From: Gordon Dobie <gordondobie@ee...> - 2007-01-10 12:16:18
I replaced the DC-DC converter and it started working perfectly, I must
have had a defective converter.
Some quick tests on the defective converter showed that it could drive
over around 2mA of pure resistive load; I will just replace it.
Thanks for the help.
[mailto:gumstix-users-bounces@...] On Behalf Of Dave
Sent: 10 January 2007 00:38
To: General mailing list for gumstix users.
Subject: Re: [Gumstix-users] Over current problem
> I am currently using a gumstix basix 200 and a robostix. Nothing is
connected to any IOs or the 92pin header and there is no mmc card in the
slot. I am powering the board through the board power on the robostix
and have the jumper connected to power the pwm through the board also
(although nothing is connected to the pwm outputs yet - it won't even
boot). I have a RS232 level translator attached to the gumstix port on
the robostix, taking power from the 5v pin on that gumstix port, but it
should require minimal power.
OK - so your problem is that it won't boot at all, or the it resets
part way through the boot? And only when powered using the switcher?
Do you have something connected to the serial? and see nothing on the
serial port as well?
This pages has some troubleshooting steps for checking the voltage
regulators on the robostix.
In particular, check out the V_BATT voltages. You may need to add a
10k pullup resistor as described here:
The resistor is definitely required if no serial adapter is plugged
into the gumstix connector, and maybe required for some serial
Vancouver, BC, Canada
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