Anybody make PCB's?

littlerick · 11th December 2009, 01:24 PM

I need a PCB and have no idea where to start.. Does anybody make them here and if so would it be possible to get something like...

http://www.analog.com/static/importe...0_ADAU1592.pdf

I'm not sure if anything needs changing to make a usable amp, but I got 2 adau1590's for free.

PM me with price details if its possible.

h_a · 11th December 2009, 03:48 PM

Maybe you can order the evaluation board from Analog?

I don't see much motivation for people to spend hours doing pcb-artwork for a rather mediocre consumer-ClassD-amp - I mean hey THD+N for 1W at -85dB...

Also pcbs for which only 2 pieces are produced cost really a lot of money, say 100$ at a guess.

Have fun, Hannes

ikoflexer · 11th December 2009, 04:03 PM

There's a significant effort in making the pcb and then making it work. I got this thing

2*15 watt @ 4ohm, TA2024 D-class Audio Amplifier Board on eBay.ca (item 120501954128 end time 11-Dec-09 20:00:43 EST)

the other day for $20 free shipping and it came as a complete kit. I didn't need it but was just curious; I was surprised by the nice sound.

However, if you want to make it as an educational exercise, you might want to pick something easier.

littlerick · 11th December 2009, 04:41 PM

lol c'mon guys i got the chips for free and im like a blind man in a glass shop with this electronic stuff. I'm just trying to educate myself a little.

If its to hard to do or it'll sound crap its not a problem. I havnt lost anything. I'm sure all the guys here who are experts, at some point built usless crap sounding stuff as part of learning.

cuibono · 11th December 2009, 04:51 PM

I make my own PCBs. The one you have posted is a 4 layer pcb, which is practically impossible to do at home. More than extremely difficult. 2 layer is the max for me, and it is a big pain in the butt to do well. I would guess that to have the above board made professionally would be fairly expensive.

I totally understand about wanting to learn, but this is the wrong place to start. Do a GC chip amp, way easier - especially if you start with a kit. Kits will make learning a lot easier.

littlerick · 11th December 2009, 06:07 PM

Yes, I have a kit a LM4780 from audiosector.. great kit. I am just surfing and coming across stuff as I go. I will be doing more kits when funds and the wife allow it.

I just cant resist the "get a free sample" button when I hit a website. I have a few more bits coming too, not sure what it is till it gets here, and probably still be confused when it does.

theAnonymous1 · 11th December 2009, 06:53 PM

Free ≠ Practical.

tomchr · 11th December 2009, 07:05 PM

I've used Olimex for PCB fabrication. It's not a super high-end facility so their technology is a bit limited by modern standards. But for hobby stuff that you will solder by hand, they're fine. If you need the micro vias, etc. for BGA's or uSMD you need to spend much more money.

To use Olimex and other PCB fab houses, you need a Gerber or Eagle file output. I think there are some software packages out there that are reasonably priced. Eagle being one of them. Last I checked it wasn't the most intuitive product to use but it gets the job done.

Another service is Express PCB. They provide you with free software, but you have to use their service to get the boards made.

If this is your first board, I will second the opinions of getting a "normal" amp going first then venture into the more exotic switchmode amps. High-performance analog layout is not just "connect the dots". There's more to it than that.

~Tom

littlerick · 11th December 2009, 08:47 PM

I think I agree with you, like I say i'm just getting into it and am at the early stage of learning.. I will do more of the kits available here in time, I just figure learning for as little cash as possible as blowing a few kits can get costly. Hoping I dont blow any but ya never know.

However advice taken... Kit to advanced for me at this moment in time. Thank you

neutron7 · 12th December 2009, 02:29 AM

The free chip is nice and all but supporting it is the work. especially since that board uses SMD components which may not be the best thing to do at a first attempt, if you want a simple cheap and likely to work amplifier, for probably less than all those inductors and the board and all your aggravation
something like the chipamp.com LM1875 kits might be a good place to start.
DIY Chip Amplifier Kits, PCB's, Components and Information.

11th December 2009, 01:24 PM	#1
littlerick diyAudio Member Join Date: Nov 2009 Location: Lincolnshire UK	Anybody make PCB's? I need a PCB and have no idea where to start.. Does anybody make them here and if so would it be possible to get something like... http://www.analog.com/static/importe...0_ADAU1592.pdf I'm not sure if anything needs changing to make a usable amp, but I got 2 adau1590's for free. PM me with price details if its possible.

11th December 2009, 04:51 PM	#5
cuibono diyAudio Member Join Date: May 2006 Location: City of Angles	I make my own PCBs. The one you have posted is a 4 layer pcb, which is practically impossible to do at home. More than extremely difficult. 2 layer is the max for me, and it is a big pain in the butt to do well. I would guess that to have the above board made professionally would be fairly expensive. I totally understand about wanting to learn, but this is the wrong place to start. Do a GC chip amp, way easier - especially if you start with a kit. Kits will make learning a lot easier. __________________ double complete rainbow all the way!!

11th December 2009, 06:53 PM	#7
theAnonymous1 diyAudio Member Join Date: Feb 2004 Location: Anonymityville	Free ≠ Practical. __________________ "If you don't like funerals don't kick sand in Ninja's face." - Ninja

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11th December 2009, 03:48 PM	#2
h_a diyAudio Member Join Date: Sep 2006 Location: Graz, Austria	Maybe you can order the evaluation board from Analog? I don't see much motivation for people to spend hours doing pcb-artwork for a rather mediocre consumer-ClassD-amp - I mean hey THD+N for 1W at -85dB... Also pcbs for which only 2 pieces are produced cost really a lot of money, say 100$ at a guess. Have fun, Hannes

11th December 2009, 04:03 PM	#3
ikoflexer diyAudio Moderator Join Date: May 2008 Location: Toronto	There's a significant effort in making the pcb and then making it work. I got this thing 2*15 watt @ 4ohm, TA2024 D-class Audio Amplifier Board on eBay.ca (item 120501954128 end time 11-Dec-09 20:00:43 EST) the other day for $20 free shipping and it came as a complete kit. I didn't need it but was just curious; I was surprised by the nice sound. However, if you want to make it as an educational exercise, you might want to pick something easier.

11th December 2009, 04:41 PM	#4
littlerick diyAudio Member Join Date: Nov 2009 Location: Lincolnshire UK	lol c'mon guys i got the chips for free and im like a blind man in a glass shop with this electronic stuff. I'm just trying to educate myself a little. If its to hard to do or it'll sound crap its not a problem. I havnt lost anything. I'm sure all the guys here who are experts, at some point built usless crap sounding stuff as part of learning.

11th December 2009, 06:07 PM	#6
littlerick diyAudio Member Join Date: Nov 2009 Location: Lincolnshire UK	Yes, I have a kit a LM4780 from audiosector.. great kit. I am just surfing and coming across stuff as I go. I will be doing more kits when funds and the wife allow it. I just cant resist the "get a free sample" button when I hit a website. I have a few more bits coming too, not sure what it is till it gets here, and probably still be confused when it does.

11th December 2009, 07:05 PM	#8
tomchr diyAudio Member Join Date: Feb 2009 Location: Greater Seattle Area	I've used Olimex for PCB fabrication. It's not a super high-end facility so their technology is a bit limited by modern standards. But for hobby stuff that you will solder by hand, they're fine. If you need the micro vias, etc. for BGA's or uSMD you need to spend much more money. To use Olimex and other PCB fab houses, you need a Gerber or Eagle file output. I think there are some software packages out there that are reasonably priced. Eagle being one of them. Last I checked it wasn't the most intuitive product to use but it gets the job done. Another service is Express PCB. They provide you with free software, but you have to use their service to get the boards made. If this is your first board, I will second the opinions of getting a "normal" amp going first then venture into the more exotic switchmode amps. High-performance analog layout is not just "connect the dots". There's more to it than that. ~Tom

11th December 2009, 08:47 PM	#9
littlerick diyAudio Member Join Date: Nov 2009 Location: Lincolnshire UK	I think I agree with you, like I say i'm just getting into it and am at the early stage of learning.. I will do more of the kits available here in time, I just figure learning for as little cash as possible as blowing a few kits can get costly. Hoping I dont blow any but ya never know. However advice taken... Kit to advanced for me at this moment in time. Thank you

12th December 2009, 02:29 AM	#10
neutron7 diyAudio Member Join Date: Dec 2003 Location: Toronto Canada	The free chip is nice and all but supporting it is the work. especially since that board uses SMD components which may not be the best thing to do at a first attempt, if you want a simple cheap and likely to work amplifier, for probably less than all those inductors and the board and all your aggravation something like the chipamp.com LM1875 kits might be a good place to start. DIY Chip Amplifier Kits, PCB's, Components and Information.

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