Task 4: An Overdue Somewhat Short Summary

To begin with, I just wanted to say that I have been terrible at blogging. To be honest, I can't stand it. I won't shut up in person, but tell me to write what I have been doing and how I feel, and I draw a blank. Its hard to write experiences when I have spent the last 3 1/2 years learning how to write technical papers. Then I just got so far behind on my blogs that I knew I would have to set aside time to get caught up before I could blog on current topics, so here is my last huge blog post to catch up to where I am currently at. I promise to blog at least once a week here on out!

For my fourth project in this class, we were given a more open ended task that was basically making a smart surface that was also heliotropic (I honestly don't remember the exact parameters! Oops!)... however, this was easier said than done. To begin with, I was switched out of my group to a group with all boys! It was to make the group more diverse and I was all for it. And they had a lot of great ideas... the one idea we ran with was making a solar paneled building (or siding for a building) that during the day would collect solar energy and at night it would interact with people walking by. To make a LONG story short, when presenting our idea to the class, it was demolished! We were definitely not cut any slack as everyone ripped into the idea with no mercy! True, I am over exaggerating just a tad.. but that's what it felt like. I mean, I kind of new the idea was a tad crazy, even on a scaled down version we wanted to built, but I figured why not try it. Well, we were sent back to the drawing board, where I became stubborn and kind of mean in all honesty. This had nothing to do with my group members, I just felt like every idea that was thrown out was a art project, and I wanted to do something with a purpose. Plus, I was just having a bad week! Well after debating on ideas, our group finally agreed on a field of cubes that, when people walked by, would interact with them using LEDs. Now, we were just building one cube, but using digital project, we were going to demonstrate a field of cubes of a variety of sizes that would be placed on the Central Campus Diag so that it would force people to interact in a different way. During the day, the cubes would be more of an installation and would be great to look at and the sun would charge the batteries used to power the aurdinos inside the cube. At night, lights would go off as people walked by them. Below our some pictures (sorry about the quality, they were taken on my phone) of our original boards/idea.

Well, once we had our final idea, we decided the interaction with people walking through the cube would be to have the cube light up then fade away as the people walked on through the field, creating a trail of light behind them as they went. We decided to do this using infrared sensors that work using a yes or no response. However, this yes or no response that sensor receives only allowed an LED to turn on if a person was in front of the sensor and of if there wasn't movement after a certain amount of time (I found the code online in order to make that work). My group, however, really wanted the lights to fade, not all at once either, but across the side of the cube! This issue with that was that 1.) I was in a really bad mood that week and was being extra hard to work with and 2.) I was the one person suck with the coding and system work for these lights, which I stink at! So, after hours of working on this code and fighting with one of my team members specifically, I asked a friend in my MSE class for help (he is taking programing classes). And, sure enough, we got a working code! I had the base of the code right and he help me workout the details.. The video below shows the first time we got the sensorand lights to work!

So after that, I had to build four (well three if you don't count the one above) different circuits to put in our cube so that each side of the cube would like up with the infrared sensors. So, I spend HOURS finding the best resistors to use for the circuits (the ones that would allow the LEDs to be the brightest) and finding enough LEDs to use for each of the same color (we used six LEDs for each side for three of the sides and 12 smaller LEDs in parallel for one side). Once all that was done it was time to put the whole thing together as a group! The frame of the cube was cut and painted wood, and the sides of our cube were made out of acrylic that had different laser cut designs on each side that would pick up the light from the LEDs. Also, one side of our cube (the green side) was actullay powered using solar cells that charged the battery!! The other three sides we had to use normal batteries due to lack of solar panels. We spent hours the night before assembling everything, but all and all our project turned out great! And we had excellent digital project work to back up our prototype design. Below is a video of our final working cube, sorry the camera was so shaky!

Our group honestly click together the best during the final stage of putting the cube together! We had a lot of fun doing it and we all got along really well and it seemed like any tension in the group that had existed disappeared! I apologized for my grumpy and catty demeanor and two of the group member whole sent out an email to the group complaining how no one else was working on the project (which was not true!) definitely realized their mistake! So in the end I learned two things, first try not to let the stress and pressure of developing a more open ended project cause to much turbulence in the team. Productive disagreements are good, but try not to argue and let emotions get in the way, it only harms the team. Secondly, I learned that I cannot let me mood or personal life effect my behavior towards my teammates or the project. If I am in a bad mood before a meeting, that is no reason to argue about pointless facts, be short with teammates, or give up on something that seams hard before you have really even tried.

Heleotropic Project

At our next group meeting, we decided the we wanted our project to be programed to follow the sun, instead of tracking sunlight, in order to be more efficent. The reasoning behind this was that if we already know the suns travel path for everyday of the year (and every season) it would save more energy to just follow the known, never changing path of the sun than to program the machine to follow the light, which could become distracted by clouds and etc. We decided that we would cover all of the angles and distances that the machine needed to travel by putting tubes in two parallel planes where the top plane controlled movement in the y-axis direction and the bottom plane controlled the x-dircetion of movement. The two planes would move simultaneously to cover all of the angles needed. The next meeting we drew a diagram for the frame work and moving planes for our project and worked out all of the dimensions needed to build gears and that will allow us to reach all of our desired angles. Below shows our final sketch of our project.

After that meeting, we started building our final project by laser cutting acrylic to make the entire body, the frames. two planes, and the gears used to move the planes. The two flat planes where made by weaving metal wire through the acrylic frame so that the two planes had square grids on them, which were slightly misaligned. This was so that the tubes that would be collecting the sunlight could sit on the bottom grid and move freely. Our idea was that the tubes, for real use, would have fiber optic wires in them that would allow the collected sunlight to travel through the tubes and be focused onto a solar panel below. The wire mess second plane would allow for the wires to come out of the bottom of the tubes and the tubes would still be free moving. Images of the final built project are below. They show the top and bottom planes, the gear system with the servos used to move them attached, and the entire body of the project. The image quality is bad due to the fact that I took these on my phone.

Our group also made a Digital Project version of our idea, but enhanced the idea by making sure the tubes in the system never over shadowed each other. Meaning that as the tubes rotate and follow the sun, the tubes in the back row (farthest away from the sun) will actually be the tallest and the rows will decrease in height to make a flat plane that places the sun, thus eliminating shadows and optimizing light harvesting. Plus throughout the day the tubes will create a wave motion ontop of a building, or where ever the system is used. Our group wanted to use this system for urban projects, that's why we tried to bring a visual aspect to our project as well.

Third Class

For week three, we focused our class period on learning to use Digital Project, which is a 3D modeling program. This class was very interesting, though at some points moved a little to fast for me to keep up, but was very useful. Our professor also put tutorials online so that if we missed something in class we have a reference to go back to, which is extremely useful. We then were divided, once again, into new groups of six and were assigned to make another heliotropic design using the arduino boards and circuts, however, this time we needed to make it follow the sun and we also had to make a Digital Project version of our design. The physical arduino design has to be made up of three light collecting cells that follow the sun, while the Digital Project design had to be more of a full version of our physical project, they do not have to be exactly the same, the ardiuno prototype just has to be simliar to our final idea. We met in our groups after class and my group right away started tossing out ideas for our project. Our meeting went very well and we were all happy with our main ideas that we came up with and what direction we wanted to take our project.

Completing Homework 2: Both group meetings

So for our first group meeting, my entire group got together and for the first 10 to 15 minutes and made sure we were all on the same page of what we wanted to do for our project and how is was going to work. We decided to scrap our original idea completely and go with a ball socket idea where two servos were taped together and acted like a joint to cover the x-axis and y-axis, so that no matter were the light was, our design could follow it. We decided to build a triangular face to put the LDRs on and did one in each corner of the equilateral triangle. We soldered longer wires onto the LDRs so that the LDRs could be punched through the cardboard face and far away from the arduino and other circuits. Then, we attached the base of our project to the servo motors and then the servo motors to a box that contained all of the wires and circuits. We were having trouble getting our project to work, it would basically shake back and forth, like it was "seizing". We decided, for simplicity, to used two arduino boards and connect one LDR to one board and the other two to the other board. However, the system was still having problems and would not work properly, but would for a pattern in it's movement. We played around with the program multiple times, trying the most basic code, like the one showed in class, to complicated editions to that code to try to fix our problem, but nothing was working. So, we decided to call it a day and come back to our project the next day. The picture below just shows how much "fun" my group was having trying to get our project to work!


The first solution we tried at our next meeting was to add another LDR in the "middle" of our face. However, we still were getting a repeating patter from the motors that did not follow the light. After playing with every LDR to make sure they worked, all the motors and circuits, and the codes themselves, we realized that we had written our code to work with the computer by transferring values back and forth from the arduino to the computer and vice versa. The problem was that we forgot this when we were trying to get our machine to work and were unplugging both arduinos from the computer and just using the external plugs for power. So, once we used both the computer and the external power source, our project worked perfectly! Me and another team member stayed a little late after that meeting to try to put lights on our face but had no luck, seeing as it was extremely late and we no longer had the patience to work on it. We did, however, make the LDRs more centered in the middle of the face and closer together. We now were using four LDRs in the center of the face (like a diamond) where the top and bottom LDRs caused y-axis movement, while the left and right LDRs cause x-axis movement. Our project apparently (had to miss the demistration due to another class) worked extremely well and we were all decently happy with our final design. Though, if we had figured out our issues with our system earlier, we would have tried to make it more flashy by adding lights or etc. Below is a picture of our final project.

Second Day of Class

The second day of class was interesting. Some of us got to show off our arduino homework assignments (many of which I felt were much better than mine!) then we learned about heliotropic properties and systems, which was quite interesting. We also got to play around with our arduino systems to build different circuits that could, with use of a LDR, detect light and it's intensity, run a manually controlled motor, and could run a servo. Using these new circuits and arduino programs (which were prewriten) we were divided up into new groups and assigned a project that would be heliotropic; meaning it would find and follow light. I liked everyone in my new group, however, we had a bit of a communication problem. No one was really on the same page when we started building our final project because we didn't spend much time on the planning phase due to only having an hour or so to complete the whole project. We also had group members cutting each other off either to say something wouldn't work, to ask a question before the person was done talking, or to try to explain something before a group member was done asking a question. Our final class project worked to an extent (better than the other groups if I am remembering correctly) but it was not what all of us had in mind and still did not work well. We had tried to design it (indirectly) like a sun dial, that when the light was focus on a specific LDR in one of three quadrants, the servo would spin and arrow to point to where the light was at. It was a good idea and was different from what the other groups did but wasn't great. Once our assignment got extended to finish the project but the next class, we decided that at our first meeting we would all try to get on the same page for how we really wanted our project to work and to look and go from there.

ARDUINO!!!

I some how managed to not only program the aduino, but I managed not to break it or my computer as well! It was not as bad as I thought it would be, was easy once I figured out a couple of little things. It was fun though and it makes me excited for the rest of the class. The picture above is my cover for my LED lights and I have also posted a video of my final HW #1 assignment.

First day of class!

We had are first day of class on 9/11. We had a quick intro lecture and an explanation of the class and our task of the day. Once we got in our group, we quickly started coming up with ideas, however, we were not really writing down every idea that we had. We also were using a long piece of paper to write down some of our ideas, which was very difficult for everyone to read. Then, we were going idea by idea and doing pros and cons, kind of shooting down ideas as we went. Our professor came to talk to us and we decided that we were not going to do any cons for our new ideas, and we were going to write down an idea for every piece of material given to us to use. Also, instead of using the piece of paper, we wrote everything on the white board so that everyone could see. We all worked together and did pros and cons and decided that for our project we would make a funnel system that would filter sand into four different boxes, in hopefully the right proportions. The way the sand got into the funnel through the use of a sling-shot type contraption where we put a cup of sand in a rubber band. The rubber band was attached to a metal pole and then the cup of sand was shot into the funnel. My group worked very well together and had a great time working on the project. We laughed the entire time and joked around and were excited about our ideas. However, though we had fun, we managed to stay focused on the task and got what we wanted to achieve finished. All of the groups projects were impressive and I think everyone took away lessons about how to deal with the other students and I now have a better idea of how non-engineering students work, think, and see things. Next task, homework one!