FIRST STAGE: week one
The Automatic Trash Bin
Year Two Group Project, University of Liverpool, Electrical and Electronics Engineering Department.
The developments of this project were supervised by Dr. James Bradley
Haoran Cheng, Xuhui Gong, Shekhah Mobarak, A-ro Han
Week One; 31 January 2020
First stage
For the first working week a meeting was held prior to the
advisors meeting at Sydney jones library, a plan was set on what to do on the
laboratory day to be able to save time and evade wasting time on the actual
laboratory session. By this point the group roles have already been distributed amongst the
group members, consequently by the end of the meeting it was concluded that
Haoran and Xuhui are to mainly focus on developing the software and ensuring
that it is adaptable to the Raspberry Pi 4, Shekhah was tasked with creating a
suitable design for the Trash bin and create a demo before the construction of
the actual trash bin, the demo is to be constructed out of recycled cardboard
boxes.
Figure Six: Meeting at Sydney Jones
library
Afterwards a meeting was held with
the Supervisor to discuss the progress of the group and what the next step is in
order to successfully achieve the required results.
There was a concern that was to be
addressed during this week which is about the following point; the model that
was agreed upon previously has to be modified into a more suitable design to
which the trash bin would be able to reach its full potential. Hence, the
hardware team is expected to create demo designs out of cardboard and try to
test them to indicate what type of design is suitable for the trash bin.
The tasks assigned for this week were;
The tasks set for the following
week were;
Haoran Cheng, Xuhui Gong, Shekhah Mobarak, A-ro Han
Week One; 31 January 2020
First stage
For the first working week a meeting was held prior to the
advisors meeting at Sydney jones library, a plan was set on what to do on the
laboratory day to be able to save time and evade wasting time on the actual
laboratory session. By this point the group roles have already been distributed amongst the
group members, consequently by the end of the meeting it was concluded that
Haoran and Xuhui are to mainly focus on developing the software and ensuring
that it is adaptable to the Raspberry Pi 4, Shekhah was tasked with creating a
suitable design for the Trash bin and create a demo before the construction of
the actual trash bin, the demo is to be constructed out of recycled cardboard
boxes.
Figure Six: Meeting at Sydney Jones
library
Afterwards a meeting was held with
the Supervisor to discuss the progress of the group and what the next step is in
order to successfully achieve the required results.
There was a concern that was to be
addressed during this week which is about the following point; the model that
was agreed upon previously has to be modified into a more suitable design to
which the trash bin would be able to reach its full potential. Hence, the
hardware team is expected to create demo designs out of cardboard and try to
test them to indicate what type of design is suitable for the trash bin.
The tasks assigned for this week were;
- Create an alternative design for the trash bin
- Construct the design out of cardboard
- Develop the software
The tasks set for the following
week were;
- To start constructing the trash bin out of a suitable durable
material
Figure Seven: Supervisor meeting
one log
Laboratory session
At the beginning of the laboratory
session the group checked if all of the components ordered have arrived.
Afterwards the group decided to divide
the bench into software area and hardware area to ensure that all of the team
would focus on completing their part efficiently and in an organized manner.
Th
preliminary code was then tested by the software team to check if it
operational, after checking the code the Raspberry Pi 4 was connected to the circuit
chip by utilized electronic jumpers as shown below in figure 8.
Figure Eight: Electronic jumper
wires [1*]
Next the micro servo motor was
connected to the circuit.
Figure Nine: Micro servo motor [2*]
In addition, a camera and motion
sensors were connected and adjusted along with the other components in the
circuit. After connecting all components mentioned previously they were all
tested with the code. The code was operating as expected.
Figure Ten: Part of the software development
As for the hardware a mini
structure was created by using recycled cardboard boxes. Based on several
alterations to the design the group agreed to go with a simple design that
would meet all of the features required for the automatic trash bin. the group
had agreed that the trash bin had to be rectangular and separated both vertically
and horizontally. For instance, for the interior section is divided into three
horizontal levels, the first level is where the user is to throw in the trash,
the next level is where the machine is to separate the trash, and finally the
final level is where the trash is to descend. In addition, the final part is divided
into four separate sections for an illustration please see figure 11 below.
Figure Eleven: Design of the trash
bin
References
[1*] Uk.rs, 2020. MIKROE-511 | MIKROE-511, 10 piece
Breadboard Jumper Wire Kit | RS Components. [online]
Available at: https://uk.rs-online.com/web/p/breadboard-jumper-wire-kits/7916450?cm_mmc=UK-PLA-DS3A-_-google-_-PLA_UK_EN_PCB+Prototyping_Whoop-_-Breadboard+Jumper+Wire+Kits_Whoop-_-PRODUCT_GROUP&matchtype=&pla-477747351796&s_kwcid=AL!7457!3!413122813147!!!g!477747351796!&gclid=CjwKCAiA-vLyBRBWEiwAzOkGVGvvRHhTW_hAPXYCivc3vnYhsqbvv6-x5eXrFGG-0WaAG1Rzrh-EARoCMlsQAvD_BwE&gclsrc=aw.ds
[2*] Electronation, (2020). Servo Motor SG90 -
Electronation Pakistan. [online] Available at:
https://electronation.pk/product/servo-motor-sg90/
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