PneuMission’s vision is to create competitive advantage for its customers. By exploiting the potential of motion and fluid control technologies, PneuMission engineers apply their dedicated skill... (3355 more chars)
I was about to solder the PCB of the driving circuit when I realize that the transistors we bought do not have the correct corresponding polarity designed in my PCB. The transistor in my circuit has t... (424 more chars)
Today, due to the previous design flaw, I need to redesign the driver circuit for controlling the heating elements for three emoticons. I came up with a new design, but for simplicity, I didn't consid... (203 more chars)
After 2 weeks' email and phone communication, I finally get this guy called Art from Marktek to send us the samples of the conductive yarn they provide. Hopefully it could take slightly shorter time. ... (202 more chars)
I did a quick test to obtain a rough measurement of the total power consumption of the current input circuit. The QTC sheet when fully pressed will have 0.5mA passing through, this result match the d... (720 more chars)
A box is not what we wanted for our real input device. The objective was a nice and cute portable doll. Hence after we had tested out the whole input system, we start searching for the doll to make o... (910 more chars)
Right after we finish testing the QTC material, we integrated the sensor into our input circuitries. Since QTC is a new material and its performance is not quite stable, we decided to use a flat surf... (1025 more chars)
It has been a while since I stop updating my blog mainly because of the final exam. Now it makes sense to briefly summarize all the development I have done so far. The first thing is the QTC sh... (1748 more chars)
Finally I managed to reach the two companies which are selling conductive yarns. I called them up and found Marktek has samples of conductive yarn that has a resistivity of 0.5ohm/cm. This is pretty n... (330 more chars)
Previously I had quite some problem in finding enough vendors that have website as well as proper data sheet for the conductive yarn they sell. I just discovered if I search for "datasheet conductive... (776 more chars)
I did a rough calculation of the resistance of the wire if it is going to be put in series which should be around 0.4ohm/cm. I got this when I estimate one mm for each conductive thread and 2mm of se... (1208 more chars)
I was looking at the whole piece of cloth I printed yesterday. And the color is really not nice, I doubt the main reason is because the ink we bought is not transparent and difficult to mix with the r... (702 more chars)
(may 02) In order to come up with some "prototype" for ISWC, I used the same method to heat up the cloth as Roshan did for the heating element. The two heating methods we found are the nichrome wire a... (2148 more chars)
EE2007 doesn't seem to left to much impression to me, and it proved that when I designed the system without considering the serially input and output. However, I found an entry on Howstuffworks (http:... (447 more chars)
April 8th - System Control consideration For the initial design of the control system, there are several points to consider about to choose the uc that could meet the requirements: 1. Whether to co... (1352 more chars)
I knew I had to implement a asynchronous method call to send emails. Instead of sending emails when an email criteria matches an audit log, the emails get created and queued up in a table in the data... (231 more chars)
Friday, 23rd March 2007: I and Faisel finish the first prototype for the input device. It's not really a prototype... in fact it is just for testing the sensor function... however sensor is the main ... (728 more chars)
25, Feb, 7th week of semester II. On week 1 of this semester, I talked to Miss Liu Wei and cleared my doubts on the project. We decided that I focus on realizing some of ARTookKit Plus' features in ... (4014 more chars)
Something queer to share. My paper calculations for drawing and movements were initially all inverted because JAVA GUI's cartesian space is ^x vs -^y. To correct this is to simply invert the sign of ... (94 more chars)
Have created the Grapical User Interface for the the sound to be implemented on. Barriers were learning to do floating point calculations, rotation calculations, creation of the avatars on the canv... (950 more chars)
Week 9 of Semester 2 (originally posted on 17 th of March) 12 th and 13 th of March 2007 Due to the midterm tests of one of my other modules, I had to spend the first two days of this week ... (6371 more chars)
Friday 16th March,2007: No productive works... I came to the lab and had a small chat with Faisel. We decided to wait for the QTC package before carry on with the testing since the bluetooth and PIC ... (726 more chars)
Monday 12th March, 2007: I had a quick discussion with Faisel about the op amp circuit. We decided to try without using the op amp circuit since the previous op-amp configuration might not necessary ... (1004 more chars)
March 15th 2007 Ordering the things you wanted for your project is not as simple as I thought. For the past few days I have been trying to make calls and sending emails to the B&H color change as I... (1108 more chars)
Using 'extends Canvas' in the java lcdui package to draw the avatars and spaces. For now, am using static addressing of the canvas sheet of 320x240 screen. There are three modes of the avatar position... (672 more chars)
March 13th 2007 Yesterday I called another company called Jetrion for conductive ink. This company is actually Precisia which is the one mentioned a lot in news but website not available. They quote... (346 more chars)
March 13th 2007 I have been looking for textile printing companies for days. The difficult thing is a lot this type of companies in singapore do not have a website, and I didn't find any information... (906 more chars)
Monday 5 th March 2007 I had originally intended to test out the QTC sensor’s evaluation kit to gain a better feel of the sensor’s operation before starting with what will be the l... (1676 more chars)
11th March, Sunday: stay in the lab until 11pm... in fact i forgot the time...i never wanted to stay that late. Anyway I managed to finish the PCB layout for the input circuit. The pcb size is 7cmx7c... (322 more chars)
10 March, Saturday : I went to the lab in the morning and tried to fix the schematic I did the day before. By noon i finished the new schematic but there was a few errors when i tried to update the P... (322 more chars)
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