Entries by Andrew

Project Summary

Executive Summary Overview By: Andrew Le – Project Manager The objective of the Rover Project is to improve on RObot SCOut (ROSCO), a rover created by Arxterra.  It is controlled remotely by using Arxterra’s Interface in conjunction with an Android OS phone running version 3.2 or newer.  The brain is the Arduino Uno and each […]

Final DC Motor Code

By Eduardo Contreras – Computer, Power, and Powertrain Here is the final code needed to run the rover with Arxterra. The highlighted lines are the new changes I made in order for it to work with the updated version of the Adafruit Motor Shield, as well as for the motors replacing the servos. Personal Note: […]

Speed

Post by Andrew Le Testing conducted by Eduardo Contreras, Jimmy Fernandez, and Santiago Landazuri After calibrating and tweaking the tracks’ tension, grip on surface, and hold on the wheels (wheelslip), test runs were conducted. Speed Tests To test typical speed of the Rover, a yardstick was used to measure distance. A stop watch was then […]

Battery Comparisons

NiCd vs NiMH vs. LiPo Battery Packs By Jimmy Fernandez – Systems Engineer Abstract In this study, we are researching the best battery pack to use for our Tracked Rover project.  While each of the batteries have their pros and cons, the properties of our chosen battery must satisfy our project requirements.  The choice ultimately […]

DC Motor to Servo Conversion Beta Code

By Eduardo Contreras – Computer, Power, and Powertrain The following code is a beta version of converting a dc motor into a servo: #include <Wire.h> #include <Adafruit_MotorShield.h> #include “utility/Adafruit_PWMServoDriver.h” Adafruit_MotorShield AFMS = Adafruit_MotorShield(); Adafruit_DCMotor *myMotor = AFMS.getMotor(1); const int deg_error = 15; int cur_pot = 0; int new_pot = 160; int inputPin = A0; void […]

Tread Development

Tread Development Progress By Julian Sanz – Manufacturing, 3D Printing The original tank tread for the Rover is a single continuous printed piece. It is actually a reconstruction of a 3D printed bracelet. It had undulations that would allow it to stretch slightly due to nylon’s flexibility. This allowed the tread to snap on around […]

Resource Report

Resource Report – Power/Mass By Jimmy Fernandez – Systems Engineer Power consumption and mass resource reports for the Rover Project are provided below:

System and Subsystem Requirements

Level 2 and Level 3 Requirements By Jimmy Fernandez – Systems Engineer System Requirements System requirements for the Rover Project were derived from our on-field testing results and planned course route. Specific system requirements were formed by these field surveying tests. These requirements are necessary to fulfill our top level mission requirements.