Added first Report

docs/computer/student_Reports/Shubh_ROS_Report_2021.md

@@ -0,0 +1,71 @@
+---
+title: ROS Report for Internship at AUVZHCET
+author: Shubh Singhal
+email: [email protected]
+Duration: 1 July - 7 August 2021
+---
+
+## ROS (Robot Operating System)
+
+**Objective**: Complete ROS revision, Creating a basic talker & listener node
+
+**Resources**:
+ - [ROS tutorials](http://wiki.ros.org/ROS/Tutorials)
+ - [_towardsdatascience_  Blog](https://towardsdatascience.com/what-why-and-how-of-ros-b2f5ea8be0f3)
+ - [ Overview Video on ROS](https://www.youtube.com/watch?v=vrFFnupcRL4)
+
+ **Tech/Software used**: Ubuntu 20.04/ ROS Noetic
+
+ **Summary**:
+ ROS or Robot Operating System is a middleware, more of a low-level framework responsible for handling the communication between programs in a distributed system. The idea behind using ROS is creation of unique sub-programs (_nodes_) for each particular task. There are various parts of ROS such as topics, messages, nodes, services etc. In Robotics one has to deal with plenty of senosrs & actuators. Instead of creating a single large code-base to run the entire robot, ROS helps us in creating a distributed system for all these components.
+
+| ![ROS Workflow](static/Shubh_2021_1.jpeg) |
+| :---: |
+| Fig: Workflow of ROS |
+
+**Procedure**:
+A basic talker and listener node will be created. The talker node is responsible for detecting the keyboard input
+```
+#!/usr/bin/env python3                   #The first line makes sure your script is executed as a Python script.
+import rospy 
+from std_msgs.msg import String          #String message type will be used for publishing
+
+import getch
+
+def talker():
+    pub = rospy.Publisher('which_key', String, queue_size=10) #talker publishes to the topic which_key
+    rospy.init_node('key_publisher', anonymous=True) #Tells rospy the name of our node
+    rate = rospy.Rate(10)
+    while not rospy.is_shutdown():
+        key = getch.getch()  
+        pub.publish(key) 
+
+        rate.sleep()
+
+if __name__ == '__main__':
+    try:
+        talker()
+    except rospy.ROSInterruptException:
+        pass
+```
+The subscriber node will do as its name suggests. It subcribes to our topic `which_key` and logs the message.
+
+```
+#!/usr/bin/env python3
+import rospy
+from std_msgs.msg import String
+
+def callback(data):
+    rospy.loginfo("I heard %s", data)
+
+def listener():
+    rospy.init_node('key_subscriber', anonymous=True)
+    rospy.Subscriber('which_key', String, callback)
+    rospy.spin()
+
+if __name__ == '__main__':
+    listener()
+```
+ **Result**: Completed an overview of ROS from various resources. Created a talker/listener setup which detects `keyboard` inputs
+
+ **Future Work**: Shift current code to ROS

docs/computer/student_Reports/students.md

@@ -13,3 +13,4 @@ Format: [Designation - Team - Name - Academic Year] (Link to the doc)
 - [Acoustic Source Localization Subsystem - SAUVC - Mohd Hozaifa Khan - 2019-20](Acoustic-Source_Mohd-Hozaifa-Khan.md)
 - [COVID-19 Precautionary System for ZHCET - SAUVC - Mohd Hozaifa Khan - 2019-20](Computer-Team_SAUVC_Mohd-Hozaifa-Khan_2019-20.md)
 - [Vorc Competition](vorc.md)
+- [Intern-Computer Team-Shubh-ROS-2021](Shubh_ROS_Report_2021.md)