Compass Sensor with Microcontroller Project

INTERFACING AN ANALOG COMPASS TO AN EMBEDDEDCONTROLLER
AbstractThis paper describes the development of a compass sensing unit for use on a remotely operated vessel. The sensor determines the direction of the vessel’s path to aide the user in operating the boat wirelessly through a laptop. The system provides information tofacilitate tracking and controlling the boat when it is not easily seen by the operator. The selected compass, Dinsmore R1655 analog compass sensor, was used in conjunction ofan 8051 microcontroller to provide the necessary data. The system was able to read an analog value from the sensor and convert it to digital direction. The paper will describe the system design and present test results.

http://www.icee.usm.edu/icee/conferences/asee2007/

papers/630_INTERFACING_AN_ANALOG_COMPASS_TO_AN_EMBE.pdf

Microcontroller Design Final Project: Digital Compass
The goal of this project is to build a digital compass that displays both the direction and cardinal points on a television. Other functionalities were added to complement the sensor interface, such as, temperature display, magnetic declination input and disability option.

http://instruct1.cit.cornell.edu/courses/ee476/FinalProjects/s2004/ccw27/index.htm

Electronic Compass Design using KMZ51 and KMZ52
This paper describes how to realize electronic compass systems using the magnetoresistive Sensors KMZ51 and KMZ52 from Philips Semiconductors. Therefore, firstly an introduction to the characteristics of the earth´s magnetic field is given. In the following, the main building blocks of an electronic compass are shown, which are two sensor elements for measuring the x- and y-components of the earth field in the horizontal plane, a signalconditioning unit and a direction determination unit.

Functional block diagram of an electronic compass

http://www.nxp.com/acrobat_download/applicationnotes/AN00022_COMPASS.pdf

Autocalibration of an Electronic Compass for Augmented Reality

Abstract

Electronic compass is often used to provide the absoluteheading reference for tracking the user’s head and handsin Virtual Reality (VR) and Augmented Reality (AR),especially for outdoor AR applications. However,compass is vulnerable to environment magnetismdisturbance. Existing compass calibration methodsrequire complex steps and true heading reference whichis often impossible to be obtained in outdoor ARapplications, and is useful only when compass is inhorizontal plane. An autocalibration method without theneed of heading reference and redundant Sensors isproposed in this paper. First the compass error modelbased on physical principle is presented, then thealgorithm to calculate the compensation coefficients witha set of sample measurements of the Sensors in thecompass is described. Because the influence of theenvironmental disturbance has been effectivelycompensated, the calibrated compass can providedaccurate heading even when it is under large tilt attitude.

http://csdl2.computer.org/comp/proceedings/ismar/2005/2459/00/24590182.pdf

3-AXIS COMPASS REFERENCE DESIGN with Microcontroller Circuit

The HMC1052 two-axis magnetic sensor contains two Anisotropic Magneto-Resistive (AMR) sensor elements in a singleMSOP-10 package. Each element is a full wheatstone bridge sensor that varies the resistance of the bridge magnetoresistorsin proportion to the vector magnetic field component on its sensitive axis. The two bridges on the HMC1052 areorientated orthogonal to each other so that a two-dimensional representation of an magnetic field can be measured. Thebridges have a common positive bridge power supply connection (Vb); and with all the bridge ground connections tiedtogether, form the complete two-axis magnetic sensor. Each bridge has about an 1100-ohm load resistance, so eachbridge will draw several milli-amperes of current from typical digital power supplies. The bridge output pins will present adifferential output voltage in proportion to the exposed magnetic field strength and the amount of voltage supply acrossthe bridge. Because the total earth’s magnetic field strengthis very small (~0.6 gauss), each bridge’s vector component ofthe earth’s field will even be smaller and yield only a couple milli-volts with nominal bridge supply values. Aninstrumentation amplifier circuit; to interface with the differential bridge outputs, and to amplify the sensor signal byhundreds of times, will then follow each bridge voltage output.

http://www.ssec.honeywell.com/magnetic/datasheets/hmc1055.pdf

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Schematic One Motor Walker Robot Without uC

Robot is interesting electronic project. We often see that robot project need a microcontroller as main processor. But if you don't have any programming skill yet, don't worry, you can build one motor walker robot by Jerome Demers. Yes the it's a walker robot without a microcontroller. The robot is base on the principal of B.E.A.M robotics! Building simple and elegant robot inspired by insect.

See the robot in action



via circuitlake

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Robot Arm Project and Robot ArmVedio

AROBOT ARM TUTORIAL
The robot arm is probably the most mathematically complex robot you could ever build. As such, this tutorial can't tell you everything you need to know. Instead, I will cut to the chase and talk about the bare minimum you need to know to build an effective robot arm.

http://www.societyofrobots.com/robot_arm_tutorial.shtml

Design and Application of a 3 DOF Bionic Robot Arm

High efforts are put in the mechanical design of industrial manipulators to obtain high position accuracy using rigid joint actuators and rigid arms resulting in heavy masses of arms. For safety reasons, they can only be used in environments strictly separated from humans. Thus they stand in remarkable contrast to animals and humans with their much better relationship from payload to arm weight, and its concurrent high movement quality by "intelligent" control.

http://www.tu-ilmenau.de/fakmb/Design-and-Applicati.4081.0.html

Robotic arm

I present the results, hoping it will be useful to other people who are also interested. This robotic arm is a little demonstration, it uses stock servo-motors normally used in RC models, and is controlled from a pc, attached with a serial cable.

http://gidesa.altervista.org/roboticarm.php

Computerized wireless Pick n Place Robot

this is the most advance version of “Pick n Place Robot” perhaps and most popular and widely used in recent industries. A person from a remote place can comfortably control the motion of robotic arm without any wire connection.

http://multyremotes.com/wireless-pick-and-place-robot.htm

RoboSim- A Simple 6-DOF Robot Manipulator Simulation System

RoboSim is a very simple simulation system for a 6 degres of freedom robot manipulator. The basic functions of the control panel are to move the manipulator either in joint coordinates or in cartesian coordinates. It is also possible, to change the view position or change length and color of the links. Joint weights may be set, in order to favor movement of individual joints versus others

http://robotics.ee.uwa.edu.au/robosim/

sbcRobotics

torsoHead LeftArm stepper motors showing, stepper motor control board, and cardboard hand or fingers. The cardboard fingers are place holders and have been cut to the same proportions as a human hand. This is needed to gauge the real distance for the arm's reach. The fingers will be replaced with the finished hand.

http://www.sbcrobotics.com/sbcRoboticsTorsoHead.htm
Atlas II Robotic SystemATLAS II is a complete robotic system consisting of the robot arm, power supplies, and control microcomputer.

http://www.doc.ic.ac.uk/~ih/doc/rac/racdocs2.html

Robot Arm Made Vedio

Robot Arm on How it's Made



Robotic Arm Made Out of Recycled Materials (Build)



My first Robot Arm



Robotic Arm With Four Degree Of Freedom



articulate robotic arm gripper mechanism




Robot arm with stepper motor



Robot arm simulation in Solidworks2009

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Schematic PIC LCD Oscilloscope for Spectrum Analyzers

This is simple and inexpensive LCD oscilloscope for spectrum analyzer display. The project use PIC 16F876A as main processor. Although a small LCD screen is not as good as analog oscilloscope, a LCD oscilloscope may be very useful in field measurements, for battery operation or you need different measurement at the same time along with oscilloscope.

The 80dB scale of this LCD oscilloscope can be adjusted with the two trimmers providing the reference voltages to the A/D converter. The operation of the LCD oscilloscope is slightly different between the 80dB mode and the 40dB mode. In the 80dB mode, the trace is always visible and saturates on the bottom or top of screen. In the 40dB mode, the trace runs out of the screen and only the central part of the original 80dB scale is displayed. This project designed by Matjaz Vidmar.

Download
Source code, documentation and schematic

tags : LCD, Oscilloscope, Spectrum Analyzer, PIC, microcontroller, project src

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Schematic USB PIC Programmer

If you start learning PIC microcontroller, you need PIC progrmmer to "fill" your PIC with compiled source code. You can build your own PIC programmer like USBPICprog project.

Usbpicprog is an USB in circuit programmer for Microchip PIC processors. The hardware is as simple. The latest version only contains one PIC18F2550, 3 mosfets, and besides the connectors a hand full of passive components.

download
Open source programmer

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Schematic ARM USB Data Acquisition

This project shows you how to build a simple data acquisition device around an LPC2138, ARM-based microcontroller. The system features a simple GUI that allows you to view graphed data instead of the streaming serial data in a terminal emulator session. In this project, Bruce gives example by collects temperature data from an analog temperature sensor and graphs it via a PC GUI.

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Source and PDF

tag : data acquisition, LPC2138, ARM microcontroller, project src

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Schematic PIC Low Cost USB-CAN Distributed Motion Control System

This project presents high performance distributed motion control system at extremely low cost. Rapid prototyping of multi-axis designs is often required during the development of automation equipment. One can use centralized controls with PC motion control cards, external amplifiers, and a tangle of wires, or utilize existing high cost distributed motion control system with RS485, Ethernet, or one of the fieldbuses (DeviceNet, CANOpen, Profibus, etc.). With the use of highly integrated microcontrollers, such as the PIC18FXX8, and power devices like the Allegro A3977/A3959, a very small and inexpensive system was developed.

Download
document and schematic

tag : motion control system, USB, PIC project src

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