Using CHDK to photograph blackboards in University Courses August 5, 2010
Posted by GuySoft in Crictor, diy, Hamakor, ITU, linux, open source, programming, python.Tags: chdk, diy, hacking, open source, programming, python, university
6 comments
CHDK used in university for capturing blackboards
Hi all,
During last semester I developed a set of scripts that lets me photograph pictures of the blackboards during my university courses, categorize them while I am taking them and automatically generate PDF document for each course week. Because physics equations are not the simplest things to input in to a laptop in realtime, I have developed the following method. I am writing the post because I have a feeling this tool could help people in many ways, since it did change how I study in lectures.
You can see my blackboard photographs here (and here is a simple pdf example, if you get lost in the Hebrew).
How it works in a nutshell
The work flow - photograph, store, generate pdfs
During the lesson I take the photographs of the blackboard with a script I wrote for CHDK. In the script you set the course and week of the semester and this is stored per-picture on the SD card.
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Astrophotography Using Canon Camera’s Hack Development Kit August 16, 2009
Posted by GuySoft in Astronomy, Crictor, diy, Hamakor, ITU, linux, open source, programming.Tags: Astronomy, basic, camera, chdk, diy, ffmpeg, hacking, meteors, negev, open source, programming, video
10 comments
Hi all,
I am going to explain here how I managed to use the Cannon open source hack development kit , known as CHDK, to photograph stars and even create neat movies of the stars motion.
It all started this Monday, I was lucky to see that there is going to be Perseids meteor shower, a day in advance. So I had time getting the code ready before it was too late. I thought I would go somewhere next to Jerusalem and photograph, but in the end, friends of mine (Shy and Anna) from the Israeli Astronomy Association, which I am part of, told me they are going down south to the dessert, far away from light pollution, to take count of the meteors for the IMO. So I joined him, and my data is also available.
Before all the technical stuff, here is a video I made that shows you what this all comes to:
Now back to CHDK, and how this was done.
What is CHDK? And how do I install it?
CHDK is a firmware addon for Cannon powershot digital cameras. It supports most of them, mine is a simple powershot A590, costs to date about 700 NIS. Moreover, since its an addon, it will not void warranty, and can’t damage your camera. It has a lot of features (including games and an e-book reader!).
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