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Hi,
I've been looking for info about Heatronic protocol (description or implementation).
It's kind of CAN bus variant used to control Junkers home heaters.
thanks and
Happy new year 2013
lcd contrast control
Hi,
I just found following circuit with the code to generate -3V ... +1V:
h**p://www.piclist.com/techref/microchip/pwmvee.htm
hope it helps
Hi,
you can setup "dhcp reservations" on your dhcp server (router).
dhcp reservation assignes the ip address based on client MAC address,
therefore the same client will get always the same ip address (like static ip).
Be aware that this is not bulletproof and secure because any power win user...
Re: unix shells
Hi,
use "magic number" #! at the first line of the script, for example
#!/bin/bash
this specify, which shell will be used to execute the script, see:
h**p://www.faqs.org/faqs/unix-faq/faq/part3/section-16.html
blue_snake
photo diode bright light
Hi,
here is the article describing the use of fully exposed
and developed photographic film negative as cheap ir filter
(it is dark = no visible light, but still quite transparent to ir)
h**p://geektechnique.org/index.php?id=254
USB keyboard switch
Hi,
does anyone heard about simple usb keyboard switch ?
somthing like ps/2 keyboard switch to switch keyboard
between more computers, but usb version for usb keyboard
it should listen on usb and switch usb port on predefined
key event ...
i found some:
- very complex...
wiegand 26 protocol
Hi,
it is a 3 wire (GND, DATA0, DATA1):
0's are impulses on DATA0 line
1's are impulses on DATA1 line
data bits are prefixed and postfixed with parity
length of data bits chunk can vary from 24-40 bits
i have somewhere in the archive my very old
asm implementation for...
fdk　portalplayer
Hi,
out of curiosity i'm studying my iriver firmware
but there are many memory mapped i/o operations
hard to fully understand without hw details
iriver is based on portalplayer pp5020 soc (arm7tdmi)
h**p://www.portalplayer.com
unfortunately portalplayer web site doesn't...
The String and "M" theory looks promising to be "unified theory of everything" ....
There is also NOVA popular documentary called "Elegant Universe"
hxxp://www.pbs.org/wgbh/nova/elegant/
VoIP phone USB to RJ11
Hi,
Has anyone any personal experience with usb to rj11
converters used to connect normal phone to pc ?
They are sold on ebay:
hxxp://cgi.ebay.ca/ws/eBayISAPI.dll?ViewItem&rd=1&item=5741253425
current price $61 + shipping
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