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Power-up without pressing the Power button |
SuperMatz
Joined: Jan 30, 2007
Posts: 2
From: Sweden
PM |
Hi,
My first but not last post in Esato forum! 
I've got this HW project where I'll use an old Ericsson phone (T28s, R320s or similar) connected through RS-232 to a microcontroller to send automated SMS. I know, there are alot of those SMS Alarms and stuff out there but I want to do it myself.
I've been looking at open projects online for a while and those are ok. There is only one thing missing in all of these projects - the ability to power up the phone!
All phone based project assumes that the phone is powered up when sending the SMS. What I'm looking for is a way to "kick-start" the phone using a signal from my microcontroller.
Anyone that has a solution other than shorting the power button?
Any experiences in this matter would be of great interest!
BR,
Matz |
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mcrosser
Joined: Oct 11, 2005
Posts: > 500
From: Peru
PM |
mmmmmm ... don't know about the old Ericssons, but my K750 powers up when conected to the USB port, even if it is off... don't know if that helps much though ...
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ESTOR
Joined: Apr 20, 2002
Posts: > 500
From: Singapore
PM |
Those service type cables like "terminator dongle" could do that for T39 and later. But T28 is an older generation still. |
SuperMatz
Joined: Jan 30, 2007
Posts: 2
From: Sweden
PM |
I saw a page where some guy shorted the Yes button (power) on a T10 which gave the result that it would start up as soon as it got power. This however doesn't work on the T28 as it seems...
My last resort would be to pulse the button using the PIC.
I'll have to do some more testing on the phone to find out if there are any other possible solutions. |
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Posted: 2007-01-30 15:50
