Lab 1
Progress Report Questions [1]:
The motors were operating very smoothly without issue. There was no hesitation when the motor was meant to start turning and there was no resistance in the motor, even at low speeds.
Arduino Function Calls:
- celerate(m, p1, p2, t) – Accelerates or decelerates motor(s) m from start speed (%) p1 to end speed (%) p2 over a duration of t seconds
- motorSpeed(m, p) – Initializes motor(s) m at percent power (p)
- goFor(t) – Run the motor(s) at their initialized state for t seconds
- brake(m) – Brakes motor(s) m. Does not brake the AEV, just stops motors from spinning
- reverse(m)- Reverses the polarity of motor(s) m
- goToRelativePosition(n)- Continues the previous command for n marks from the vehicle’s current position. n can be positive or negative, with positive meaning the vehicle is moving forward, negative meaning the vehicle is moving backward
- goToAbsolutePosition(n)- Continues the previous command for n marks relative to the overall starting position of the AEV
Lab 2
Progress Report Questions [1]:
The commands used in this lab and their abilities to impact the motion of the AEV must be considered when coding the arduino. For example, the brake command will not stop the motion of the AEV immediately. Additionally, it takes time for the AEV to get up to the necessary speed, and there may be a reaction time between when the code runs and when the AEV actually completes the motion. The only thing that this will change about the coding of the arduino is that the exact commands may need to be adjusted to account for the time it takes the arduino to do things. Simple trials will be useful to determine the scope and speed at which the commands are implemented.
The function of the reflectance sensors is to determine the direction that the AEV is travelling in and measure the distance (described in marks) that it goes. The calibration of these must be aligned with the calibration of the code so that the vehicle goes in the desired direction as dictated by the code. The reflectance sensors measure how many times the wheels on top of the AEV turn.
Lab 3 [1]
Data was unable to be collected during the lab period due to broken cables. The reflectance sensors were not working for the entire lab, so the team could not get the AEV on the track. Additionally, a lab day was lost due to a snow day, so the team was unable to collect any data relating to the AEV’s track performance. The team decided to shift focus to getting the reflectance sensors to work, so that subsequent data and performances can be taken and recorded.
Lab 4 [1]
Katelyn’s Sketch features a long and balanced base that distributes weight evenly. This feature allows the AEV to remain balanced and stable while travelling and carrying passengers. This design is motivated by its simplicity and functionality. It requires few parts, so it is cost effective and easy to recreate. However, the ability of the design to run is not compromised and the functionality is high. The ease of construction and clarity of design will aid in completion of the MCR. The research method, completed by reading all AEV document was used.
Jackson’s sketch features an aerodynamic design and a unique build. It is motivated by the lack of energy it will take to run and how it will easily cut through the air. This design allows for easy completion of the lab tasks as it is lightweight and smooth. Nothing will specifically aid in MCR completion. The construction technique was used in creation of this design, and its unique shape will make it marketable.
Hannah’s sketch features a low cost of materials and basic construction technique. Its lightweight design will help the AEV to complete its tasks as it is not as impacted by gravity. It is a basic design that is easy to follow and recreate. Due to its low cost, it can be mass produced. The forward facing wheel will help with completion of the MCR. The research method was used, by reading the full lab manual and examining what other teams had done. The forward based wheel will be helpful in completing the MCR.
Jamie’s sketch features a wide base with an aerodynamic design. This AEV can cut through the air while remaining stable. Jamie was motivated by the strength of this design and its ability to be functional and stylish. This design is the only one with an angled base, and this will allow for easier completion of the MCR. The drawing technique was used to visualize the design and promote understanding of the shape.
The created team sketch features an aerodynamic and lightweight design that is motivated by its functionality and style. It cuts through the air and uses minimal energy to do so. It glides easily and is easy to recreate. Its simplicity will aid in creation of the MCR and it is very cost effective, a constraint identified as very important by the team. The estimated cost will be decreased significantly if the grant proposal for the angled part of the base goes through and the part is obtained. This is the preliminary design of the team.