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Old 12th April 2011, 05:41 PM   #11
gethin is offline gethin  Canada
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add me to the list maxw! Do you sell the board?
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Old 12th April 2011, 09:38 PM   #12
maxw is offline maxw  United Kingdom
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Quote:
Originally Posted by Lorenzo86 View Post
maxw, could you provide us the schematics? I'm very interested too!
Sure, here is my schematic:
Click the image to open in full size.

Quote:
Originally Posted by gethin View Post
add me to the list maxw! Do you sell the board?
I still have that one in the photo if you want to buy it, I don't think I'm using it. I also have a few spare boards if people are interested
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Old 11th September 2012, 12:25 PM   #13
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Default Hi Fellow Melboune arduino hackers...

ialpha, did you ever get this working?

I want to make a networked pre-amp volume control for my house audio sysystem and this fits the bill. will feed some sure tk2050 amps.

I would really appreciate it if you could let me know where you got and share any of your code/circuits.

I am also in Melb. so happy to catch up in person if that suits....and buy you a beer or 3

cheers.
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Old 4th October 2012, 07:13 PM   #14
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Quote:
Originally Posted by maxw View Post
Sure, here is my schematic:
Click the image to open in full size.


I still have that one in the photo if you want to buy it, I don't think I'm using it. I also have a few spare boards if people are interested
MAXW - Couple follow up questions. First, do you have any more spare boards? Second, is there a reason you chose the PGA2310 over the PGA2311? 11 looks to be almost identical except instead of requiring +/-15V analog volts, it only requires +/-5V, which seems easier to come by since Arduino is powered by +5V and the digital voltage of the PGA231X is +5V. If the 2311 would work, would it be possible to drop it in the socket instead of the PGA2310 on your board, with a few modifications to the power supply?
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Old 5th October 2012, 02:50 PM   #15
maxw is offline maxw  United Kingdom
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Originally Posted by bwshockley View Post
MAXW - Couple follow up questions. First, do you have any more spare boards? Second, is there a reason you chose the PGA2310 over the PGA2311? 11 looks to be almost identical except instead of requiring +/-15V analog volts, it only requires +/-5V, which seems easier to come by since Arduino is powered by +5V and the digital voltage of the PGA231X is +5V. If the 2311 would work, would it be possible to drop it in the socket instead of the PGA2310 on your board, with a few modifications to the power supply?
Yes I have many spare boards, I can send you some for the cost of postage if you wish.

I chose PGA2310 as due to having high supply rails and therefore greater voltage swing or headroom. It is the more popular chip. But to be honest I don't think it makes much difference in reality. The board would be easily adapted to use the PGA2311 if you join a few links but you would still need to supply the negative rail
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