Search results
"tag:"tech""
| Title and summary | Date/time | |
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1 |
PROGMEM and GCC bug 34734
The Amtel AVR CPUs that are used in the Arduino boards aren't the familiar Von Neumann architecture machines we are all familiar with, where there is a "flat" address space that's shared between both code and data. Instead they are Harvard Architecture, ... |
05-Sep-2010 21:50:00 |
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2 |
SparkFun are less than electrifying
As part of my LED strip project I needed a 7-segment display capable of displaying two or more digits. I could have built something myself, but I'm short of time as it is so the SparkFun kelly green seven-segment serial display seemed like a good ... |
28-Aug-2010 20:10:57 |
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3 |
A very simple Arduino task manager
The LED chain project I'm working on requires that the AVR microcontroller handles several different tasks: Read a rotary encoder and switch Drive a seven-segment display Drive a radio Drive four LED strips each containing twenty LEDs Provide logic to ... |
20-Jul-2010 19:07:00 |
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4 |
Characterising the 7805
As the LED strips are going to be mobile, I needed to find a way of powering them. After some investigation, the 7.2 volt NiMH battery packs used by radio controlled cars seemed like a good choice - they are high capacity, relatively cheap and readily ... |
30-Jun-2010 17:54:00 |
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5 |
Configuring NetBeans to use as an Arduino IDE
As I've said in an earlier post, I very quickly found the Arduino IDE to be way too primitive for serious use, so I decided to switch to using NetBeans as an alternative. First step was to create a Makefile, once I had that done I needed to configure ... |
22-Jun-2010 20:09:00 |
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6 |
AVR SPI gotcha
I've had all sorts of problems getting a SPI radio device to work for the last few days - I wasn't using the default /SS pin to select the slave as I was reusing some code from another program that already used the default /SS pin for a different device. ... |
13-Jun-2010 22:30:00 |
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7 |
A Makefile for Arduino Sketches
When I started tinkering with Arduinos I started out with the standard Arduino IDE. It's great for getting started quickly but for more complex work, such as those involving libraries shared between Sketches, it quickly becomes limiting. What I wanted ... |
04-Jun-2010 16:19:00 |
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8 |
mod-rewrite equivalent for Tomcat
I've migrated and merged my old blogs.sun.com and bleaklow.com blogs into this new one, using Pebble. As a result, there are a number of links out there on the interwebs to bleaklow.com that are now broken, as everything has moved around - google's ... |
02-Jun-2010 18:15:00 |
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9 |
Bidirectional patterns with the HL1606
Most of the videos on YouTube of the HL1606 being driven with an Arduino have patterns that start of the controller end of the strip and propagate to the far end, for example this one. I'm driving patterns in two directions, and even outwards from the ... |
28-May-2010 18:54:00 |
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10 |
How the HL1606 REALLY works
I've explained in my last two Arduino posts how I got the HL1606 working with the Arduino's SPI support and hardware timers. If you haven't already read them, I suggest you read at least the first post before this one, otherwise what follows won't make ... |
27-May-2010 08:45:00 |
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11 |
Driving the HL1606 using the Arduino's hardware support
In my last Arduino post I explained the basics of how the HL1606 works, if you haven't already read that I suggest you read it first. The google code library that drives the HL1606 does so by bit banging the control lines. That's both slower and more ... |
26-May-2010 23:00:00 |
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12 |
How the HL1606 works
I've been asked by The Travelling Light Circus to make some radio-synchronized LED strips for them to use at the Big Chill Festival. I'm using 5V multicolour strips that I'm going to control with an Arduino. The strips are driven using the fairly ... |
24-May-2010 18:16:00 |
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13 |
Simple parser for MovableType exports
As part of moving my blog over to I needed to be able to transfer the content from my old MovableType blog and my blogs.sun.com blog, which runs on Roller. Both MT and Roller can export in MovableType export format and Pebble has a MT importer, so it ... |
23-May-2010 11:03:00 |
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14 |
Image thumbnailer for Pebble
This blog uses the Pebble package for delivering content. Pebble isn't a particularly common blogging package but it fits my purely personal and subjective requirements: Not written in PHP (blegh) Open source, and something in Java would be nice ... |
23-May-2010 09:54:00 |
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15 |
Stephen, I wonder if you recognise this?
I was reminiscing with Stephen about work yesterday, It's very faded after much use, but I wonder if he'll recognise the hat :-) |
22-May-2010 19:39:00 |
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16 |
Arduino on OpenSolaris
Ed Plese has kindly provided OpenSolaris x86 binaries for the Arduino development environment. This includes all the necessary dependencies such as avr-gcc. and will work on OpenSolaris x86 build snv_113 onwards. The tarball is hosted on the Sun Download ... |
12-Dec-2009 01:09:00 |
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17 |
Upgrading from Nevada to OpenSolaris the easy way
The OpenSolaris installer is simple and quick to use but it has one significant drawback - it gives you no control of how your disk is laid out. I needed to upgrade my Toshiba R500 laptop from Nevada to OpenSolaris and I had the disk set up with 3 VTOC ... |
21-Oct-2009 12:26:00 |
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18 |
Multicore cobblers
Found this article on the BBC website about multicore computing. It's written by Andrew Herbert (an apposite name), who seemingly is the head of Microsoft Research in Cambridge. It's just about the biggest load of cobblers I've ever heard about ... |
01-Nov-2008 03:46:03 |
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19 |
Facebook: do I get to say "I told you so?"
Just noticed that slashdot is running a story on Facebook applications and data privacy: Privacy activists are rallying around yet another major issue at Facebook, in which the company is secretly sharing user data with third parties. Researchers from ... |
07-Feb-2008 12:26:17 |
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20 |
Facebook faces privacy questions
Just noticed this report on the BBC News website: Facebook is to be quizzed about its data protection policies by the Information Commissioner's Office. The investigation follows a complaint by a user of the social network who was unable to fully ... |
18-Jan-2008 15:27:21 |
