BlogCharlieplexing : the art of getting more out of less
Monday, February 11th, 2008This weekend I got my head around Charlieplexing, well I kinda understand how it works now. I won’t try to explain the electrical theory behind, I’ll provide links at the end of the post that do a better job. I will tell you that Charlieplexing allows you to drive LEDs (or LCD segments) with less […]
Environmentally friendly electronics
Sunday, February 10th, 2008This comment by Alison got me thinking about environmentally friendly electronics. I had a look at some of my bookmarks on delicious and found these gems:
Self sufficient Arduino (Solar powered)
How to make a Joule Thief (a flash torch that will drain the last bit of juice from your “dead” batteries)
Make your own hand crank radio
There’s […]
Arduino: bathroom (night)light prototype mobile edition
Saturday, February 9th, 2008I finally acquired a battery pack, DC main connector and a few crocodile clips to make the prototype portable. I opted for a 4 AA battery pack, because I heard/read somewhere that the 9V batteries don’t last very long, where as the 6 volts my battery pack spit out will last longer. Not sure where […]
Arduino and Processing serial interaction
Monday, February 4th, 2008This is more of a reminder for me, when trying to turn Arduino inputs into something that is usable by Processing (a nice language to visualise data quickly, which is also what Arduino IDE is based on). The following Arduino code, reads input from an Light Dependent Resistor and sends the value out via […]
Arduino: bathroom light prototype
Sunday, February 3rd, 2008This is one of my first “useful” projects i.e. has a practical use. Our bathroom light triggers a fan (we don’t have any windows) when turned on, which is fine until you have to pay a nocturnal visit…
Cue the gentle bathroom night light project!
And before I get the comments, yes yes I know I could […]