Final Day (17th and 25th October Update)

Today marked the last proper day of EIT as it is the day in which we are graded upon our work, most significantly our blogs as it is essentially all of our evidence for what we’ve done throughout this whole year. As the entire project boiled down to four aspects, the modeling and construction of the drone, the construction of the transmitter, the coding of both the drone and the transmitter and the blog entries, I was only able to complete around 3 of the 4 aspects, the one left out being the coding. Due to my double absence from EIT due to the university open day trips, I had a fair amount to catching up to do alongside being slightly clueless on what and/or how to do such things but I was able to pull finger and get stuff done despite the glaring design flaws that I was so oblivious to. Although I was able to load a sample code to the transmitter last week, It was done by some reworking around the soldering as when connecting it to the computer via USB, a power surge error message would be displayed. I had some help by Steve, our tutor in the final re solders as I would’ve just made matters worse. Nonetheless, I was hoping to get some of the code working in the drone today but we set part to the airfield down down by the Centennial Marine Dr to fly our drones. I was mostly a bystander for the duration of our time being but helped Clark, a fellow classmate in basic things such as holding stuff and filming his attempts at flying his drone. When we got back, with the time left, coding wasn’t really and option so I set out to make my blog as flashy as possible in order to attain a high grade. This was done primarily through the “Custom CSS” section of the “Appearance” tab by which I thought that I would’ve had to copy/write my own code but an eye symbol revealed my blog in an inspect element style where I could select aspects and change text colours, background colours, borders etc. I mostly aimed at adding a background image to blog, borders around text and images inorder to suffice for the poor visibility of the image. I think the final product looks fairly clean with the exception of some aspects being linked to another that I didn’t want such as the “ARYANSH CHAUHAN” and quote text having a border. Despite that, today was a satisfying conclusion to the drone project.

Below is the CSS code that I used via the “Inspect element” type feature to make changes to the layout of my blog.

content.site-content {

#content.site-content {
background-image: url(“http://level3.infotech.ac.nz/chauha4/wp-content/uploads/sites/54/2019/10/pcb-e1571963244179.jpg”);
}


.page-title {
background-color: #000000;
border-color: #ffffff;
border-width: 5px;
border-style: solid;
}


p {
background-color: #000000;
border-width: 5px;
border-color: #ffffff;
border-style: solid;
}


.entry-meta {
border-color: #ffffff;
background-color: #000000;
border-width: 5px;
border-style: solid;
}


.entry-date.published {
color: #ffffff;
}


.entry-title {
background-color: #000000;
border-width: 5px;
border-style: solid;
border-color: #ffffff;
}


.wp-image-199 {
background-color: #000000;
border-style: solid;
border-width: 5px;
}


.wp-image-201 {
border-width: 5px;
border-style: solid;
border-color: #ffffff;
}


.wp-image-202 {
border-width: 5px;
border-style: solid;
border-color: #ffffff;
}


.wp-image-204 {
border-width: 5px;
border-style: solid;
border-color: #ffffff;
}


img {
border-width: 5px;
border-style: solid;
border-color: #ffffff;
}


figcaption {
border-width: 5px;
border-style: solid;
border-color: #000000;
background-color: #ffffff;
color: #ffffff;
font-size: 100px;
}

recent-posts-2.widget.widget_recent_entries {

border-color: #ffffff;
background-color: #000000;
border-width: 5px;
border-style: solid;
}

archives-2.widget.widget_archive {

background-color: #000000;
border-color: #ffffff;
border-width: 5px;
border-style: solid;
}

categories-2.widget.widget_categories {

background-color: #000000;
border-style: solid;
border-width: 5px;
border-color: #ffffff;
}

meta-2.widget.widget_meta {

background-color: #000000;
border-color: #ffffff;
border-width: 5px;
border-style: solid;
}

search-form-1.search-field {

background-color: #000000;
border-width: 5px;
border-style: solid;
border-color: #ffffff;
}
.page-numbers {
background-color: #000000;
border-color: #ffffff;
border-width: 5px;
border-style: solid;
}
.wp-block-code {
background-color: #ffffff;
border-color: #ffffff;
color: #ffffff;
border-width: 5px;
border-style: solid;
}

Holidays Pt.3 (October 2nd Update)

Today was a fairly successful day as I was able to complete my transmitter for my drone but the process wasn’t all easy as I’ve had troubles in getting the hang of soldering by which it was present today as well. The margin for error on the PCB is rather low so there were several attempts in which the solder would slightly be outside its area and thus I had to do trial and error until I got it right. The joysticks were an issue itself as the holes that I had drilled for them were on the left side only as that was the area that I felt were free or disturbing any connections on the board but due to the imbalance, I had to painstakingly hold the joystick up whilst screwing it on the other side. After several attempts, it was complete but came at an expense of the time present today. Everything else such as the wire soldering and battery holder was relatively straightforward but it turned out some of my solders from a while ago were messy and some needed a resolder so that was a bit of a hassle as I usually ended up making it worse but nonetheless, It was done. Overall, the transmitter was completed but it took more time than it should have.

Transmitter just after the soldering and screwing of the two joysticks
Back view of the transmitter with the battery bracket and joystick “standoffs”. The reason for why I choose the standoffs was simply a lack of available nuts thus I used what I was left.
After the soldering of the wires and the battery’s connections (Front View)
After the soldering of the wires and the battery;’s connections (Back View)

After the soldering of the wires and the battery’s connections

Holidays Pt.2 (October 1st Update)

Today marks the second day of the drone project and it was meant to be an ambitious one as I had planned to finish the construction of my drone today and start working on the transmitter but I was only able finalize the design today, however, I am contempt with that nonetheless. There was fairly minimal problem solving involved today as I just worked on the top layer of the drone which included the ultrasonic sensor brackets, the Arduino Nano and the black antenna that is placed inside its plastic casing. It was relatively straightforward however the holes that I drilled out for the Nano were quite messy and made positioning annoying as they had to be in a specific place in order for the majority of the screws to work. The black antenna and its casing weren’t too hard either as it was a simple case of cable ties and screws but its positioning replaced that of a bracket that I had reserved but that didn’t really matter as I already have 4 sensors present. One instance that did require somewhat of problem-solving was the ground and VCC connections from the PDB to the Nano as they required the soldering of pins to the nano as a way of connection which was pretty straightforward. Overall, today was a successful day without any major issues but one that was slightly underwhelming.

Top-down view of the top layer
Prior to the placement of components to the top layer
After placement
Side view of the drone

Holidays Pt.1 (September 30th Update)

Today marks the first of the remaining five days that we have for our drone project in terms of grades as on Friday the 4th, a NCEA mark has to be sent of either Not Achieved, Achieved, Merit or Excellence. I am pretty confident that if I were to use these five remaining days. I could be able to finish the construction, the transmitter and somewhat of the coding by which today was fairly successful. However, today required a fair amount of problem solving and changes as my idea for the yellow component of the PDB turned out to be a complete waste of time as even though it was able to fit through the hole, the distance between it and the battery packs cable was too great, making it useless. I then spent a fair amount of time thinking on where to place this component and settled for the bottom left of the second layer as the connection wouldn’t be an issue to and fro the battery and it was the only space that wouldn’t too much with the standoff holes. The position however, did pose an issue for placing the battery as it the holes would block it and make it unstable by which I opted for only two screws connecting the PDB to the layer in a horizontal manner as it would still be secure. Another thing that required changing was the positioning of my motor as I got them wrong and had to swap them over which wasn’t that big of an issue. In terms of soldering, I was able to solder the motors to the speed converters and thus to the PDB which also wasn’t as difficult as I anticipated as my soldering skills were fairly weak on my first try and still are somewhat. Overall, today was a lengthy yet productive day that resulted in the majority of my drone constructed, despite the different ideas and viewpoints that I had to approaching my messy design. Below is some photographic evidence

Before today’s progress
Soldering of the motors to the PDB via the Electronic Speed Converters
Bottom to Middle layer completed with the components
General picture of the drone after today’s work

September 27th Update

Today was entirely spent on the construction of the drone but it was as easy ad straightforward as I thought it would be as today revealed a lot of design flaws and aspects that I overlooked as the PDB is supposed to connect to it’s yellow connection which in turn connects to the battery. As I didn’t think about this during my design on Fusion 360, I had to make a crude entry for the connector with the use of the power drill. Another aspect that was slightly difficult to do was the holes for the Arduino Nano as the component didn’t lie properly on my top board so when I marked the holes for drilling, they weren’t as perfect as they should’ve been thus required some extra drilling and making the holes more loose. I was able to get it to fit but the somewhat lack of standoffs lead to a crude solution. Here is some photographic evidence from today.

Sketch of the gap that was going to be drilled out
After the drilling process
The drone’s upmost layer
Drone’s middle layer and standoffs

September 20th Update

(This update is being posted on the 27th due to some issues with my blog password login as I thought it was one of my older passwords but then realized it was auto-generated from google)

This week was dedicated entirely to the construction of my drone as I was and currently am extremely behind on my project but it was not as streamline as I thought it would be. I was able to get the ultrasonic senor holes at the base sanded but was a vigorous 30 minutes of finger torture. Screwing the arm holes to the base was a kick to the face though as I didn’t spread the holes out far enough to which it resulted in the bottom hole being screwed in the opposite direction to just fit with the others (refer to the images below). Alongside this, the holes for the Power Distribution Board (PDB) were slightly off from what I expected and will have drill another 3 holes again. Below is some photographic evidence of today

Incorrect hole placement for the PDB
Lack of thought for the hole placement lead to them being extremely close to one another thus making screwing semi difficult.
This was an “solution” that I had for my holes but was not that great in practice.

September 13th Update

Today was a multifaceted choice on what to work on, the transmitter and its soldering or constructing the drone from the pieces to which I chose the drone as the majority of the class had competed their drone or were near completion whereas I had just gotten my parts printed. I was hoping to get a fair amount of the design constructed but due to the cutting of the parts, sanding was required as one of the arms sides were uneven and greater than the rest alongside the fact that nearly every part needed some form of sanding. One notable issue that occurred was the cut of my base body as the holes fro my ultrasonic sensor were ever so slightly smaller than the part itself to which I had to vigorously sand the holes until the part would fit. The holes haven’t been completely sanded but after that only the construction of the drone and making the components work within the frame is required.

Before Sanding (ft. Clark’s hand)
After Sanding
Cuts after sanding
The base of the drone’s holes for the ultrasonic sensor being just short for entry

September 6th Update

The past two weeks have been off of EIT due to my attendance at the Victoria University open day in Wellington (23rd August) and the Auckland University of Technology (AUT) open day (31st August) therefore I had a lot to catch up on. Prior to that, my drone design in Fusion 360 had been finalized with the tutors or so I thought as when Steve went to print it in, there were some issues with the placement of the renders. Some of the objects were a few millimeters displaced and the renders were so close to one another to the point where the machine would cut the parts together or simply chunks of the arms were assimilated into the bodies. I was able to resolve this issue quite easily but one thing that I initially had difficulty with was the soldering on the transmitter. Due to the small margin for error with the solder, I had to constantly remove and re-solder the connection points with the PCB and the components as my solders were to large. With the help of a classmate, I was able to somewhat understand the proper method of doing it. Overall, today was a fairly productive day however I was hoping to build the wooden drone today.

Final wooden render from the cutting machine
Front of the PCB (Printed Circuit Board)
Back of the PCB with the solders

Post Term 2 Holidays Update (July – 16th August)

After the holidays, It was time for our drone designs to be on their way of completion. I however was far behind my drone design and was skeptical of completion. However, the frantic rush of worries surrounding my completion were eradicated as I was quite comfortable able to get it done. A setback however was using Fusion 360 as my inexperience with the program led to some rather frustrating moments such as my constructed drone design being glued together therefore I was unable to make any further changes. I aimed to construct my drone in two manner, create the full design and then copy the individual components to another space that was wary of the dimension that the machine would need. Having completed my design last week, (9th Aug), I thought that I was finished and only needed to complete the manufacturing section of my design however, upon realization, my main body design was a near just fit for all the components which would have lead to a very dreadful design to work with. I changed my main body of 90mm long and 55mm wide to 120mm long by 80mm wide. I also had to reduce the length of my arms from 123 to 124mm to 105mm in order to work with the entire design. The holes however were the easiest part of the process to readjust as i just had to simply move them across or up/down.

Here is the original design that I thought was complete and the actual final design

Final Design
“Final Design” (Evident from the amount of free space on the left side rectangle.

28th June Update

This week I aimed to get my Fritzing PCB (Printed Circuit Board) completed to which it was completed (originally aimed at last week for completion) with little to no difficulty at all as it simply required me to reorder the automatic preset that that was given and figure out which wire aligned to which component and its connection.