Atom Feed - Twisted Pear Audio Support - Topic:Volumite with Dual Mono Opus - 20Twisted Pear Audio Support - Atom Feedurn:twistedpearaudio-com:AtomFeed:TwistedPearAudioSupport:Topic:VolumitewithDualMonoOpus-20:1Copyright 2024 Twisted Pear Audio Support2024-03-29T14:09:22Zhttp://www.twistedpearaudio.com/forum/Images/YAFLogo.pngForum Adminhttp://www.twistedpearaudio.comfeedback@twistedpearaudio.comjanos_904http://www.twistedpearaudio.com/forum/profile/5476-janos-904janos_904http://www.twistedpearaudio.com/forum/profile/5476-janos-904panordhttp://www.twistedpearaudio.com/forum/profile/837-panordBrian Doneganhttp://www.twistedpearaudio.com/forum/profile/8-Brian-Doneganpanordhttp://www.twistedpearaudio.com/forum/profile/837-panordBrian Doneganhttp://www.twistedpearaudio.com/forum/profile/8-Brian-Doneganglthttp://www.twistedpearaudio.com/forum/profile/168-gltpanordhttp://www.twistedpearaudio.com/forum/profile/837-panordRuss Whitehttp://www.twistedpearaudio.com/forum/profile/9-Russ-Whitepanordhttp://www.twistedpearaudio.com/forum/profile/837-panordRuss Whitehttp://www.twistedpearaudio.com/forum/profile/9-Russ-Whitepanordhttp://www.twistedpearaudio.com/forum/profile/837-panordBrian Doneganhttp://www.twistedpearaudio.com/forum/profile/8-Brian-Doneganpanordhttp://www.twistedpearaudio.com/forum/profile/837-panordRuss Whitehttp://www.twistedpearaudio.com/forum/profile/9-Russ-Whitepanordhttp://www.twistedpearaudio.com/forum/profile/837-panordRuss Whitehttp://www.twistedpearaudio.com/forum/profile/9-Russ-Whitepanordhttp://www.twistedpearaudio.com/forum/profile/837-panordpanordhttp://www.twistedpearaudio.com/forum/profile/837-panordBrian Doneganhttp://www.twistedpearaudio.com/forum/profile/8-Brian-Doneganpanordhttp://www.twistedpearaudio.com/forum/profile/837-panordYetAnotherForum.NETurn:twistedpearaudio-com:ftPosts:st1:meid18463:1Volumite with Dual Mono Opus<table class="content postContainer_Alt" width="100%"><tr><td>Hi panord, did you solve your problem? I took a look at your very 1st picture. I think, your wireing isn't good. To get volumite to work, I guess You need to wire the power supply GRND to volumite GRND as well. Cheers, János</td></tr></table>2013-02-23T12:29:38-07:002013-02-23T12:29:38-07:00janos_904<table class="content postContainer_Alt" width="100%"><tr><td>Hi panord, did you solve your problem? I took a look at your very 1st picture. I think, your wireing isn't good. To get volumite to work, I guess You need to wire the power supply GRND to volumite GRND as well. Cheers, János</td></tr></table>urn:twistedpearaudio-com:ftPosts:st1:meid11887:1Volumite with Dual Mono Opus<table class="content postContainer" width="100%"><tr><td>Got it. Thanks</td></tr></table>2011-10-04T14:48:45-07:002011-10-04T14:48:45-07:00panord<table class="content postContainer" width="100%"><tr><td>Got it. Thanks</td></tr></table>urn:twistedpearaudio-com:ftPosts:st1:meid11886:1Volumite with Dual Mono Opus<table class="content postContainer_Alt" width="100%"><tr><td>I sent you email earlier. PayPal address maybe?</td></tr></table>2011-10-04T14:16:03-07:002011-10-04T14:16:03-07:00Brian Donegan<table class="content postContainer_Alt" width="100%"><tr><td>I sent you email earlier. PayPal address maybe?</td></tr></table>urn:twistedpearaudio-com:ftPosts:st1:meid11885:1Volumite with Dual Mono Opus<table class="content postContainer" width="100%"><tr><td>Thank you, Brian and Russ. I appreciate your help. What's the best way to get the boards back to you?</td></tr></table>2011-10-04T14:11:36-07:002011-10-04T14:11:36-07:00panord<table class="content postContainer" width="100%"><tr><td>Thank you, Brian and Russ. I appreciate your help. What's the best way to get the boards back to you?</td></tr></table>urn:twistedpearaudio-com:ftPosts:st1:meid11881:1Volumite with Dual Mono Opus<table class="content postContainer_Alt" width="100%"><tr><td>Agreed. This is a build issue on my part. I will repair/replace your boards if you send them to me.</td></tr></table>2011-10-04T08:06:35-07:002011-10-04T08:06:35-07:00Brian Donegan<table class="content postContainer_Alt" width="100%"><tr><td>Agreed. This is a build issue on my part. I will repair/replace your boards if you send them to me.</td></tr></table>urn:twistedpearaudio-com:ftPosts:st1:meid11880:1Volumite with Dual Mono Opus<table class="content postContainer" width="100%"><tr><td>5V is beyond the max specified for the chip (4.5v).</td></tr></table>2011-10-04T08:04:51-07:002011-10-04T08:04:51-07:00glt<table class="content postContainer" width="100%"><tr><td>5V is beyond the max specified for the chip (4.5v).</td></tr></table>urn:twistedpearaudio-com:ftPosts:st1:meid11879:1Volumite with Dual Mono Opus<table class="content postContainer_Alt" width="100%"><tr><td>Yes. I understood that. When I was poking around the opus board for the easiest spot to tap 3.3V, I noticed dvdd was measuring 5V at the switch, not 3.3V. I checked the voltage coming out of vrd at C17 and it is 5V. Voltage out of vra at C18 is 3.3V. If the digital side of the dac is operating at 5V, would that have an impact on how the volumite (operating at 3.3V) interacts with it? Should I still try to tap dvdd and run the volumite off of the 5V?<br /><br />This is the wm8741</td></tr></table>2011-10-04T04:28:17-07:002011-10-04T04:28:17-07:00panord<table class="content postContainer_Alt" width="100%"><tr><td>Yes. I understood that. When I was poking around the opus board for the easiest spot to tap 3.3V, I noticed dvdd was measuring 5V at the switch, not 3.3V. I checked the voltage coming out of vrd at C17 and it is 5V. Voltage out of vra at C18 is 3.3V. If the digital side of the dac is operating at 5V, would that have an impact on how the volumite (operating at 3.3V) interacts with it? Should I still try to tap dvdd and run the volumite off of the 5V?<br /><br />This is the wm8741</td></tr></table>urn:twistedpearaudio-com:ftPosts:st1:meid11876:1Volumite with Dual Mono Opus<table class="content postContainer" width="100%"><tr><td>All I really meant though was to take the DVDD and not use the on-board reg for the volumite.<br /><br />Is your opus Wm8740 or Wm8741?</td></tr></table>2011-10-03T19:41:33-07:002011-10-03T19:41:33-07:00Russ White<table class="content postContainer" width="100%"><tr><td>All I really meant though was to take the DVDD and not use the on-board reg for the volumite.<br /><br />Is your opus Wm8740 or Wm8741?</td></tr></table>urn:twistedpearaudio-com:ftPosts:st1:meid11875:1Volumite with Dual Mono Opus<table class="content postContainer_Alt" width="100%"><tr><td>OK. So here is my dumb question for the evening. I went to tap the 3.3V off dvdd. I measured dvdd at C17 coming out of vrd and I am getting 5V. I also measured dvdd at the switch and it is also 5V. This should be 3.3V, right? So I measured avdd at C18 and I'm getting 3.3V. This is the same on both boards. I think vrd and vra switched.</td></tr></table>2011-10-03T18:25:10-07:002011-10-03T18:25:10-07:00panord<table class="content postContainer_Alt" width="100%"><tr><td>OK. So here is my dumb question for the evening. I went to tap the 3.3V off dvdd. I measured dvdd at C17 coming out of vrd and I am getting 5V. I also measured dvdd at the switch and it is also 5V. This should be 3.3V, right? So I measured avdd at C18 and I'm getting 3.3V. This is the same on both boards. I think vrd and vra switched.</td></tr></table>urn:twistedpearaudio-com:ftPosts:st1:meid11867:1Volumite with Dual Mono Opus<table class="content postContainer" width="100%"><tr><td>One suggestion I would make is to power the Volimite with 3.3V (not using the regulator on the Volumite) coming from the Opus, not from the LCDPS. What I am thinking is that the opus may be starting up later than the volumite causing a timing issue. <br /><br />The fact that you situation was "intermittent" definitely does sound like something is lose as Brian stated, but I am just trying to think of other things to try in your situation.</td></tr></table>2011-10-03T05:13:15-07:002011-10-03T05:13:15-07:00Russ White<table class="content postContainer" width="100%"><tr><td>One suggestion I would make is to power the Volimite with 3.3V (not using the regulator on the Volumite) coming from the Opus, not from the LCDPS. What I am thinking is that the opus may be starting up later than the volumite causing a timing issue. <br /><br />The fact that you situation was "intermittent" definitely does sound like something is lose as Brian stated, but I am just trying to think of other things to try in your situation.</td></tr></table>urn:twistedpearaudio-com:ftPosts:st1:meid11866:1Volumite with Dual Mono Opus<table class="content postContainer_Alt" width="100%"><tr><td>I would think so too, but I have touched up all of the solder points on the volumite board and did the same on one of the opus boards - the board I'm testing on (haven't gotten to the 2nd one yet). I'm pretty confident the wire connections are good - I have continuity from pin 7 (scl) of the controller through to DSD on the switch and from pin 5 (sda) on the controller through to DEEMPH.<br /><br />With the volumite plugged in and the power on, I get a steady 3.2V at SDA and DEEMPH. I get about 24mV at SCL and DSD, which fluctuates as I turn the pot. Is this what should I be seeing here?<br /><br />I've gone through two volumite boards now with the same issue. I briefly had intermittent control recently, but it was very brief.</td></tr></table>2011-10-02T13:45:07-07:002011-10-02T13:45:07-07:00panord<table class="content postContainer_Alt" width="100%"><tr><td>I would think so too, but I have touched up all of the solder points on the volumite board and did the same on one of the opus boards - the board I'm testing on (haven't gotten to the 2nd one yet). I'm pretty confident the wire connections are good - I have continuity from pin 7 (scl) of the controller through to DSD on the switch and from pin 5 (sda) on the controller through to DEEMPH.<br /><br />With the volumite plugged in and the power on, I get a steady 3.2V at SDA and DEEMPH. I get about 24mV at SCL and DSD, which fluctuates as I turn the pot. Is this what should I be seeing here?<br /><br />I've gone through two volumite boards now with the same issue. I briefly had intermittent control recently, but it was very brief.</td></tr></table>urn:twistedpearaudio-com:ftPosts:st1:meid11862:1Volumite with Dual Mono Opus<table class="content postContainer" width="100%"><tr><td>The fact that the Volumite was working intermittently, really seems to point to a bad solder joint or loose wire.</td></tr></table>2011-10-02T09:46:56-07:002011-10-02T09:46:56-07:00Brian Donegan<table class="content postContainer" width="100%"><tr><td>The fact that the Volumite was working intermittently, really seems to point to a bad solder joint or loose wire.</td></tr></table>urn:twistedpearaudio-com:ftPosts:st1:meid11861:1Volumite with Dual Mono Opus<table class="content postContainer_Alt" width="100%"><tr><td>I'm beginning to wonder if you are right about the switch. With the switches in the Z position, I am getting a measurement of about 22k ohms across the DEEMPH(sdin), Mode, FSEL and OSR switches. This is measured to either DVDD or GND. And I get about 2.5V on the dac side of the switches at these points with the power on (volumite is not connected). Looks like it is the same on both boards (which seems kind of strange). <br /><br />I'll double check the measurements later (I realize I have reported a variety of measurements previously). If these measurements are correct, am I interpreting it correctly that the switch isn't working right? If that is the case, I guess my other option is to lift the DEEMPH pin on the switch to disconnect it completely?<br /><br />Thanks for you patience.<br /><br />Peter </td></tr></table>2011-10-02T09:24:44-07:002011-10-02T09:24:44-07:00panord<table class="content postContainer_Alt" width="100%"><tr><td>I'm beginning to wonder if you are right about the switch. With the switches in the Z position, I am getting a measurement of about 22k ohms across the DEEMPH(sdin), Mode, FSEL and OSR switches. This is measured to either DVDD or GND. And I get about 2.5V on the dac side of the switches at these points with the power on (volumite is not connected). Looks like it is the same on both boards (which seems kind of strange). <br /><br />I'll double check the measurements later (I realize I have reported a variety of measurements previously). If these measurements are correct, am I interpreting it correctly that the switch isn't working right? If that is the case, I guess my other option is to lift the DEEMPH pin on the switch to disconnect it completely?<br /><br />Thanks for you patience.<br /><br />Peter </td></tr></table>urn:twistedpearaudio-com:ftPosts:st1:meid11853:1Volumite with Dual Mono Opus<table class="content postContainer" width="100%"><tr><td>The controller could only have been damaged if there were a short from SDA or SCL to VDD. </td></tr></table>2011-09-30T19:02:46-07:002011-09-30T19:02:46-07:00Russ White<table class="content postContainer" width="100%"><tr><td>The controller could only have been damaged if there were a short from SDA or SCL to VDD. </td></tr></table>urn:twistedpearaudio-com:ftPosts:st1:meid11852:1Volumite with Dual Mono Opus<table class="content postContainer_Alt" width="100%"><tr><td>Well, I've tried both boards independently in mono mode, so it seems odd that the switches on both boards would be damaged. If the switch is damaged I'm outta luck? Or I wire directly to the I/O connectors.<br /><br />The next question is how likely is it that I wiped out the microcontroller in all of my messing around?</td></tr></table>2011-09-30T18:53:58-07:002011-09-30T18:53:58-07:00panord<table class="content postContainer_Alt" width="100%"><tr><td>Well, I've tried both boards independently in mono mode, so it seems odd that the switches on both boards would be damaged. If the switch is damaged I'm outta luck? Or I wire directly to the I/O connectors.<br /><br />The next question is how likely is it that I wiped out the microcontroller in all of my messing around?</td></tr></table>urn:twistedpearaudio-com:ftPosts:st1:meid11849:1Volumite with Dual Mono Opus<table class="content postContainer" width="100%"><tr><td>Maybe you have a damaged switch?</td></tr></table>2011-09-30T06:23:43-07:002011-09-30T06:23:43-07:00Russ White<table class="content postContainer" width="100%"><tr><td>Maybe you have a damaged switch?</td></tr></table>urn:twistedpearaudio-com:ftPosts:st1:meid11848:1Volumite with Dual Mono Opus<table class="content postContainer_Alt" width="100%"><tr><td>OK. So any intermittent control I had is no gone and I am back to where I was. Sound, but no volume control. Any other suggestions on how to trouble shoot this?</td></tr></table>2011-09-30T06:19:15-07:002011-09-30T06:19:15-07:00panord<table class="content postContainer_Alt" width="100%"><tr><td>OK. So any intermittent control I had is no gone and I am back to where I was. Sound, but no volume control. Any other suggestions on how to trouble shoot this?</td></tr></table>urn:twistedpearaudio-com:ftPosts:st1:meid11822:1Volumite with Dual Mono Opus<table class="content postContainer" width="100%"><tr><td>I'm connecting VCC and GND on the volumite to VD and G on one of the opus boards. I am powering the opus boards and the volumite from a LCDPS.</td></tr></table>2011-09-28T05:44:41-07:002011-09-28T05:44:41-07:00panord<table class="content postContainer" width="100%"><tr><td>I'm connecting VCC and GND on the volumite to VD and G on one of the opus boards. I am powering the opus boards and the volumite from a LCDPS.</td></tr></table>urn:twistedpearaudio-com:ftPosts:st1:meid11816:1Volumite with Dual Mono Opus<table class="content postContainer_Alt" width="100%"><tr><td>How are you powering the volumite?</td></tr></table>2011-09-27T19:12:33-07:002011-09-27T19:12:33-07:00Brian Donegan<table class="content postContainer_Alt" width="100%"><tr><td>How are you powering the volumite?</td></tr></table>urn:twistedpearaudio-com:ftPosts:st1:meid11815:1Volumite with Dual Mono Opus<table class="content postContainer" width="100%"><tr><td>That could be. I making some progress, though. I went back and re-measured everything and I wasn't getting the short across DSD I was seeing last night. Hmmm... note to self - don't do measurements on very small parts when kids are running around screaming behind you and it is getting late.<br /><br />I went back and re-flowed the solder on the volumite board. There was one joint on the IC socket that looked sketchy, but only under bright light and very close up. I hooked everything back up, still just one mono board, and plugged it back in. Now I am getting sound and some control from the volumite, but it is sporadic. Sometimes the volume changes, sometimes not. Sometimes the sound shuts off. The pot swings from 0 to 3.3V, but I can't tell if it is consistent through the rotation. Any suggestions on what else to look at?<br /><br />Peter</td></tr></table>2011-09-27T18:22:42-07:002011-09-27T18:22:42-07:00panord<table class="content postContainer" width="100%"><tr><td>That could be. I making some progress, though. I went back and re-measured everything and I wasn't getting the short across DSD I was seeing last night. Hmmm... note to self - don't do measurements on very small parts when kids are running around screaming behind you and it is getting late.<br /><br />I went back and re-flowed the solder on the volumite board. There was one joint on the IC socket that looked sketchy, but only under bright light and very close up. I hooked everything back up, still just one mono board, and plugged it back in. Now I am getting sound and some control from the volumite, but it is sporadic. Sometimes the volume changes, sometimes not. Sometimes the sound shuts off. The pot swings from 0 to 3.3V, but I can't tell if it is consistent through the rotation. Any suggestions on what else to look at?<br /><br />Peter</td></tr></table>