student tend to measure the temperature so this is something that we use temperature sensor and humidity sensor for chemistry glasses and most of the sensor that you use with the Arduino is also work on the base lab and if something if you find a sensor that not compatible the firmware is open so you can actually write a book in yourself yes this is a little bit about the software stack of the device it is a Python library we have a desktop app and also the Android as I mentioned earlier all of these technology set you can find it on the GitHub or for Asia and the firmware is also available there if you want to check it out and this is a little bit more about the specification of the device and for general oscilloscope and two million sample per second and trail beef of four meter with the programmable gain and it also have 12 bit programmable voltage sources sources and you can see the logic analyzer for make a hurt and a few other things they also have the capability to measure capacitance I think it's a distance way from generators this is a little bit more specific about this particular instrument I think this is already and BS lab also has several trail bit analog inputs with function as a four meters this I mentioned earlier and if you are interested oh this is the one the voltage and the current source up to minus in plus five fourth where they three three different controllers now a little bit about the production of the device and we produce this in China in sunshine and we also work with the frau hofer Institute in Germany to produce this device two months ago we start the first batch and we produce 1000 of those and this is some of the picture of what happened in China when you when we meet the producer so I'm just gonna I did not go there but my colleague when they unfortunately cannot be here today to explain so I speak on his behalf so I wish a little bit about the lesson learned from China if you ever want to go to sunshine and do some kind of manufacturer for your for your product so if you when you find only bad by the endless of supplier and if you want to produce something they always ask you for the bomb I guess everyone he's already know the views of material and it took us a lot of time to to decide this document and when that you have different components that you want to to make the device so the supplier will give you different supplier give a lot of different code so sometimes even a small component the price different is really big and if you don't speak Chinese you it's very difficult to find out why it should be different in the price and they told us that if you order the past from the views of the truth it's also have an impact on the price to order and then for instance if you plan to draw out the product in January in February some of the common and because the person who assemble the product actually do not have the component themselves they have to order from another supplier so you need to to plan with them in advance sometimes some common and only come like five or four months later or if you want to come in and try to weigh the next month the price could be four or five times more expensive and then they also recommend that you use something that called the manufacturer component anyone knows what is remanufactured component yes yes exactly so it is somebody order and then return and then the order again I think in the yes they call refurbished something that yeah refurbished so in China the producer we call it remanufactured yeah and then another thing that we experienced in the myro USB header does not fit into the PCB and we have to you know we order only 1000 the China 1000 device but every single device we need to have a person there to test everything so it's really a lot of work if you just order online and you don't have anyone actually leave in China's and check every single thing it could be quite costly to produce something because you're not sure what are the percent of the device that could workable at the end and then so because my colleague is there so we find out as several female being hit us were not so distraught so we have to ask them to do is again and it's also it takes a lot of effort and also BS lab data work due to reflash problem or some faulty of the parts so right now for the first 1000 we test everything one by one yeah but we learn recently there is a hotel there is a better way to test the mass production product if you look for banh mi huang test mass production you will see a very good article that he explained everything about testing so for the next batch of production we're gonna follow this guy to this guy that he outlined there and we work very closely to the to the producer some producer they don't have the test how do you say the test case so the automatic test so but it depends so if you want to go to somebody very professional they might have it but because you're this boy cuts customized so they need to also customize another board for you to test the entire device so it took a lot of time to convince them and hopefully for the next one we can have the automatic test case for this is it a picture just a full g-park that they can there yes so and a few other things that we learn don't always go for the cheapest option and because it might have some problem and but if some component that you think they're not so crucial to do the function of the device there is Chinese branded component that you can replace instead of some well-known component and before you go to China please take a look at the national holiday for instance right now is public holiday so they're gonna have 10 days off and if you decided that you go there that time you're not gonna not gonna be able to meet anyone and again so we did not learn for the extra charge of production for instance when they sold how do I say this so even though you give them the bill of material already in the beginning and everything agree upon the size of the agreement later on they will say that okay so because it a little bit more complicated if you want to change a little bit so so during the divide the wall we decided okay so maybe this connector we move it a little bit on the left hand side so that we have small space for other pin and because it's slightly different than what we agreed in the beginning they said that they need to charge us extra for this yeah so the best could be to have one or two already that test and then after after the side of contract but whenever you want to change the bomb there will be an extra cost involved what next with what next with the pocket sign lab we actually been distributed to school in Singapore and India it's now being pilot in Dunman High School and ITE in Singapore for for the student and what is missing right now when we work together with the teachers on more tutorial and we also have our developer to go out and give workshop to show people actually how to work with the device if you do have the knowledge that you are the developer and hobby is it easy for you but for the student and needs more detailed guides and tutorials to have them getting starting with and so the reason why we are here today because we hope to get feedback of you I believe that you all here have more knowledge than me and also expert in the field while you are here in this different hardware room so we hope that you can check out the device and look at the technology stack and have to give advice for us how we can make it better so I will call it to make this device portable and more affordable for wider population in Asia and everywhere so if you have that we have a lot of young students to learn electronics everything that we do available on the github of false Asia and the community demand communication channel of this project is on github so if you go you go there they always like people on the channel who can answer questions and another thing that we're looking into right now so we need a lot of help to improve the desktop application the Android is working well because a lot of young people in India and everywhere they like to work on Android but the desktop is a little bit slow we have an upgrade to so we wanted to upgrade to Python 3.7 a lot of outdated dependency right now so for me I try to install on my laptop but it took me I think one day or so in order to make it working on my but it doesn't mean that it will take one day for everyone at the moment we do not support iOS phone we only have Android but it all we also hope that we be able to have it on iOS we'll decided to work on this but at one point we would be we realize that it's really tricky because Apple really tried to restrict the device that can connect it to to their phone and at the moment we have many people from from Japan and also from India from Germany we got actually a lot of order in Germany that test the device we did not have so good review the people said that okay so it's not there's something that not working but compared to a for this 55 euro and compared to something like 400 or something it's a lot would a lot of work so this is not the best divide but we try whatever we can so if you make any experiment and and you have any knowledge would we really appreciate if you can share your videos or document online with us and have to conduct workshop with pocket sign lab we distribute this right now in in Germany is if you go to the pocket sign lab talk I don't you can order anywhere in Europe and Singapore we also have distribution partner in Japan which is switch sign and and in China we sell with assist to studio and how about so we are available almost many major places the board right now doesn't come with a casing but the casing can be printed out easily with the 3d printer or laser cutter and the design the schematic of the of the casing also available online if you if just if you just want to to make the casing yourself and we also talk to one partner in China to convince them that they can bring the casing they don't produce the board because for a lot of producer at in China this is only like two cheap for them so if they do it again the same thing even though everything open if you want to produce you can also do it yourself but it's the price they don't see a profit into doing this yeah so we have a few left at the false Asia stand on K building if you're interested to get one of those as I mentioned already these are our distribution channels and we talking with our friend in Russia Vietnam India and Thailand so we also want to distribute them in these different places so the trends about we have a good network of people everywhere and who want to support us to do this out to to the market I forgot to mention if the cheap on the device either my real cheap big 24 and a lot of people came to our wood and said okay so this is not open the reason the project start about three years ago at that time it was the only option available for us and the person who started the project only choose this to work on now if we want to change it again have to work on different commonest it's more tricky for us but for the next version we hope to we talk with and and have to be able to to use the open chip instead it's also already come with the Wi-Fi and Bluetooth module but it's not just soda the reason why it's not there yet some of the distributor they do not agree to have something with the Wi-Fi module already so if you want it you can so this yourself at home okay and this is the end of my presentation in in March there will be a gathering of false Asia contributors from everywhere we also have a lot of visitor coming from Europe we have one event similar to to post them but it happened in Singapore March 14 to 17 will be our 10th anniversary if you happen to be there or if you want to come and connect with Asian community please join us and all the information can be found on the BS Lab.io we are on lean in GitHub and you can easily find it anywhere that's it and I'm sorry because of my accent maybe it's people difficulty to understand me but only try to this week as clear as I can thank you very much for your attention