12 Aug
2011
12 Aug
'11
2:32 p.m.
Hello!
I skimmed over the schematic and noticed that the power output from the
FTDI cable is connected directly to the 3.3V line. In my experience the
output from the FTDI cable is 5V even though it is the 3.3V version. I
have actually fried some designs due to this.
I'm not 100% sure about this, but my tips is to check it before you
connect it.
Best regards,
/Stefan
13 Aug
13 Aug
8:02 p.m.
On Fri, Aug 12, 2011 at 02:32:20PM +0200, Stefan Petersen wrote:
Hello!
I skimmed over the schematic and noticed that the power output from the
FTDI cable is connected directly to the 3.3V line. In my experience the
output from the FTDI cable is 5V even though it is the 3.3V version. I
have actually fried some designs due to this.
thanks a lot for pointing this out!
I recommend cutting the voltage wire of the 6pin FTDI connector before
plugging the cable into the simtrace.
--
- Harald Welte <laforge(a)gnumonks.org> http://laforge.gnumonks.org/
============================================================================
"Privacy in residential applications is a desirable marketing option."
(ETSI EN 300 175-7 Ch. A6)
15 Aug
15 Aug
11:38 a.m.
On 08/13/2011 08:02 PM, Harald Welte wrote:
I recommend cutting the voltage wire of the 6pin FTDI
connector before
plugging the cable into the simtrace.
added the information to the wiki and usermanual:
http://bb.osmocom.org/trac/wiki/SIMtrace/Hardware?version=10
http://bb.osmocom.org/trac/attachment/wiki/SIMtrace/usermanual.pdf
z.
3:38 p.m.
Hi,
On 15.08.2011 11:38, Holger Hans Peter Freyther wrote:
On 08/13/2011 08:02 PM, Harald Welte wrote:
This pin will not be connected in v1.1. I will also write a ticket for it.
Thanks for the warning.
Kevin
I recommend cutting the voltage wire of the 6pin
FTDI connector before
plugging the cable into the simtrace.
5053
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5056
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3 comments
4 participants
participants (4)
-
Harald Welte -
Holger Hans Peter Freyther -
Kevin Redon -
Stefan Petersen