Re: [Freevo-users] The breathing hard disk light
Karl Lattimer wrote: After sitting, almost transfixed on my mac's sleep light as it slowly rises and falls a little college electronics returned to me. ^^ HD LED |---||+ HD+ o--[ R ]--+ c|-+ |---|(-+ | HD- o--+ Now I'm pretty sure this is right, off the top of my head, and would relieve the headache a hard disk light in a freevo can cause. The only problem is I can't rightly remember the method of determining the values of R and c (my notes are long gone), I'll keep looking, and update as necessary and of course post a wiki. The thing is, what would be a good timing? Should we try and time it so our breathing comes in time with it as we watch a movie? Regards Karl, --- SF email is sponsored by - The IT Product Guide Read honest candid reviews on hundreds of IT Products from real users. Discover which products truly live up to the hype. Start reading now. http://ads.osdn.com/?ad_id=6595alloc_id=14396op=click ___ Freevo-users mailing list Freevo-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/freevo-users Sorry for the reply again but i have a better circuit. This provides a slow fade of the led during the off period of the hdd light The large C the slower the fade i recomend between 220 - 2200 uF the circuit is attached this works by when the hdd led is high (5v) then the capacitor charges. and aslo suplys the led. when the hdd led is off the capacitor discharges through the resistor and led.the 5v supply in the circuit is the hdd con on the mobo please note that with either circuit you could not get the led to flash and fade at a sett rate ie breathing Chris Ellis inline: ledfade.jpginline: ledfade.jpg
Re: [Freevo-users] The breathing hard disk light
Why not just unhook it :) Karl Lattimer wrote: After sitting, almost transfixed on my mac's sleep light as it slowly rises and falls a little college electronics returned to me. ^^ HD LED |---||+ HD+ o--[ R ]--+ c|-+ |---|(-+ | HD- o--+ Now I'm pretty sure this is right, off the top of my head, and would relieve the headache a hard disk light in a freevo can cause. The only problem is I can't rightly remember the method of determining the values of R and c (my notes are long gone), I'll keep looking, and update as necessary and of course post a wiki. The thing is, what would be a good timing? Should we try and time it so our breathing comes in time with it as we watch a movie? Regards Karl, --- SF email is sponsored by - The IT Product Guide Read honest candid reviews on hundreds of IT Products from real users. Discover which products truly live up to the hype. Start reading now. http://ads.osdn.com/?ad_id=6595alloc_id=14396op=click ___ Freevo-users mailing list Freevo-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/freevo-users --- SF email is sponsored by - The IT Product Guide Read honest candid reviews on hundreds of IT Products from real users. Discover which products truly live up to the hype. Start reading now. http://ads.osdn.com/?ad_id=6595alloc_id=14396op=click ___ Freevo-users mailing list Freevo-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/freevo-users
Re: [Freevo-users] The breathing hard disk light
AFAIK (my technical college time is 20 years behind me now) You need to feed a led with a current of aproximity 15 mA (should have to look a datasheets for this). Depending on the color of the led the tension could be in the neighbourhood of 1.2 V So the value of R would be R = (UHD - 1.2)/15 mA This are a few standard rules out of the head better values: http://www.kpsec.freeuk.com/components/led.htm You have to be aware of the following: UHD is the tension measured without charge (without led). The value of R can be a variable of the resistance of the power supply and the resistor you switch in serie For this reason R = R0 + R1 This diagram would be closer to the real world output ^^ HD LED |---||+ HD+ o--[ R0 ]--o---[R1]---+ c|-+ UHD0 UHD |---|(-+ | HD- o--o---+ R0: circuit uncharged: no led. UHD0: Voltage uncharged. 1) measure UHD0: uncharged 2) measure R0 For this we need one suplementary step: R' = UHD0/15mA We connect R' instead of the led and measure the voltage drop UHD' So R0 = (UHD0 -UHD')/15mA Now we have UHD0: The uncharged value of the led voltage R0: The own resistence of the power circuit Iled: The current trough the led (15mA) R = UHD0/Iled R1 = R -R0 Most circuitry has already it's own resistance R0, so it is possible you leave R1 = 0. Afterwards you need to determine the value of C As Chris Ellis pointed out: T = 2pi.rc or as most engineers use to calculate 6,25RC So the value of C must be much greater the the time in seconds it flickers C T/(6.25R) Karl Lattimer wrote: After sitting, almost transfixed on my mac's sleep light as it slowly rises and falls a little college electronics returned to me. ^^ HD LED |---||+ HD+ o--[ R ]--+ c|-+ |---|(-+ | HD- o--+ Now I'm pretty sure this is right, off the top of my head, and would relieve the headache a hard disk light in a freevo can cause. The only problem is I can't rightly remember the method of determining the values of R and c (my notes are long gone), I'll keep looking, and update as necessary and of course post a wiki. The thing is, what would be a good timing? Should we try and time it so our breathing comes in time with it as we watch a movie? Regards Karl, --- SF email is sponsored by - The IT Product Guide Read honest candid reviews on hundreds of IT Products from real users. Discover which products truly live up to the hype. Start reading now. http://ads.osdn.com/?ad_id=6595alloc_id=14396op=click ___ Freevo-users mailing list Freevo-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/freevo-users sorry for the second reply, I also should introduce myself a bit, i'am currenlt studding for a-levels and will be going to uni to studdy electronic engineering so are quite ok at electronics. I have put the circuit through so circuit modellign software I have and it did not seem to work. (this is not a 1005 accurate but i will also construct to have a look, it is an excellent IDEA. I think what we may need is a RC filter. --- SF email is sponsored by - The IT Product Guide Read honest candid reviews on hundreds of IT Products from real users. Discover which products truly live up to the hype. Start reading now. http://ads.osdn.com/?ad_id=6595alloc_id=14396op=click ___ Freevo-users mailing list Freevo-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/freevo-users -- This message has been scanned for viruses and dangerous content by OpenProtect(http://www.openprotect.com), and is believed to be clean. -- This message has been scanned for viruses and dangerous content by OpenProtect(http://www.openprotect.com), and is believed to be clean. --- SF email is sponsored by - The IT Product Guide Read honest candid reviews on hundreds of IT Products from real users. Discover which products truly live up to the hype. Start reading now. http://ads.osdn.com/?ad_id=6595alloc_id=14396op=click ___ Freevo-users mailing list Freevo-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/freevo-users
Re: [Freevo-users] The breathing hard disk light
Karl Lattimer wrote: After sitting, almost transfixed on my mac's sleep light as it slowly rises and falls a little college electronics returned to me. ^^ HD LED |---||+ HD+ o--[ R ]--+ c|-+ |---|(-+ | HD- o--+ Now I'm pretty sure this is right, off the top of my head, and would relieve the headache a hard disk light in a freevo can cause. The only problem is I can't rightly remember the method of determining the values of R and c (my notes are long gone), I'll keep looking, and update as necessary and of course post a wiki. The thing is, what would be a good timing? Should we try and time it so our breathing comes in time with it as we watch a movie? Regards Karl, --- SF email is sponsored by - The IT Product Guide Read honest candid reviews on hundreds of IT Products from real users. Discover which products truly live up to the hype. Start reading now. http://ads.osdn.com/?ad_id=6595alloc_id=14396op=click ___ Freevo-users mailing list Freevo-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/freevo-users Sorry for the reply again but i have the circuit working, ove a 9v battery but should work no probs off hdd light no mobo, R is 680 ohms and c is 2200 microfarads or 1000 microfarads depending on legth of fade. the high C the longer the fade Chris Ellis --- SF email is sponsored by - The IT Product Guide Read honest candid reviews on hundreds of IT Products from real users. Discover which products truly live up to the hype. Start reading now. http://ads.osdn.com/?ad_id=6595alloc_id=14396op=click ___ Freevo-users mailing list Freevo-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/freevo-users
Re: [Freevo-users] The breathing hard disk light
Geert Decorte wrote: AFAIK (my technical college time is 20 years behind me now) You need to feed a led with a current of aproximity 15 mA (should have to look a datasheets for this). Depending on the color of the led the tension could be in the neighbourhood of 1.2 V So the value of R would be R = (UHD - 1.2)/15 mA This are a few standard rules out of the head better values: http://www.kpsec.freeuk.com/components/led.htm You have to be aware of the following: UHD is the tension measured without charge (without led). The value of R can be a variable of the resistance of the power supply and the resistor you switch in serie For this reason R = R0 + R1 This diagram would be closer to the real world output ^^ HD LED |---||+ HD+ o--[ R0 ]--o---[R1]---+ c|-+ UHD0 UHD |---|(-+ | HD- o--o---+ R0: circuit uncharged: no led. UHD0: Voltage uncharged. 1) measure UHD0: uncharged 2) measure R0 For this we need one suplementary step: R' = UHD0/15mA We connect R' instead of the led and measure the voltage drop UHD' So R0 = (UHD0 -UHD')/15mA Now we have UHD0: The uncharged value of the led voltage R0: The own resistence of the power circuit Iled: The current trough the led (15mA) R = UHD0/Iled R1 = R -R0 Most circuitry has already it's own resistance R0, so it is possible you leave R1 = 0. Afterwards you need to determine the value of C As Chris Ellis pointed out: T = 2pi.rc or as most engineers use to calculate 6,25RC So the value of C must be much greater the the time in seconds it flickers C T/(6.25R) Karl Lattimer wrote: After sitting, almost transfixed on my mac's sleep light as it slowly rises and falls a little college electronics returned to me. ^^ HD LED |---||+ HD+ o--[ R ]--+ c|-+ |---|(-+ | HD- o--+ Now I'm pretty sure this is right, off the top of my head, and would relieve the headache a hard disk light in a freevo can cause. The only problem is I can't rightly remember the method of determining the values of R and c (my notes are long gone), I'll keep looking, and update as necessary and of course post a wiki. The thing is, what would be a good timing? Should we try and time it so our breathing comes in time with it as we watch a movie? Regards Karl, --- SF email is sponsored by - The IT Product Guide Read honest candid reviews on hundreds of IT Products from real users. Discover which products truly live up to the hype. Start reading now. http://ads.osdn.com/?ad_id=6595alloc_id=14396op=click ___ Freevo-users mailing list Freevo-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/freevo-users sorry for the second reply, I also should introduce myself a bit, i'am currenlt studding for a-levels and will be going to uni to studdy electronic engineering so are quite ok at electronics. I have put the circuit through so circuit modellign software I have and it did not seem to work. (this is not a 1005 accurate but i will also construct to have a look, it is an excellent IDEA. I think what we may need is a RC filter. --- SF email is sponsored by - The IT Product Guide Read honest candid reviews on hundreds of IT Products from real users. Discover which products truly live up to the hype. Start reading now. http://ads.osdn.com/?ad_id=6595alloc_id=14396op=click ___ Freevo-users mailing list Freevo-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/freevo-users -- This message has been scanned for viruses and dangerous content by OpenProtect(http://www.openprotect.com), and is believed to be clean. I must point out that T = RC not 2pi RC 2pi is used in the capacitor reactance formular but not in the timne perioc for a RC circuits Chris Ellis --- SF email is sponsored by - The IT Product Guide Read honest candid reviews on hundreds of IT Products from real users. Discover which products truly live up to the hype. Start reading now. http://ads.osdn.com/?ad_id=6595alloc_id=14396op=click ___ Freevo-users mailing list Freevo-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/freevo-users
Re: [Freevo-users] The breathing hard disk light
Is this a final breathing LED circuit? and i'll build it ;) Has aggreement been reached? Homage to apple, such a simple circuit, such simple idea's such ground breaking effects K, Chris Ellis wrote: Geert Decorte wrote: AFAIK (my technical college time is 20 years behind me now) You need to feed a led with a current of aproximity 15 mA (should have to look a datasheets for this). Depending on the color of the led the tension could be in the neighbourhood of 1.2 V So the value of R would be R = (UHD - 1.2)/15 mA This are a few standard rules out of the head better values: http://www.kpsec.freeuk.com/components/led.htm You have to be aware of the following: UHD is the tension measured without charge (without led). The value of R can be a variable of the resistance of the power supply and the resistor you switch in serie For this reason R = R0 + R1 This diagram would be closer to the real world output ^^ HD LED |---||+ HD+ o--[ R0 ]--o---[R1]---+ c|-+ UHD0 UHD |---|(-+ | HD- o--o---+ R0: circuit uncharged: no led. UHD0: Voltage uncharged. 1) measure UHD0: uncharged 2) measure R0 For this we need one suplementary step: R' = UHD0/15mA We connect R' instead of the led and measure the voltage drop UHD' So R0 = (UHD0 -UHD')/15mA Now we have UHD0: The uncharged value of the led voltage R0: The own resistence of the power circuit Iled: The current trough the led (15mA) R = UHD0/Iled R1 = R -R0 Most circuitry has already it's own resistance R0, so it is possible you leave R1 = 0. Afterwards you need to determine the value of C As Chris Ellis pointed out: T = 2pi.rc or as most engineers use to calculate 6,25RC So the value of C must be much greater the the time in seconds it flickers C T/(6.25R) Karl Lattimer wrote: After sitting, almost transfixed on my mac's sleep light as it slowly rises and falls a little college electronics returned to me. ^^ HD LED |---||+ HD+ o--[ R ]--+ c|-+ |---|(-+ | HD- o--+ Now I'm pretty sure this is right, off the top of my head, and would relieve the headache a hard disk light in a freevo can cause. The only problem is I can't rightly remember the method of determining the values of R and c (my notes are long gone), I'll keep looking, and update as necessary and of course post a wiki. The thing is, what would be a good timing? Should we try and time it so our breathing comes in time with it as we watch a movie? Regards Karl, --- SF email is sponsored by - The IT Product Guide Read honest candid reviews on hundreds of IT Products from real users. Discover which products truly live up to the hype. Start reading now. http://ads.osdn.com/?ad_id=6595alloc_id=14396op=click ___ Freevo-users mailing list Freevo-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/freevo-users sorry for the second reply, I also should introduce myself a bit, i'am currenlt studding for a-levels and will be going to uni to studdy electronic engineering so are quite ok at electronics. I have put the circuit through so circuit modellign software I have and it did not seem to work. (this is not a 1005 accurate but i will also construct to have a look, it is an excellent IDEA. I think what we may need is a RC filter. --- SF email is sponsored by - The IT Product Guide Read honest candid reviews on hundreds of IT Products from real users. Discover which products truly live up to the hype. Start reading now. http://ads.osdn.com/?ad_id=6595alloc_id=14396op=click ___ Freevo-users mailing list Freevo-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/freevo-users -- This message has been scanned for viruses and dangerous content by OpenProtect(http://www.openprotect.com), and is believed to be clean. I must point out that T = RC not 2pi RC 2pi is used in the capacitor reactance formular but not in the timne perioc for a RC circuits Chris Ellis --- SF email is sponsored by - The IT Product Guide Read honest candid reviews on hundreds of IT Products from real users. Discover which products truly live up to the hype. Start reading now. http://ads.osdn.com/?ad_id=6595alloc_id=14396op=click ___ Freevo-users mailing list Freevo-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/freevo-users --- SF email is sponsored by - The IT Product Guide Read honest candid reviews on hundreds of IT Products from real users. Discover which products truly live up to
Re: [Freevo-users] The breathing hard disk light
One question about the below circuit, how does the slow charge of the cap happen, the orignal point of putting the resistor before the cap was to have a slow increase and a slow decrease through the LED draining the power. if the cap has no resistance then won't it reach almost full charge of the cap instantly? Atleast thats what i think i was taught in college? Karl, Chris Ellis wrote: Karl Lattimer wrote: After sitting, almost transfixed on my mac's sleep light as it slowly rises and falls a little college electronics returned to me. ^^ HD LED |---||+ HD+ o--[ R ]--+ c|-+ |---|(-+ | HD- o--+ Now I'm pretty sure this is right, off the top of my head, and would relieve the headache a hard disk light in a freevo can cause. The only problem is I can't rightly remember the method of determining the values of R and c (my notes are long gone), I'll keep looking, and update as necessary and of course post a wiki. The thing is, what would be a good timing? Should we try and time it so our breathing comes in time with it as we watch a movie? Regards Karl, --- SF email is sponsored by - The IT Product Guide Read honest candid reviews on hundreds of IT Products from real users. Discover which products truly live up to the hype. Start reading now. http://ads.osdn.com/?ad_id=6595alloc_id=14396op=click ___ Freevo-users mailing list Freevo-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/freevo-users Sorry for the reply again but i have a better circuit. This provides a slow fade of the led during the off period of the hdd light The large C the slower the fade i recomend between 220 - 2200 uF the circuit is attached circuit this works by when the hdd led is high (5v) then the capacitor charges. and aslo suplys the led. when the hdd led is off the capacitor discharges through the resistor and led.the 5v supply in the circuit is the hdd con on the mobo please note that with either circuit you could not get the led to flash and fade at a sett rate ie breathing Chris Ellis --- SF email is sponsored by - The IT Product Guide Read honest candid reviews on hundreds of IT Products from real users. Discover which products truly live up to the hype. Start reading now. http://ads.osdn.com/?ad_id=6595alloc_id=14396op=click ___ Freevo-users mailing list Freevo-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/freevo-users
Re: [Freevo-users] The breathing hard disk light
Karl Lattimer wrote: Is this a final breathing LED circuit? and i'll build it ;) Has aggreement been reached? Homage to apple, such a simple circuit, such simple idea's such ground breaking effects K, Chris Ellis wrote: Geert Decorte wrote: AFAIK (my technical college time is 20 years behind me now) You need to feed a led with a current of aproximity 15 mA (should have to look a datasheets for this). Depending on the color of the led the tension could be in the neighbourhood of 1.2 V So the value of R would be R = (UHD - 1.2)/15 mA This are a few standard rules out of the head better values: http://www.kpsec.freeuk.com/components/led.htm You have to be aware of the following: UHD is the tension measured without charge (without led). The value of R can be a variable of the resistance of the power supply and the resistor you switch in serie For this reason R = R0 + R1 This diagram would be closer to the real world output ^^ HD LED |---||+ HD+ o--[ R0 ]--o---[R1]---+ c |-+ UHD0 UHD |---|(-+ | HD- o--o---+ R0: circuit uncharged: no led. UHD0: Voltage uncharged. 1) measure UHD0: uncharged 2) measure R0 For this we need one suplementary step: R' = UHD0/15mA We connect R' instead of the led and measure the voltage drop UHD' So R0 = (UHD0 -UHD')/15mA Now we have UHD0: The uncharged value of the led voltage R0: The own resistence of the power circuit Iled: The current trough the led (15mA) R = UHD0/Iled R1 = R -R0 Most circuitry has already it's own resistance R0, so it is possible you leave R1 = 0. Afterwards you need to determine the value of C As Chris Ellis pointed out: T = 2pi.rc or as most engineers use to calculate 6,25RC So the value of C must be much greater the the time in seconds it flickers C T/(6.25R) Karl Lattimer wrote: After sitting, almost transfixed on my mac's sleep light as it slowly rises and falls a little college electronics returned to me. ^^ HD LED |---||+ HD+ o--[ R ]--+ c |-+ |---|(-+ | HD- o--+ Now I'm pretty sure this is right, off the top of my head, and would relieve the headache a hard disk light in a freevo can cause. The only problem is I can't rightly remember the method of determining the values of R and c (my notes are long gone), I'll keep looking, and update as necessary and of course post a wiki. The thing is, what would be a good timing? Should we try and time it so our breathing comes in time with it as we watch a movie? Regards Karl, --- SF email is sponsored by - The IT Product Guide Read honest candid reviews on hundreds of IT Products from real users. Discover which products truly live up to the hype. Start reading now. http://ads.osdn.com/?ad_id=6595alloc_id=14396op=click ___ Freevo-users mailing list Freevo-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/freevo-users sorry for the second reply, I also should introduce myself a bit, i'am currenlt studding for a-levels and will be going to uni to studdy electronic engineering so are quite ok at electronics. I have put the circuit through so circuit modellign software I have and it did not seem to work. (this is not a 1005 accurate but i will also construct to have a look, it is an excellent IDEA. I think what we may need is a RC filter. --- SF email is sponsored by - The IT Product Guide Read honest candid reviews on hundreds of IT Products from real users. Discover which products truly live up to the hype. Start reading now. http://ads.osdn.com/?ad_id=6595alloc_id=14396op=click ___ Freevo-users mailing list Freevo-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/freevo-users
Re: [Freevo-users] The breathing hard disk light
On Mon, 11 Apr 2005 17:14:14 +0100 Karl Lattimer [EMAIL PROTECTED] wrote: Is this a final breathing LED circuit? and i'll build it ;) Has aggreement been reached? Homage to apple, such a simple circuit, such simple idea's such ground breaking effects My Toshiba laptop had a 'breathing LED' in it's sleep mode years before Apple used them. --- SF email is sponsored by - The IT Product Guide Read honest candid reviews on hundreds of IT Products from real users. Discover which products truly live up to the hype. Start reading now. http://ads.osdn.com/?ad_id=6595alloc_id=14396op=click ___ Freevo-users mailing list Freevo-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/freevo-users
Re: [Freevo-users] The breathing hard disk light
Karl Lattimer wrote: One question about the below circuit, how does the slow charge of the cap happen, the orignal point of putting the resistor before the cap was to have a slow increase and a slow decrease through the LED draining the power. if the cap has no resistance then won't it reach almost full charge of the cap instantly? Atleast thats what i think i was taught in college? Karl, Chris Ellis wrote: Karl Lattimer wrote: After sitting, almost transfixed on my mac's sleep light as it slowly rises and falls a little college electronics returned to me. ^^ HD LED |---||+ HD+ o--[ R ]--+ c|-+ |---|(-+ | HD- o--+ Now I'm pretty sure this is right, off the top of my head, and would relieve the headache a hard disk light in a freevo can cause. The only problem is I can't rightly remember the method of determining the values of R and c (my notes are long gone), I'll keep looking, and update as necessary and of course post a wiki. The thing is, what would be a good timing? Should we try and time it so our breathing comes in time with it as we watch a movie? Regards Karl, --- SF email is sponsored by - The IT Product Guide Read honest candid reviews on hundreds of IT Products from real users. Discover which products truly live up to the hype. Start reading now. http://ads.osdn.com/?ad_id=6595alloc_id=14396op=click ___ Freevo-users mailing list Freevo-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/freevo-users Sorry for the reply again but i have a better circuit. This provides a slow fade of the led during the off period of the hdd light The large C the slower the fade i recomend between 220 - 2200 uF the circuit is attached circuit this works by when the hdd led is high (5v) then the capacitor charges. and aslo suplys the led. when the hdd led is off the capacitor discharges through the resistor and led.the 5v supply in the circuit is the hdd con on the mobo please note that with either circuit you could not get the led to flash and fade at a sett rate ie breathing Chris Ellis --- SF email is sponsored by - The IT Product Guide Read honest candid reviews on hundreds of IT Products from real users. Discover which products truly live up to the hype. Start reading now. http://ads.osdn.com/?ad_id=6595alloc_id=14396op=click ___ Freevo-users mailing list Freevo-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/freevo-users This is difffernet to your orginal circuit. the orginal was a RC filter that just lengthened the pluse fro mthe hdd led as essential it is a square wave. i built it a tested it but found that it faded on but not off (recall from meory of yesterday lol) so i bult the other circuit that when the hdd light is on charges up the capacitor which then slowly discharges through the led when the hdd led is off. Either circuit would work it just depends on how you want the led to fade / flash. I did in a post post RC values for the orginal circuit i believe it was r= 680 ohms c= 220uf remebem that r can not be to large as it will dim the led. just remeber that the timer preriod RC needs to be much greater the the Time period of the effective square wave on the HDD led pin which for mine was arounf 0.5 second when in use play music etc. but it you T is say 1S then you will need C =4700uf. My other circuit did not use such a large capacitor which was one of the main reasons i though it was better as capcitor over 1000uf can be arounf 15mm - 25mm diameter Chris Ellis --- SF email is sponsored by - The IT Product Guide Read honest candid reviews on hundreds of IT Products from real users. Discover which products truly live up to the hype. Start reading now. http://ads.osdn.com/?ad_id=6595alloc_id=14396op=click ___ Freevo-users mailing list Freevo-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/freevo-users
Re: [Freevo-users] The breathing hard disk light
Chris Ellis wrote: Karl Lattimer wrote: One question about the below circuit, how does the slow charge of the cap happen, the orignal point of putting the resistor before the cap was to have a slow increase and a slow decrease through the LED draining the power. if the cap has no resistance then won't it reach almost full charge of the cap instantly? Atleast thats what i think i was taught in college? Karl, Chris Ellis wrote: Karl Lattimer wrote: After sitting, almost transfixed on my mac's sleep light as it slowly rises and falls a little college electronics returned to me. ^^ HD LED |---||+ HD+ o--[ R ]--+ c|-+ |---|(-+ | HD- o--+ Now I'm pretty sure this is right, off the top of my head, and would relieve the headache a hard disk light in a freevo can cause. The only problem is I can't rightly remember the method of determining the values of R and c (my notes are long gone), I'll keep looking, and update as necessary and of course post a wiki. The thing is, what would be a good timing? Should we try and time it so our breathing comes in time with it as we watch a movie? Regards Karl, --- SF email is sponsored by - The IT Product Guide Read honest candid reviews on hundreds of IT Products from real users. Discover which products truly live up to the hype. Start reading now. http://ads.osdn.com/?ad_id=6595alloc_id=14396op=click ___ Freevo-users mailing list Freevo-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/freevo-users Sorry for the reply again but i have a better circuit. This provides a slow fade of the led during the off period of the hdd light The large C the slower the fade i recomend between 220 - 2200 uF the circuit is attached circuit this works by when the hdd led is high (5v) then the capacitor charges. and aslo suplys the led. when the hdd led is off the capacitor discharges through the resistor and led.the 5v supply in the circuit is the hdd con on the mobo please note that with either circuit you could not get the led to flash and fade at a sett rate ie breathing Chris Ellis --- SF email is sponsored by - The IT Product Guide Read honest candid reviews on hundreds of IT Products from real users. Discover which products truly live up to the hype. Start reading now. http://ads.osdn.com/?ad_id=6595alloc_id=14396op=click ___ Freevo-users mailing list Freevo-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/freevo-users This is difffernet to your orginal circuit. the orginal was a RC filter that just lengthened the pluse fro mthe hdd led as essential it is a square wave. i built it a tested it but found that it faded on but not off (recall from meory of yesterday lol) so i bult the other circuit that when the hdd light is on charges up the capacitor which then slowly discharges through the led when the hdd led is off. Either circuit would work it just depends on how you want the led to fade / flash. I did in a post post RC values for the orginal circuit i believe it was r= 680 ohms c= 220uf remebem that r can not be to large as it will dim the led. just remeber that the timer preriod RC needs to be much greater the the Time period of the effective square wave on the HDD led pin which for mine was arounf 0.5 second when in use play music etc. but it you T is say 1S then you will need C =4700uf. My other circuit did not use such a large capacitor which was one of the main reasons i though it was better as capcitor over 1000uf can be arounf 15mm - 25mm diameter Chris Ellis --- SF email is sponsored by - The IT Product Guide Read honest candid reviews on hundreds of IT Products from real users. Discover which products truly live up to the hype. Start reading now. http://ads.osdn.com/?ad_id=6595alloc_id=14396op=click ___ Freevo-users mailing list Freevo-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/freevo-users Fair comment ;) Are you drunk/stoned coz i'm a bit stoned and i could understand that ;) tpoy --- SF email is sponsored by - The IT Product Guide Read honest candid reviews on hundreds of IT Products from real users. Discover which products truly live up to the hype. Start reading now. http://ads.osdn.com/?ad_id=6595alloc_id=14396op=click ___ Freevo-users mailing list Freevo-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/freevo-users
Re: [Freevo-users] The breathing hard disk light
Karl Lattimer wrote: After sitting, almost transfixed on my mac's sleep light as it slowly rises and falls a little college electronics returned to me. ^^ HD LED |---||+ HD+ o--[ R ]--+ c|-+ |---|(-+ | HD- o--+ Now I'm pretty sure this is right, off the top of my head, and would relieve the headache a hard disk light in a freevo can cause. The only problem is I can't rightly remember the method of determining the values of R and c (my notes are long gone), I'll keep looking, and update as necessary and of course post a wiki. The thing is, what would be a good timing? Should we try and time it so our breathing comes in time with it as we watch a movie? Regards Karl, --- SF email is sponsored by - The IT Product Guide Read honest candid reviews on hundreds of IT Products from real users. Discover which products truly live up to the hype. Start reading now. http://ads.osdn.com/?ad_id=6595alloc_id=14396op=click ___ Freevo-users mailing list Freevo-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/freevo-users the time constant for a capacitor charging through a resistor is simple T = RC. T is the time it takes a capacitor discharging through a ressitor to reach 37% of the suppy it was charged to so in charging this is to 63% of the supply voltages. To completely charge / discharge it is 5RC Chrisa Ellis --- SF email is sponsored by - The IT Product Guide Read honest candid reviews on hundreds of IT Products from real users. Discover which products truly live up to the hype. Start reading now. http://ads.osdn.com/?ad_id=6595alloc_id=14396op=click ___ Freevo-users mailing list Freevo-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/freevo-users
