Subject:
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brickos-0.2.6.10 CONF_DSENSOR_MUX problem
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Newsgroups:
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lugnet.robotics.rcx.legos
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Date:
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Thu, 15 May 2003 06:57:15 GMT
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Viewed:
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3363 times
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After I have done the changes desribed in
thread: http://news.lugnet.com/robotics/rcx/legos/?n=3266
Subject: brickos-0.2.6.10 .text is not within region ram
now i can compile the kernel with CONF_DSENSOR_MUX.
But the DSENSOR_MUX does not work.
I have checked this item with an osciloscope on the INport of RCX.
The switching is not working (sensor in avtiv for 10ms /passiv 10ms and so on).
To test this stuff without having an osziloscope almost everybody can do
that with the PC and a soundcard.
1) description of the simple curcuit:
RXC port has activ about 7 V .
The input of a soundcard (called AUX or LINEIN ) need approx. 700mV (it
is more or less the same voltage you need fon taperecorder or preamplifieres).
So you need 2 resistors drop down the volatage from 7V to 0.7 V
100 KOhm
___
7V ----I___I---------------------- 700 mV to AUX/line input from soundcard
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port --
from I I
RCX I I 10 KOhm
I I
--
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------------------------------- to GND input from soundcard
2) you need a windows program for recording (eg Soundforge) and to visualize
the *.wav file.
best regards Bernhard
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Message has 1 Reply:
 | | Re: brickos-0.2.6.10 CONF_DSENSOR_MUX problem
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| I tried the following program and it seems to be doing something useful with the sensor power. I looked at it on the scope and it generates a regular pattern with 10ms pulses. I don't have one of these sensor mux devices so I can't actually tell if (...) (22 years ago, 19-May-03, to lugnet.robotics.rcx.legos)
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