infra_red_dude
Wire muncher!
sabr karo bhaiyaa... haf some patience....
Anyone knowing electronics please help me..
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ranjan2001
Cyborg Agent
& in the process expect few more wonders to happen & everyone wakes up wonder what happens in the room daily at 2AM................................LOL
Seems a perfect plot for those cartoon films.
Seems a perfect plot for those cartoon films.
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chesss
mera kutch nahi ho sakta
Have you tried using task schedular to 'wake' windows from hibernation/standby?
Even if your mobo doesn't support automatic booting, you should be able to wake your pc from standby at the very least.
Also try his *wakeuponstandby.www-dennisbabkin-com.qarchive.org/
Even if your mobo doesn't support automatic booting, you should be able to wake your pc from standby at the very least.
Also try his *wakeuponstandby.www-dennisbabkin-com.qarchive.org/
sashijoseph
In the zone
OK here's a cooked up schematic.The frontend uses the audio detector of the EFY wala circuit,which is followed by a one-shot.
Pin2 of the 555 needs to go down to atleast 1/3rd Vcc for the trigger to work.When the transistor is switched on by the buzzer,it should pull pin2 to near-ground and hence the trigger should work giving a 0.5sec(determined by R1&C1) shot at pin3 to which a relay is connected.
Use a small 6V pcb-mount type relay,cause the 555 can source only around 200ma.
Pin2 of the 555 needs to go down to atleast 1/3rd Vcc for the trigger to work.When the transistor is switched on by the buzzer,it should pull pin2 to near-ground and hence the trigger should work giving a 0.5sec(determined by R1&C1) shot at pin3 to which a relay is connected.
Use a small 6V pcb-mount type relay,cause the 555 can source only around 200ma.
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infra_red_dude
Wire muncher!
hey one easier thing than this wud be wake on usb. hey ajay does the bios support Wake on USB feature?
sashijoseph
In the zone
^ But then how would you trigger the wake-on function.He needs to power up automatically,doesn't he?Or am I mising sth?
infra_red_dude
Wire muncher!
idea is this: keep the computer on standby. then connect a "sacrificed usb device" - mebbe a cheap mouse. cut the Vcc wire (out of the 4). wire it up to a relay, relay is triggered by the IC555 astable circuit after a set interval. when triggered the relay shorts the cut ends of Vcc and the usb device gets connects permanently until manually unpluged and the comp. turns on due to wake on usb or something (i'm not sure how wake on usb works, so correct me if i'm wrong)
infra_red_dude
Wire muncher!
plz post the chipset, make and model no. we may well find a bios update for that.
infra_red_dude
Wire muncher!
hey if i'm not wrong it supports wake on usb. u need to enable it by changing a jumper i guess.dig out the manual.
sashijoseph
In the zone
Wake-on-usb doesn't work with any&every usb device even if the system(bios) supports wake-on-usb.
It depends on whether the device is capable of generating a wake-up event(for itself and the system) from a particular sleep state into which it goes during standby.Not all devices are capable of this.
Moreover the wakeup signal is typically a normal service event generated by the device.For eg a keypress event for a keyboard,a mouseclick event for a usb mouse or a cd-eject for a usb cdrom drive.Thus flash drives etc won't work.
So cutting the Vcc trick won't work.Instead use the relay to connect the contacts of the microswitch in the mouse which you click.However first verify whether the mouse supports the wake on thing...that is assuming your motherboard supports it in the 1st place.
But the better option would be to try out the circuit I posted.Moreover it doesn't need the system to be in standby mode.
It depends on whether the device is capable of generating a wake-up event(for itself and the system) from a particular sleep state into which it goes during standby.Not all devices are capable of this.
Moreover the wakeup signal is typically a normal service event generated by the device.For eg a keypress event for a keyboard,a mouseclick event for a usb mouse or a cd-eject for a usb cdrom drive.Thus flash drives etc won't work.
So cutting the Vcc trick won't work.Instead use the relay to connect the contacts of the microswitch in the mouse which you click.However first verify whether the mouse supports the wake on thing...that is assuming your motherboard supports it in the 1st place.
But the better option would be to try out the circuit I posted.Moreover it doesn't need the system to be in standby mode.
infra_red_dude
Wire muncher!
^^^ ok, i've never used wake on usb. didn't know that jus connecting the usb mouse to the port won't wake the comp. up. so i suggested stripping the Vcc cable. thanks for the info joseph 
edit: i went thru the circuit, joseph. thats a straightforward ckt but hey where will we get an alarm clock wid an output jack?
edit: i went thru the circuit, joseph. thats a straightforward ckt
but hey where will we get an alarm clock wid an output jack?
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sashijoseph
In the zone
Well we won't find an alaarm clock with audio jack readily(if at all).So you'll have to open up and tap it from the clock's buzzer.
infra_red_dude
Wire muncher!
rather... its jus that the alarm clock is used to adjust the time which triggers the 555 ckt. how about using a simple counter in its place?
infra_red_dude
Wire muncher!
^^^ then how will he get an opportunity to learn things??? these are small things in life but when u succeed in them, they give you more pleasure and satisfaction than many other things
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