Difference between revisions of "S24: Team Falcons"

From Embedded Systems Learning Academy
Jump to: navigation, search
(→‎GPS Navigation)
(→‎GPS Navigation)
Line 420: Line 420:
 
=== GPS Navigation ===
 
=== GPS Navigation ===
 
For GPS navigation the angle difference between heading and bearing is calculated and motor turn commands are generated based on this. Heading gives the current position in angle with respect to north. Bearing gives the angle to destination with respect to north. The logic that worked for our hardware is given below:
 
For GPS navigation the angle difference between heading and bearing is calculated and motor turn commands are generated based on this. Heading gives the current position in angle with respect to north. Bearing gives the angle to destination with respect to north. The logic that worked for our hardware is given below:
 +
 +
{| style="margin-left: auto; margin-right: auto; border: none;"
 +
|-
 +
|
 +
{| class="wikitable"
 +
|+ Table 6. GPS Logic
 +
|-
 +
! Angle difference = bearing - heading
 +
! Turn Angle
 +
|-
 +
| 0 to 180
 +
| left
 +
|-
 +
| 180 to 360
 +
| right [angle = (360 - angle)]
 +
|-
 +
| -180 to 0
 +
| right
 +
|-
 +
| -360 to -180
 +
| left [angle = fabs(360 + angle)]
 +
 +
|}
 +
|}
  
 
=== Technical Challenges ===
 
=== Technical Challenges ===

Revision as of 00:50, 18 May 2024

Project Title

Falcons


Abstract

<2-3 sentence abstract>

Introduction

The project was divided into N modules:

  • Sensor ...
  • Motor..
  • ...
  • Android

Team Members & Responsibilities

<Team Picture>

Gitlab Project Link - [1]

<Provide ECU names and members responsible> <One member may participate in more than one ECU>

  • Sensor
    • Link to Gitlab user1
    • Link to Gitlab user2
  • Motor
    • Link to Gitlab user1
    • Link to Gitlab user2
  • Geographical
    • Link to Gitlab user1
    • Link to Gitlab user2
  • Communication Bridge Controller & LCD
    • Link to Gitlab user1
    • Link to Gitlab user2
  • Android Application
    • Link to Gitlab user1
    • Link to Gitlab user2
  • Testing Team
    • Link to Gitlab user1
    • Link to Gitlab user2


Schedule

Week# Start Date End Date Task Status
1 02/22/2024 02/26/2024
  • Literature survey- previous year project reports, hardware used, algorithms, challenges, advice to future students.
  • Ordered CAN transceivers.
 Completed
2 02/26/2024 03/10/2024
  • Familiarize with the busmaster tool
  • Basic CAN tx, rx with DBC encode, decode
  • Discuss power management system
  • Compare sensors, RC cars, bluetooth modules and other relevant hardware.
  • Create project wiki page
  • Create a project schedule and updated wiki page
 Completed
3 03/10/2024 03/12/2024
  • Create a block diagram for project
  • Finalize on roles
  • Finalize and order the list of selected components.
  • Create remote Git Lab repository
  • Establish a process for creating pull requests, code review and merging to master.
  • Discuss Android app design and development challenges
 Not completed
4 03/12/2024 03/19/2024
  • Write implementation for interfacing ultrasonic sensors with Sensor and Bridge Controller board along with Unit Tests
  • Write implementation for interfacing Bluetooth module with Sensor and Bridge Controller board along with Unit Tests
  • Write implementation for interfacing motor, steering and RPM module with Motor Controller board along with Unit Tests
  • Write implementation for interfacing GPS module with Geological Controller board along with Unit Tests
  • Write implementation for Interfacing magnetometer with Geological Controller board along with Unit Tests
  • Create dbc file for CAN communication
 Not completed
5 03/19/2024 03/26/2024
  • Bringup of ultrasonic sensors with SJ2 board-
    • Connect the sensor with the board using header connectors.
    • Check sensor functionality, obstacle detection.
    • Create initial draft for PCB design.
  • Bringup of bluetooth module with SJ2 board-
    • Connect the bluetooth module with the board using header connectors.
    • Check functionality, tx, rx, range.
    • Create initial draft for PCB design.
  • Bringup of motor controller with SJ2 board-
    • Disassemble the RC car, understand internal electrical connections, derive connections to control steering and drive the motor.
    • Control the steering and drive motor via SJ2 board.
    • Connect the encoder(RPM module) to the wheel and measure distance traveled.
    • Create initial draft for PCB design.
  • Bringup of GPS and Magnetometer module with SJ2 board-
    • Interface GPS module with SJ2 board and send data via CAN
    • Interface magnetometer with SJ2 board and send data via CAN
    • Create initial draft for PCB design.
  • Bring up of LCD with SJ2 board
    • Interface LCD with SJ2 board
    • Create initial draft for PCB design.
 Not completed
6 03/26/2024 04/02/2024
  • Bringup of entire system
    • Connect all the different modules together.
    • Validate CAN tx and rx among the modules.
    • Develop integration tests.
  • Create initial draft for PCB design.
  • Calculate power requirement and run battery load test.
 Not completed
7 04/02/2024 04/09/2024
  • Design and code initial draft of obstacle avoidance algorithm
  • Design and code initial draft of waypoint algorithm
  • Design and code initial draft of Android app
  • Finalize on power management
 Not completed
8 04/09/2024 04/16/2024
  • Prototype 1:
  • Integrate all HW with the custom designed PCB.
  • Validate initial draft of obstacle avoidance algorithm.
  • Validate initial draft of obstacle waypoint algorithm.
 Not completed
9 04/16/2024 04/23/2024
  • Prototype 2:
  • Release and validate obstacle avoidance version 2
  • Release and validate waypoint algorithm version 2
  • Fine tune sensors for accuracy
  • Outdoor testing
 Not completed
10 04/23/2024 04/30/2024
  • Prototype 3:
  • Release obstacle avoidance logic version 2
  • Release waypoint algorithm version 2
  • Outdoor testing version 2
 Not completed
11 04/30/2024 05/07/2024
  • Final project demo
 Not completed


Parts List & Cost

Item# Part Desciption Vendor Qty Cost
1 RC Car Traxxas 1 $250.00
2 CAN Transceivers MCP2551-I/P Microchip [2] 8 Free Samples


Printed Circuit Board

<Picture and information, including links to your PCB>


CAN Communication

<Talk about your message IDs or communication strategy, such as periodic transmission, MIA management etc.>

Hardware Design

<Show your CAN bus hardware design>

DBC File

<Gitlab link to your DBC file> <You can optionally use an inline image>



Sensor ECU

<Picture and link to Gitlab>

Hardware Design

Software Design

<List the code modules that are being called periodically.>

Technical Challenges

< List of problems and their detailed resolutions>


Motor ECU

<Picture and link to Gitlab>

Hardware Design

Software Design

<List the code modules that are being called periodically.>

Technical Challenges

< List of problems and their detailed resolutions>


Geographical Controller

<Picture and link to Gitlab>

Hardware Design

Software Design

<List the code modules that are being called periodically.>

Technical Challenges

< List of problems and their detailed resolutions>



Communication Bridge Controller & LCD

<Picture and link to Gitlab>

Hardware Design

Software Design

<List the code modules that are being called periodically.>

Technical Challenges

< List of problems and their detailed resolutions>


Driver Node

Gitlab Link: https://gitlab.com/jincyjose491/sjtwo-c/-/tree/master/projects/driver?ref_type=heads

<Picture>

Hardware Design

Driver node gives the interconnection between input and output. It receives input from geo node and sensor node and give commands to the motor node. The only hardware driver has is the LCD display and CAN transceiver. The LCD display used is a SunFounder IIC I2C TWI Serial 2004 20x4 LCD Module and is interfaced through an I2C bus through the I2C2 port. The module used and pin connections for LCD is shown below.

LCD Display
Table 6. LCD Display Pinout
SJTwo Board CAN Board
P0.11 SCL2
P0.10 SDA2
Vin 3.3
GND GND

Software Design

Driver has more software and less hardware. For navigation, there are two algorithms - obstacle avoidance and GPS navigation. Obstacle avoidance has precedence over GPS navigation. In case of any obstacle, car avoids obstacle. In other cases, it follows the path from geo node input.

Obstacle Avoidance

The obstacle avoidance code is written in the form of a truth table that has 4 bit input and one bit output. Inputs are four sensor values and output the motor commands. Bases on changes in sensor values, the motor command also changes. The logic that worked for us is given below

Table 6. Obstacle Avoidance Logic
left sensor right sensor middle sensor rear sensor motor command
0 0 0 X follow GPS navigation
0 1 0 X forward left
1 0 0 X forward right
0 1 1 0 reverse right
1 0 1 0 reverse left
X X 1 1 stop
1 1 0 0 reverse left

GPS Navigation

For GPS navigation the angle difference between heading and bearing is calculated and motor turn commands are generated based on this. Heading gives the current position in angle with respect to north. Bearing gives the angle to destination with respect to north. The logic that worked for our hardware is given below:

Table 6. GPS Logic
Angle difference = bearing - heading Turn Angle
0 to 180 left
180 to 360 right [angle = (360 - angle)]
-180 to 0 right
-360 to -180 left [angle = fabs(360 + angle)]

Technical Challenges

< List of problems and their detailed resolutions>


Mobile Application

<Picture and link to Gitlab>

Hardware Design

Software Design

<List the code modules that are being called periodically.>

Technical Challenges

< List of problems and their detailed resolutions>




Conclusion

<Organized summary of the project>

<What did you learn?>

Project Video

Project Source Code

Advise for Future Students

<Bullet points and discussion>

Acknowledgement

References

Retrieved from "http://socialledge.com/sjsu/index.php?title=S24:_Team_Falcons&oldid=71388"