Microcomputer Project Updates
-
Accelerometer Testing
27 May 2010 1:59 PM | 2 Comments -
Final Project
12 May 2010 9:48 AM | No Comments -
Project Proposal
07 April 2010 12:27 PM | No Comments -
PWM / Motor Control Update
31 March 2010 9:05 AM | No Comments -
Preliminary Investigation
30 March 2010 12:25 PM | No Comments
-
Microcomputers Archive
-
Accelerometer Testing
This post looks into the actual output of the accelerometer and investigates several filters that can be used to smooth the data. I am slowly working towards the second phase of my microcontroller project. I hope to have a new proposal ready soon, but for now I have been working on my signal processing. I am very [...] -
Final Project
Class: ECE 2620 – Intro to Microcomputers Semester: Winter 2010 Instructor: Dr. Hassoun Essentially this project is a two degree of freedom robotic arm controlled by an accelerometer. The accelerometer is mounted on a breadboard that the user can tilt in space controlling the direction of a laser pointer mounted to the arm. The entire project is programed in assembly [...] -
Switch Bounce
Most people who have dabbled in embedded design know that all mechanical switches have some amount of “bounce” where they are not making solid contact for a short time after being pressed or released. If you manage to read the button fast enough that you make more than one reading while the button is still [...] -
Project Proposal
I have just gotten approval on my project proposal. Eventually this contraption will be a 2 degree of freedom robotic arm that will be able to balance a tennis ball on a plate even when the base is tipped. For now it will just look like a simplified arm that responds to the input of an accelerometer. [...] -
Equate File for HC11 Registers
I couldn’t find an equate file of the registers for the 68HC11 anywhere online, so I just typed it all in myself. To spare others from the same tedium I am posting it here in hopes that anyone who needs it can find it easily. The file includes both the extended addresses of each of [...] -
PWM / Motor Control Update
As it turns out, the ubiquitous little servo motors that seem to be everywhere are more sensitive to the PWM signal being sent to them than I originally thought. At first I thought that as long as you were sending them a pulse that was the appropriate length that the frequency did not matter much, but try [...] -
Preliminary Investigation
I am currently trying to come up with some interesting ideas for my final project in Intro to Microcomputers. The project is pretty much open ended just providing that you use most of what we have learned in class. Two things I am looking at, even though I am not sure what exactly I plan [...] -
Lab 8 – Interrupts
This lab explores the interrupt, its uses and its use of the stack. Without interrupts, a processor is required to poll each condition that it is required to react to. Whether it is checking to see if a button is pressed, or if a bit has been received on a serial pin, the processor is [...] -
Lab 7 – Stack Pointer & Subroutines
This lab provides an introduction to using the stack and subroutines. Both of these topics are critical for efficient assembly programing. The name ‘stack’ gives a very good description of the function of the stack pointer and its use; when something needs to be stored temporarily and will be used again soon it can be [...] -
Lab 6 – Intro to HC11 EVB
This experiment serves as an introduction to the EVB. While there are many methods for communicating with the EVB we will use the THRSim11 to assemble and download our programs to the board. Since we are already familiar with the simulator the transition to the actual board is elementary. The simulator software simply requires that [...]