Skip to main content ↑ ↓

Topics

This section allows you to view all Topics made by this member. Note that you can only see Topics made in areas you currently have access to.

Topics - PGMarv

1
Bus Pirate Support / Identifying a Bus Protocol
Hey there! I am trying to read data from my heating system and need to identify the protokol spoken on the wires. Many Days of searching the web did not bring any results so it looks like i am on my own. I do not have a real scope but maybe my Bus Pirate's readings help to identify what's spoken on that bus...

There are three wires connected to the remote control i want to hack. A is probably "App", B "App/Ground" and C what's remaining of 12V behind a long cable. I measured 9,5V between B and C. Between A and B there are 3,49 V so i connected the Bus Pirate with the miniscope to those two.

I don't know it the slow sampling or the low resolution is the problem here, but i expected one high and one low level and the signal changing just between thos two levels - but that's not what i get:

[attachment=1]

One Datagram every 1 or 1,4 Seconds or so. But the Voltage falls and rises from "silence-level"!? What is that?

[attachment=0]

I would really appreciate any help over here ;)

( ! ) Fatal error: Uncaught exception 'Elk_Exception' with message 'Please try again. If you come back to this error screen, report the error to an administrator.' in /var/www/dangerousprototypes/forum/sources/database/Db-mysql.class.php on line 696
( ! ) Elk_Exception: Please try again. If you come back to this error screen, report the error to an administrator. in /var/www/dangerousprototypes/forum/sources/database/Db-mysql.class.php on line 696
Call Stack
#TimeMemoryFunctionLocation
10.01182249000session_write_close ( )...(null):0
20.01212380592ElkArte\sources\subs\SessionHandler\DatabaseHandler->write( )...(null):0
30.01212381368Database_MySQL->query( ).../DatabaseHandler.php:119
40.05542520104Database_MySQL->error( ).../Db-mysql.class.php:273