Copyright © 2010-2023 Ted Burke, All Rights Reserved.
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Recent Posts
- Set timezone to Europe/Dublin at command line in Debian Live
- Arduino Nano Timer 1 interrupt example for 100 Hz sampling
- Running Arduino IDE in a Debian Live session
- Installing VirtualBox on Debian 11
- More PRBS turtle graphics
- PRBS visualisation in the style of turtle graphics
- Using ffmpeg to take a snapshot with a webcam in Windows
- Using a serial byte sent from an Arduino to launch an application on the PC
- Generating variations on a code analysis question in a Brightspace quiz
- How to merge two Garmin .fit files and upload to Strava on Ubuntu
- Moving statue of David Foster Wallace
- TU Dubuntu 19.10 – a customised live USB version of Xubuntu Linux 19.10 for TU Dublin
- Using Canon EOS 70D DSLR as a USB web cam in Xubuntu Linux 19.04
- TU Dubuntu – a customised live USB version of Xubuntu Linux 19.04 for TU Dublin
- Using the PHP command line web server to transfer files between devices on a local network
- €5 PPG – photoplethysmogram amplifier / Arduino circuit
- Clap detector circuit / AirSpell typing system
- AirMouse – control mouse pointer in Linux using one switch or by blowing on microphone
- Some RGB fractal doodles
- How to display USB webcam as live video on desktop using mplayer
- Ronan Byrne’s ultra low-cost brain-computer interface
- H-bridge control example for Arduino Nano (ATmega328) – two phase-displaced square waves
- An offcut from the Fraktalismus pattern factory
- Cafe Terrace at Starry Night
- €2 Robots in DIT
- A brief introduction to binary numbers…
- Can the PIC12F675 drive motors directly from its GPIO pins?
- Minimum Viable Program for PIC12LF1572
- dsPIC30F Quadrature Encoder Interface (QEI) – Basic Example
- Simple example program for the PIC12F675 microcontroller
- A simple way to read and write audio and video files in C using FFmpeg (part 2: video)
- A simple way to read and write audio and video files in C using FFmpeg (part 1: audio)
- Fraktalismus Outtakes: Sea Monsters
- Fraktalismus – my presentation at Dublin Maker 2016
- Example code from presentation: Ways of Seeing Julia Sets
- C or Python? Comparison of execution time for Mandelbrot image generation
- Julia Set Explorer
- (no title)
- What I’m working on right now…
- Simple 2-channel hardware PWM example for the MSP430G2452 microcontroller
- RoboSlam @ Dublin Maker – only two days away!
- Generating antiphase PWM signals with the dsPIC30F4011
- Very simple Python / Tkinter GUI to send selected keystrokes via serial port
- Using a dsPIC30F4011 to generating 4 PWM signals with equal duty cycles but at 90 degree phase increments
- Faster Mandelbrot image generation using numpy in Python
- Fractal variations using Python
- Using SendInput to type unicode characters
- Three PWM outputs with three different frequencies using the dsPIC30F4011 microcontroller
- 8-channel PWM with the MSP430G2553
- Simple Phaser Framework example – Flappy Words
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Monthly Archives: November 2011
Writing Bitmap Files in Windows
This is a bitmap file writing example. I compiled it with MinGW (gcc). It generates the following image and saves it as a bitmap file called “image.bmp”. Here’s the source code:
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Tagged bitmap, BITMAPFILEHEADER, BITMAPINFOHEADER, bmp, C, gcc, MinGW
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Ultra-simple machine vision in C with RobotEyez
I use PGM image files a lot in my Engineering Computing class because the provide a really easy way for novice programmers to get started with image processing in C. This file format stores greyscale images in plain text and … Continue reading
Posted in Uncategorized
Tagged C, command line, DirectShow, image processing, machine vision, PGM, PGM viewer, RobotEyez, video capture, WatchPGM, Windows
85 Comments
Simple data plotting from a C console application using SVG
Synopsis: Write a console application that processes some data. Use the technique below to easily generate a graphical plot of your data using only standard C library functions (fopen, fprintf, fclose). View the plot in an ordinary web browser. A … Continue reading
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Tagged C, console application, data, HTML, plot, plotting, SVG, visualization
3 Comments
ShapeSorter – a simple PGM processing example
This is a simple PGM image processing example program.
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PGM image processing example
This C program is an example of simple image processing using PGM files. PGM files can be viewed using programs such as ImageMagick, GIMP, and IrfanView.
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Blobs
This is a little program I’ve just written to generate PGM image files of random blobs like the following ones: Binary download: http://dl.dropbox.com/u/2482633/blobs.exe Source code file: http://dl.dropbox.com/u/2482633/blobs.c
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CommandCam – a DirectShow command line cam image grabber for Windows
EDIT (24-11-2011) : Since publishing this post, I have found myself making frequent updates to the CommandCam program, so I’ve created a dedicated page for it instead, with up-to-date information and download links. Get CommandCam here (binary download and source … Continue reading
Posted in Uncategorized
Tagged cl, command line, CommandCam, DirectShow, image capture, Image Grabber, SampleGrabber, snapshot, snapz, video capture, webcam, Windows
26 Comments
Protected: ProjecTable Analytical Solution (three sensors in a line)
There is no excerpt because this is a protected post.
Making an Ubuntu startup / installation disk on a hard drive partition
To create an Ubuntu startup / installation disk on a hard drive partition (when running Ubuntu – I’m running version 11.04), use the following command. usb-creator-gtk –allow-system-internal It just runs Ubuntu’s normal USB startup disk creation tool, but makes it … Continue reading
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Tagged allow-system-internal, startup disk, Ubuntu, usb-creator-gtk
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