User:Amirreza Saharkhiz/enes100/My Third Work

Write problem/project Goal
What is your wording of the overall problem/project goal?

The major problem is related to the gimbal motion, the ring and solid circle can't turn so smoothly. My goal is changing attachments of the gimbal and with one hit gimbal can turn constantly.

My First Task
What are you going to do for the team this first weekend?

Making gimbal with the smooth rotation and then test the two axes of gimbal rotation for helicopter motion.

Summary of actual work over first weekend
How is what you did different than what you planned?

I wanted to change attachments of the gimbal on the base for rotating smoothly and I wanted put it fan instead of wood stick for attachment.

Week1 Narrative
Tell a detailed story describing what you did for your team over the weekend.

Last week I built a gimbal that attached on the base with wood stick, and when gimbal was rotating the motion of gimbal was wove ling for this reason I wanted to change attachments. I needed some stuff that the tail of object can fix in the hole and also the head of object can turn with out going up and down in the hole. I thought fan is the best option that used in a computer but in a smaller size. The goal is using for fan for attachment, two of them that attached on the inner circle for holding a solid circle and two of them that attached on the base for holding gimbal. I found a fan that i needed to recover it first. Two fan was attached together in a hard plastic cover, the goal is to take fan apart from each other. First with screwdriver I take off first cover was attached to the solid frame with pin. For breaking a solid frame I used pliers and then I tried to fold hard plastic and it causes to breaking the frame. I broke the frame from angle and then I did same procedure for removing completely the frame but because the distance between frame and fan was so small sometimes I had to use screwdrivers for breaking. After I removed the frame around the fan there was one hole in the middle of frame for wires and also I needed to break it. The next step is taking apart of two fans from each other. At first I thought is impossible but after observing the fan I found each fan has a separate orbit with the other one. First I used screwdriver to make a gap between two orbit and I put the screwdriver between gap and I took of first fan. The other fan has a piece of plastic like a pipe shape and also one washer was attached on it. I used pliers for removing washer from pipe and then I used pliers to pullout the pipe, that was so firm. separating two fan from each other with screwdriver can damage to the fan's board but I don't need them. for the next step I cut the wires from socket to make a two fan completely separate. The last step was removing the blade from fan, I used small screwdriver for that, after removing I found a surprising thing. There is a small magnetic around a blade and it is for holding a blade when it is turning and because the friction between the blade and motor is low, fan can turn smoothly. After taking a part of fan, the fan can't turn smoothly same as before and also it has wove ling motion when its turning. I found out this choice doesn't work, I found a miro in a laser printer that can turn so smoothly. First I needed to remove the miro on the board because for attaching a solid circle to the ring, I don't have enough room. Cutting the board was so difficult because the board metal was hard and also i couldn't hold it with a clamp finally I cut it with a metal saw. The next step is, making holes on the columns bigger to attach the miro on the base. Because the tail of miro is also turning I need to attach the miro on the columns with the glue and same procedure for attaching a solid circle to the ring

My Second Task
Record what you are planning on doing for the team during the second weekend.

My plan is, attaching the gimbal with the miro for rotating more smoothly.

Summary of actual work over second weekend
How is what you did different than what you planned?

I used a new attachment for siping a solid circle in a ring so smoothly.

Week2 Narrative
Tell a detailed story describing what you did for your team over the weekend.

After I found a fan it's not a good choice for attachment I used a Miro for attachment. Each Miro was attached on the board and because I don't have enough room between a solid circle and ring and for this reason I needed to cut a board. I used a metal saw for cutting but because a Miro can turn, I couldn't hold it with clamp and the other problem was, board metal was hard.Finally I cut the board but because in the edge of Miro there was magnetic, It attracted some swarf of iron and causes to friction. I had to remove the swarf from magnetic fir this reason I used small flat screw drivers with the other magnetic for removing them. After cutting I needed to attach the Miro on the ring, I cut the cardboard with the cutter and I made wide hole on it then I used hot glue for attachment. I used hot glue around and under the Miro for attaching it on the rig. I needed to attach the other Miro in front of the attached one. for this reason I used ruler and I found the point on the other side of ring. I did same procedure as before for attachment. After that I needed to attach the solid circle to the ring but because those Miroes are not same the distance between ring and solid circle are not equal from each side. I measured the distance and I used piece of cardboard between solid circle and miroes for attachment. I folded cardboard 3 layers to make it enough taller for attachment I used hot glue in each times for holding the cardboard and I made a small hole on the cardboard with drill because the tip of Miro has a small solid circle then I attached one piece of cardboard to the solid circle and i used ruler for attaching the other one in front of the old one and i used hot glue for this work. after all I attached a solid circle to the the ring with hot glue. I used more hot glue around and back of each miro for holding it and know the solid circle can spin in the ring so smoothly. In the old version I used wood stick for attachments but because the friction between cardboard and wood stick was high, the solid circle can not turn freely in the ring. I needed to attach a gimbal on the base and for this reason I used drill to make holes on the vertical columns a little bigger for putting a miro in it. Fortunately the distance between two vertical columns were appropriate. After I made  holes bigger I poured some hot glue in the holes then I put the miro and I put the hot glue around the each miroes. Because those miroes are not same and one of them is bigger than the other one on the ring and the mass of bigger one is greater than smaller one for gravity force the gimbe can not be balanced. I needed to find a solution of that maybe I needed to attach gimbal to the columns unsymmetrical to keep balance. The major reason for unbalancing is a gravity force and I think if I put the gimbal on the base unsymmetrical I can overcome to gravity force. [video of new attachment], Another problem is a solid circle it's not exact in a center of ring and for this reason the orbit of a solid circle is unsymmetrical and it causes some friction to prevent a spin of circle so smoothly.

My Third task
Record what you are planning on doing for the team during the third weekend.

I plan to keep balancing gimbal on the base and also it could spin so smoothly on the base.

Summary of actual work over third weekend
How is what you did different than what you planned?

I wanted to attach gimbal on the base and it can spin around two axis freely.

Week3 Narrative
Tell a detailed story describing what you did for your team over the weekend. Finally after 3 weeks work on the gimbal and redesigning attachments I made a gimbal with cardboard that can spin around two axes so smoothly. In the final design I tried reduce friction as much as I could for sniping freely. Gimbal would better if i had better first material. materials that i used in gimbal are not functional for this reason gimbal has some problems.[video of gimbal motion]

My Fourth task
''Record what you are planning on doing for the team during the final weekend of project work

I plan to attach arduino board on the solid circle.

Summary of actual work over fourth weekend
How is what you did different than what you planned?

Week4 Narrative
Tell a detailed story describing what you did for your team over the weekend.

Complete Team Page
Helicopter Project, part 3