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Quote:
Originally Posted by spivonious /forum/post/19267722


You won't blow anything up if you draw too much power. The worst that will happen is the computer will be unstable and shut down unexpectedly. With a 5450 and a lower-end CPU you should be fine.

Depends. The PicoPSU is fragile and prone to death by overheating.See http://www.avsforum.com/avs-vb/showt...1#post14803271 ...


Although my DG45FC based HTPC is running fine, I think I am going to replace it with an AMD Fusion based one - especially since the Zacate APU is supposed to have a TDP of 18W. This coupled with ~ 8W @ load for HDD and ~ 6W for a 4GB DDR3 DIMM, means that even at normal load for movie playback, the system should consume much less than 50W. What's really good is that it has a HD5000 class GPU that can run stuff like Media Player Home Cinema with GPU accelerated color correction. The onboard IGP on the DG45FC just doesn't cut it anymore
 

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Quote:
Originally Posted by harshw /forum/post/19480043


Depends. The PicoPSU is fragile and prone to death by overheating.See http://www.avsforum.com/avs-vb/showt...1#post14803271 ...

funny you brought this up. I just bought replacement 60W power brick for my picoPSU. It overheated a few times and the PC turned off and now it starts clicking when it gets hot and if i don't pull it out from behind the cabinet it will turn off. So it must be at the end of its life so i got a replacement brick for it. I think the actual picoPSU itself is ok though. I'm going on about 2 years with it now.
 

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Quote:
Originally Posted by rajdude /forum/post/19043373

Updated diagram:

I'm not a photoshop expert but here is it.

Basically, the two pins need to be reversed. This is ONLY if you get the IR IC which I used. Other ICs may be different. Check the datasheet.


I did this with just the TSOP (i.e. no resistor, no capacitor) and it works fine. Not being an electronics guy, is there any implication of not having those 2 components in the circuit?


On a related note, has anyone built the flash-back LED part of this circuit? It appears to be the VCC pin connected to a 330R resistor connected to the positive side of a LED and the negative side connected to the LED pin. I tried this, but it doesn't appear to work...
 

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Quote:
Originally Posted by rajdude /forum/post/19024882


Sure....Here is my little project's photos:


I used a USB internal header cable for this. I cut off one side and soldered the IC, resistor and the capacitor using only three wires.




closeup [before adding another hot shrink sleeve over all the soldered joints]




I drilled a small hole in the unused floppy bay's cover and hot glued this contraption to the back side. The hole matches the IR IC's tiny dome's circumference.


I was afraid that this may make the IR sensor less sensitive to off axis signals....but no! In my testing it works fine if I am holding the remote while standing in one side of the room.




Here is how it looks from the front:





Final product




It works 100% fine!

Even sleep from standby works reliably....something which never worked with the CIR thingy from meritline. and I think that was $30 or something.



total cost : 8 bucks + a couple of hrs of work [includes troubleshooting since it did not work at first [see my post above]. ..........out of which approx 6 was shipping. I did buy two pairs of each component, so I can use it in other HTPCs.


here is exactly what I ordered from Mouser:





If someone needs help with this project........I'd be glad to help. Just post here.

Can you relist what you purchased from Mouser ? The image links do not seem to be working.


Thanks,


Bryan
 

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ok, fixed the images on my server. Somehow they were missing! Had to re-upload.


I gotta stop linking images from my server. Just attach to the post at AVS and link it from there works better.



Interesting Note: I noticed that my CIR circuit starts up my machine even when it is turned off! No other IR reciever does that. I have the meritline internal, Dell and Microsoft's USB external ones.
 

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IMHO the resistor - capacitor is there only for filtering. It may work without it but there is some possibility of stray interference???...my electronics knowledge is getting rusty due to non-use.



By the flash back LED part........do you mean adding an LED to tell you if it actually recieved the IR signal?


No I have not done that. where is the ckt diagram for that?


Quote:
Originally Posted by ManbirPrihar /forum/post/19649912


I did this with just the TSOP (i.e. no resistor, no capacitor) and it works fine. Not being an electronics guy, is there any implication of not having those 2 components in the circuit?


On a related note, has anyone built the flash-back LED part of this circuit? It appears to be the VCC pin connected to a 330R resistor connected to the positive side of a LED and the negative side connected to the LED pin. I tried this, but it doesn't appear to work...
 

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Quote:
Originally Posted by rajdude
IMHO the resistor - capacitor is there only for filtering. It may work without it but there is some possibility of stray interference???...my electronics knowledge is getting rusty due to non-use.



By the flash back LED part........do you mean adding an LED to tell you if it actually recieved the IR signal?


No I have not done that. where is the ckt diagram for that?
Yes, a LED that flashes when the TSOP receives an IR signal.


I got the circuit diagram from the attached -- I can't remember the original source.

 

image.pdf 41.927734375k . file
 

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Quote:
Originally Posted by rajdude /forum/post/20085455


IMHO the resistor - capacitor is there only for filtering. It may work without it but there is some possibility of stray interference???...my electronics knowledge is getting rusty due to non-use.



By the flash back LED part........do you mean adding an LED to tell you if it actually recieved the IR signal?


No I have not done that. where is the ckt diagram for that?

The resistor capacitor on the TSOP circuit is for protection from power supply over voltage not for filtering of the IR signal. I have the data sheet in front of me.
 
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