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: October 2012
Working dsPIC30f4011 code to control servo angle from PC via serial
Here’s a working example of servo angle control from the PC, via serial communication to the dsPIC30F4011. The servo angle is set using a 5 character long command: The first character is ‘s’. The remaining four characters, which must all … Continue reading
Posted in Uncategorized
Tagged angle, dsPIC, dsPIC30F, dsPIC30F4011, PDC1, PICkit 2, PTPER, pulse width, PWM, serial, servo, UART
2 Comments
Simulating a Ctrl-V keystroke in Win32 (C or C++) using SendInput
This short example program simulates pressing Ctrl-V on the keyboard (the Windows shortcut for “Paste”) once every second. It’s a modified version of an earlier example I posted on keystroke simulation using the Win32 SendInput function. What’s different this time … Continue reading
Automating image creation with ImageMagick
I sometimes evangelise about how important it is for engineers to be familiar with “professional-grade” drawing software. My heart sinks when I see people drawing diagrams in MS Paint (the free drawing tool that comes with Windows). Software of that … Continue reading
Posted in Uncategorized
Tagged Brobot, command line, compositing, image processing, ImageMagick
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Posting C code on wordpress.com
I see a lot of people (including many of my students) having problems posting C code on wordpress.com blogs, even when they use the “sourcecode” shortcode which is provided for exactly this purpose (see here for details). The following are … Continue reading
Posted in Uncategorized
Tagged angle bracket, C, code, indentation, shortcode, sourcecode, wordpress.com
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Short dsPIC30F4011 program to test output compare SFR values
I’ve been playing around with the output compare feature of the dsPIC30F4011 microcontroller for the last day or two and finding out some interesting things about it. There are two output compare channels (OC1 on pin 23, OC2 on pin … Continue reading
PWM Sinewave generation using output compare on dsPIC30F4011
Reader Manu Abraham wrote in with an interesting query about sinusoidal variation of PWM duty cycle using the output compare feature of the dsPIC30F4011. The 30F4011 has two output compare channels which can be used to very easily generate periodic … Continue reading
Posted in Uncategorized
Tagged dead time, deadtime, dsPIC, dsPIC30F4011, inverter, modulation, MOSFET, OC1R, OC1RS, OC2R, OC2RS, OCxR, OCxRS, output compare, PR2, push-pull, PWM, sine, XC16, xc16-gcc
11 Comments
Drawing Trees with PyCairo
I’ve been spending some time this evening playing around with PyCairo, which is a very handy drawing library for Python. Actually, Cairo is the underlying drawing engine and PyCairo is a set of Python bindings for it. Anyway, in this … Continue reading
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