Karosium

Huh.. I'm guessing you didn't succeed in r...

2012-01-09T08:26:01.542-08:00

Huh.. I'm guessing you didn't succeed in removing some of the solder bridges? Solder wick, xacto knife and magnifying glass would be my choice of tools for solving that. Also I'd try to use less solder for the initial soldering of the chip.

Hi, i am manufacturing the PCB's using iron an...

2012-01-05T21:04:07.464-08:00

Hi, i am manufacturing the PCB's using iron and beaching method,, the problem is when i measure the connectivity of the uMAX package using the buzzer of the ordinary AVOmeter, there is no connectivity between the pins and everything in ok, but after soldering the uMAX IC, the traces on the uMAX begin glittering (firing) when 5V is applied,,,
please help me...

Hi Viktor, First of all thanks for the answer. I ...

2011-10-19T15:07:48.090-07:00

Hi Viktor,

First of all thanks for the answer.
I did an error. I supposed that the serial pins on the fonera were having the +5v power pin, while that is +3,3...... and I used that to power the 2480... removed that it works fine.

Thanks again for your time.
L

Not even RedBoot? That's strange.. Did you try...

2011-10-19T04:05:27.151-07:00

Not even RedBoot? That's strange..
Did you try connecting a PC to the serial port to see what's going on (if anything) during the boot process when the 2408 is connected?
You could also check if changing the Redboot serial console baud rate in fconfig to something else changes anything.

Using lots of flux and dragging a blob of solder o...

2011-10-19T03:57:48.453-07:00

Using lots of flux and dragging a blob of solder over the pins. Solder-wick any excess or shorts, re-flux, re-heat check under magnifying glass, repeat until good then clean :) I also usually tin the pads with a used piece of solder-wick before starting. Good luck!

ciao Victor, sure I'm missing something, but ...

2011-10-17T13:47:40.500-07:00

ciao Victor,

sure I'm missing something, but if I connect my fonera to the DS2408, it won't boot.
If I connect that later it boots fine and everything works, but I caanot have that connected to have fonera booting.
I tried to see if I could get into redboot to see what was going on but it seems not even going into redboot.
any clue ?
Thanks very much
Luca

Hi I was wondering how you soldered the umax 8 to ...

2011-09-17T13:49:51.463-07:00

Hi I was wondering how you soldered the umax 8 to your breakout board. Any tricks? Thanks.

Don't really know. Reason I ended up building ...

2011-03-31T01:56:29.270-07:00

Don't really know. Reason I ended up building this is that I could get most parts for "free" or on the cheap so the whole thing didn't cost me very much. It's probably not worth building if you have to buy them all though. Better to just buy a good brand SMPS power brick instead.

What are the approximate component prices?

2011-03-31T01:18:42.028-07:00

What are the approximate component prices?

The bigger caps on the modules are 470uF, the smal...

2011-03-27T03:13:19.323-07:00

The bigger caps on the modules are 470uF, the smaller one on the 12v module is 100uF both Low-ESR versions. The SMD ceramics are 1uF but only because I couldn't get bigger ones locally. The setting resistors I don't really remember but example values are given in the datasheets for common voltages. The RIFA cap is 10000uF/63V but as noted this is overkill. The transformer was wound by an acquaintance of mine. Searching on your local (especially audio-related) DIY forums should turn up a few companies where they can be bought/made to order.

I was wondering what are the values of the capacit...

2011-03-26T18:55:41.667-07:00

I was wondering what are the values of the capacitors and the other components used? And also, where did you get the transformer?

Don't think anything open source can read Eagl...

2011-03-23T15:33:02.606-07:00

Don't think anything open source can read Eagle's files. They do have a Linux version though. Try cadsoft.de

I wonder if there is an Open Source App that will ...

2011-03-23T15:21:30.757-07:00

I wonder if there is an Open Source App that will read the .pro, .brd, sch files you uploaded? I couldn't find one in my Fedora 14 Repo's. I didn't look long though. I have K-Cad, KiCad, Gerbv file viewer etc... No luck with them.

Don

Glad to hear it! Well I'm not sure that I'...

2011-03-21T13:01:27.821-07:00

Glad to hear it! Well I'm not sure that I'll be able to help but feel free to send to the "random" address in the Contact sidebar on the right and I'll take a look at it when I have some time. Also if you have some pictures of your Compaq mod that I could add to the article It'd be much appreciated.

THANKS KAROSIUM / VIKTOR!!! I bought a $16.00 PSU ...

2011-03-21T12:38:04.621-07:00

THANKS KAROSIUM / VIKTOR!!!
I bought a $16.00 PSU and followed all your directions, and guess what? I am connected and writing to you from a Compaq EVO 510 sff and the better of all is that the new psu has a very small mobo and it fit perfectly into the original compaq psu case. The most problematic was to find the optocoupler, but I found one in an old Xerox Fax.
I enjoyed very much this project because I succeded. Now I would like to ask for your help with another project, it is a lab centrifuge that has a missing component in the mobo, it uses an ULN2803A to control 2 relays. Please let me know how can I send you the details of this centrifuge. Thank you very much and I hope that you can help me.

I haven't used any datasheet

2011-03-21T04:08:58.577-07:00

I haven't used any datasheet

Hey guy, can you put the link to the datasheet? I&...

2011-03-20T08:34:11.478-07:00

Hey guy, can you put the link to the datasheet? I'm crazy to use it!

No problem. Both are connected. One is on the inpu...

2011-03-04T13:49:31.277-08:00

No problem. Both are connected. One is on the input the other is on the output (see A I O markings on the PCB image). Eagle keeps track of the schematic when designing the board so they should be consistent even if it doesn't seem like it at first sight :)

On shematic and layout (first picture) you conecte...

2011-03-04T13:42:01.204-08:00

On shematic and layout (first picture) you conected C1 (100nF) on LM317, and on picture of finished board, C2(1uF) is conected on LM317?

P.S."Sorry for bad english"

Well done! Congrat! Is there something available o...

2011-02-19T06:00:33.710-08:00

Well done! Congrat!
Is there something available on the market that can heat the water in-pipe? I don't have access to entire PVC water tube (it is inside floor concrete) And would like to avoid freezing during winter. Here the coldest can be -25 degrees Celsius! I was thinking about installing a water heater with a 10' in-pipe heater just under the sink...Is this possible?

Well.. It's not a commercial product if that&#...

2011-02-10T23:44:19.811-08:00

Well.. It's not a commercial product if that's what you're asking. You could either find someone to make it for you or perhaps put it together on some veroboard?

where can i get this pcb in mumbai market can yo...

2011-02-10T23:39:10.569-08:00

where can i get this pcb in mumbai market
can you suggest?

Thank you very much Viktor ¡¡¡ I have an old Compa...

2010-12-09T09:55:36.809-08:00

Thank you very much Viktor ¡¡¡
I have an old Compaq that I want to rescue. With this tutorial I think that I can do it.

HP Premium Plus Satin-matt

2010-10-14T04:16:02.030-07:00

HP Premium Plus Satin-matt

May I what is the brand and name of the satin matt...

2010-10-13T12:40:45.292-07:00

May I what is the brand and name of the satin matt paper you use? I can't seems to find it.