Comments for omino code blog

Comment on 12f509 cheat sheet by David Van Brink

David Van Brink — Thu, 11 Dec 2008 15:42:50 +0000

Hi Raymond — I haven’t used the ‘675 yet. I do love these tiny 8-pinners though.

It’s not comprehensive, but most of my PIC code is viewable at http://omino.com/src/pic/

Look for asm files, like
http://omino.com/src/pic/wbl05bDemocracity/generalBlinker.asm .

Hope that might help, a little. I found the chip pretty straightforward to use, overall.

Comment on 12f509 cheat sheet by Raymond

Raymond — Wed, 10 Dec 2008 16:47:29 +0000

The most frustrating part about the widely used 12F508/509 is the general lack of published software examples. I want an assembler template and a .inc file for programing. Along with the 12F675 it looks like a usable chip set.

Comment on Nightlight Algorithm by David Van Brink

David Van Brink — Sun, 10 Aug 2008 22:02:11 +0000

hmm! Interesting. They could be using those inputs in all sorts of ways, like expecting a gradual darkening… or it might just be a sort of “self calibration” because photoresistors are so imprecise.

Pull it apart and run the experiments!

Comment on Nightlight Algorithm by Douglas Jones

Douglas Jones — Sun, 10 Aug 2008 15:15:19 +0000

Another approach… I pulled apart a light-controlled outlet with the hope that a simple reversal of the logic would make it turn on duringthe day instead of at night. Inside it wasn’t so simple; they had one sensor feeding two inputs with different resistor values so that one would change level before the other and based on that you know from the timing if it’s a quick shadow or someone messing with it.

I suppose I should try just inverting both inputs to see how it goes. I think pulling a chip off and finding a way to reprogram it is too much effort for what I want.

Comment on qt_tools 2.7 works on Leopard by David Van Brink

David Van Brink — Sun, 27 Jul 2008 14:47:25 +0000

Current mood: “grr”
But this ain’t LJ. :-)

Comment on qt_tools 2.7 works on Leopard by Daniel Jalkut

Daniel Jalkut — Sun, 27 Jul 2008 06:51:09 +0000

Nice detective work! You’re a true hacker, David :)

Comment on Retro USB MIDI Device VII by mattvb

mattvb — Wed, 21 May 2008 13:22:53 +0000

This is as lovable as a furry kitten. Yay

Comment on Retro USB MIDI Device V by Tracking Gamed Ankh and the MetaReal World of David Van Brink

Tracking Gamed Ankh and the MetaReal World of David Van Brink — Tue, 11 Mar 2008 03:29:37 +0000

[...] Ankh in 1984, because i have never seen the box until now, (pic above). The creator turns out to be David Van Brink a hardware hacker amongst other things. only props go out. They dont make em like they used [...]

Comment on Retro USB MIDI Device II by David Van Brink

David Van Brink — Thu, 06 Mar 2008 22:47:49 +0000

“Don’t you need to know the config of a device before writing code for it?”

Definitely!

It’s just that the communication *could* be done from user-level API rather than driver-level. I wish Mac and Win provided such an API.

Today, if you have a vertical application with some custom USB hardware, you will likely need to write a custom driver in addition to your custom application, just to talk to your widget.

(Unless you piggyback on serial, or HID, or some other existing protocol.)

Comment on Retro USB MIDI Device II by Universal Life Church

Universal Life Church — Thu, 06 Mar 2008 19:09:28 +0000

“Obviously, one would be well-advised to understand the device before conversing with it. But at present, one is required to write low-level drivers for, clearly, high level data manipulation.”

I’m not sure I follow. Don’t you need to know the config of a device before writing code for it?