Copyright © 2010-2020 Ted Burke, All Rights Reserved.
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Recent Posts
- 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
- Installing Microchip XC16 in CrunchBang Linux
- Low-cost motor control by displaying coloured shapes on a phone or PC screen
- Phasor diagrams in GNU Octave
- 2D Room Mapping With a Laser and a Webcam
- Motion Tracking on the Cheap with a PIC
- Big Foot Magic Hands
- Keyboard shortcut to simulate a mouse right-click in CrunchBang Linux
- Real-time analysis of data from BioSemi ActiveTwo via TCP/IP using Python
- Programming the PIC16F819 on an LCD03 adapter using a PICkit 2
- Simple communication with a TCP/IP device using Python
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Author Archives: batchloaf
Moving statue of David Foster Wallace
I’m experimenting with adding different types of animated noise to static images to create an illusion of movement. Nothing very successful so far, but I’m enjoying the periodic modulation of the pixelation effect on this picture of David Foster Wallace. … Continue reading
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TU Dubuntu 19.10 – a customised live USB version of Xubuntu Linux 19.10 for TU Dublin
This post documents the steps I followed to create a customised version of the Xubuntu 19.10 live CD. I called the modified image “TU Dubuntu” (after my university, TU Dublin), but it’s really just Xubuntu with some additional software packages … Continue reading
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Using Canon EOS 70D DSLR as a USB web cam in Xubuntu Linux 19.04
For a while now, I’ve been interested in using my Canon EOS 70D DSLR as a USB camera so that I can record (and potentially live stream) better quality tutorial videos. The quality of video from the 70D is super … Continue reading
TU Dubuntu – a customised live USB version of Xubuntu Linux 19.04 for TU Dublin
This post documents the steps I followed to create a customised version of the Xubuntu 19.04 live CD. I called the modified image “TU Dubuntu” (after my university, TU Dublin), but it’s really just Xubuntu with some additional software packages … Continue reading
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Tagged bootable, customization, live cd, live USB, TU Dubuntu, USB drive, USB key, xubuntu
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Using the PHP command line web server to transfer files between devices on a local network
When you install PHP, you get a simple built-in webserver as a bonus. This is very handy for testing web pages you’re writing, but I also sometimes use it as a simple way to transfer files between devices on my … Continue reading
€5 PPG – photoplethysmogram amplifier / Arduino circuit
The photoplethysmogram (PPG) is a signal that measures changes in blood volume in some part of the body (e.g. the fingertip) by shining light into the skin and detecting small changes in the level of light absorption that occur due … Continue reading
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Tagged amplifier, Arduino, Arduino Nano, breadboard, LM358, op-amp, opamp, photoplethysmogram, photoplethysmograph, ppg, TCRT5000
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Clap detector circuit / AirSpell typing system
This circuit combines a simple audio amplifier (based on an LM358 opamp) with an Arduino Nano to facilitate the detection of clapping sounds or blowing on the microphone. This is my breadboard circuit: I actually used a loudspeaker for my … Continue reading
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Tagged accessibility, amplifier, Arduino, Arduino Nano, assistive technology, audio amplifier, bash, breadboard, clap, click, detector, input device, Linux, LM358, microphone, mouse, on-screen keyboard, onboard, op-amp, opamp, serial, xdotool, xubuntu
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AirMouse – control mouse pointer in Linux using one switch or by blowing on microphone
Article under construction! To install xdotool: Bash script (save as “airmouse” and “chmod 755 airmouse” to make it executable): Arduino code:
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Tagged accessibility, amplifier, Arduino, Arduino Nano, assistive technology, audio amplifier, bash, breadboard, clap, click, input device, Linux, LM358, microphone, mouse, op-amp, opamp, serial, switch, xdotool, xubuntu
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Some RGB fractal doodles
Click on the animation to view full size gif. This is the code I used to generate the animation: The version below is obtained by modifying the iterating function on line 59 of the program, as follows: Click on the … Continue reading
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How to display USB webcam as live video on desktop using mplayer
mplayer -tv driver=v4l2:gain=1:width=1280:height=720:device=/dev/video1:fps=10:outfmt=rgb16 tv://
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