beta22 Build - Page 5

thefragger · 13th November 2011, 02:58 PM

Awesome, k... I may write my own code just for fun.

Relay attenuator vs. PGA2310 is what I'm thinking about now.

linuxworks · 13th November 2011, 03:04 PM

I am developing for pga right now and plan to bring a product to market with pga and other goodies. the relays are higher performance but chattery and some people don't like that relay noise on 'run-up'. but the relay solution is going to be more 'pure' than the solid state op-amp based pga engine.

in fact, the lcduino 1.0 code works out of the box with either relays (latching) or pga. its not 'supported' as there is no official pga kit (yet) but the code is there and works and I use it every day for my pga builds.

thefragger · 13th November 2011, 10:42 PM

Well, that's interesting... apparently back in 2008 I ordered a couple PGA2310 samples from TI! I gotta dig those out and see what I can do with my Arduino.

Still need a rotary encoder, I guess... two momentary buttons for now!

linuxworks · 13th November 2011, 11:02 PM

if you use the analog-in of the arduino, you can use a linear pot as a 'valuator'. or a motor pot if you want to get fancy.

lately, I'm playing with rotaries and while they are harder to read vs the analog pot, they are more 'expected' as a modern vol control input device. some rotaries also have built in buttons and arrow keys (like an ipod wheel, sort of). lots of fun doing UI code for those

some 2310's from 2008, eh? you should check the freshness label, they might be stale by now (lol). j/k

13th November 2011, 03:04 PM	#42
linuxworks diyAudio Member Join Date: Jul 2008 Location: santa clara, CA	I am developing for pga right now and plan to bring a product to market with pga and other goodies. the relays are higher performance but chattery and some people don't like that relay noise on 'run-up'. but the relay solution is going to be more 'pure' than the solid state op-amp based pga engine. in fact, the lcduino 1.0 code works out of the box with either relays (latching) or pga. its not 'supported' as there is no official pga kit (yet) but the code is there and works and I use it every day for my pga builds. __________________ My Photostream:http://www.flickr.com/photos/linux-works/

13th November 2011, 11:02 PM	#44
linuxworks diyAudio Member Join Date: Jul 2008 Location: santa clara, CA	if you use the analog-in of the arduino, you can use a linear pot as a 'valuator'. or a motor pot if you want to get fancy. lately, I'm playing with rotaries and while they are harder to read vs the analog pot, they are more 'expected' as a modern vol control input device. some rotaries also have built in buttons and arrow keys (like an ipod wheel, sort of). lots of fun doing UI code for those some 2310's from 2008, eh? you should check the freshness label, they might be stale by now (lol). j/k __________________ My Photostream:http://www.flickr.com/photos/linux-works/

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13th November 2011, 02:58 PM	#41
thefragger diyAudio Member Join Date: Dec 2008 Location: Toronto, Canada	Awesome, k... I may write my own code just for fun. Relay attenuator vs. PGA2310 is what I'm thinking about now.

13th November 2011, 10:42 PM	#43
thefragger diyAudio Member Join Date: Dec 2008 Location: Toronto, Canada	Well, that's interesting... apparently back in 2008 I ordered a couple PGA2310 samples from TI! I gotta dig those out and see what I can do with my Arduino. Still need a rotary encoder, I guess... two momentary buttons for now!

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