Amveco 70010
Man this is killing me waiting for the back ordered Amveco 70010 transformer from DigiKey (this is the 2 x 7V unit). They are telling me mid September now. Does anyone have a spare transformer they are willing to sell?
Robert
Man this is killing me waiting for the back ordered Amveco 70010 transformer from DigiKey (this is the 2 x 7V unit). They are telling me mid September now. Does anyone have a spare transformer they are willing to sell?
Robert
Out of curiosity, how's everyone doing with their boards?
I've only heard of 2 boards being built, MattN's and rjkdivin's... what's the story on the other 24 boards out there?
I've only heard of 2 boards being built, MattN's and rjkdivin's... what's the story on the other 24 boards out there?
This is my 2nd week of college. No money for components, but once I get settled in I'll start building. I was sure to bring the pcb with me.
Josh
Josh
I need to have something to do during those long winter days. It's way too nice outside right now to spend time indoors with a soldering iron. Looking forward to building it though.
I'm STILL waiting for my transformer on back order at Digi-Key. But it is supposed to be here this month.
Robert
Robert
Success
My transformer from Digi-Key arrived today so I wasted no time in soldering it in and setting about to program the AVR using the hex file. It connected to, erased, and programmed ok, but when I had AVR Studio try to read the AVR as a check, it said failed.
Not to be deterred, I decided I should try it out before getting too excited.
It is playing beautifully, it has no trouble switching between Coaxial and Optical inputs (takes a fraction of a second), and the digital volume control works wonderfully.
Gary....any idea why the program might indicate Read Fails? Or does it even matter if it is working correctly?
Also, I set the Int RC Osc at 2MHz, 6CK + 4ms just to try it once....seems not to make a difference from the 4MHz. Is this an important setting for proper function?
Robert
My transformer from Digi-Key arrived today so I wasted no time in soldering it in and setting about to program the AVR using the hex file. It connected to, erased, and programmed ok, but when I had AVR Studio try to read the AVR as a check, it said failed.
Not to be deterred, I decided I should try it out before getting too excited.
It is playing beautifully, it has no trouble switching between Coaxial and Optical inputs (takes a fraction of a second), and the digital volume control works wonderfully.
Gary....any idea why the program might indicate Read Fails? Or does it even matter if it is working correctly?
Also, I set the Int RC Osc at 2MHz, 6CK + 4ms just to try it once....seems not to make a difference from the 4MHz. Is this an important setting for proper function?
Robert
An externally hosted image should be here but it was not working when we last tested it.
Still Listening
Gary,
The sound from this DAC/Headamp is really very very good. I've been listening to some Pink Floyd, and I'm hearing details I've never heard before. Sound is very full, virtually no background noise, and excellent fidelity.
I set the Int RC Osc back to 4MHz from 2MHz....really can't tell any difference.
AVR Studio 4 still gives a failed indication when I try to have it read the AVR, but everything is working properly.....still curious about this though?
I'm going to start my second board now that I see how well it works......I will post any differences I notice when I get it finished.
Robert
Gary,
The sound from this DAC/Headamp is really very very good. I've been listening to some Pink Floyd, and I'm hearing details I've never heard before. Sound is very full, virtually no background noise, and excellent fidelity.
I set the Int RC Osc back to 4MHz from 2MHz....really can't tell any difference.
AVR Studio 4 still gives a failed indication when I try to have it read the AVR, but everything is working properly.....still curious about this though?
I'm going to start my second board now that I see how well it works......I will post any differences I notice when I get it finished.
Robert
Re: Success
Have you programmed any of the security bits that don't allow code to be read back?
As for 2MHz versus 4MHz, it shouldn't make much of a difference. At 2MHz the volume control will be more "damped" since it's sampled less often, and when it's cycling back and forth for a SPDIF stream it'll only do that at half speed. I don't know why I picked 4MHz 😀
rjkdivin said:
Have you programmed any of the security bits that don't allow code to be read back?
As for 2MHz versus 4MHz, it shouldn't make much of a difference. At 2MHz the volume control will be more "damped" since it's sampled less often, and when it's cycling back and forth for a SPDIF stream it'll only do that at half speed. I don't know why I picked 4MHz 😀
Re: Re: Success
In the Lockbits list, AVR Studio 4 defaults as follows, and I have not changed it:
Mode 1: No Memory Lock Features Enabled.
Application Protection Mode 1: No Lock on SPM and LPM in Application Section.
Boot Loader Protection Mode 1: No Lock on SPM and LPM in Boot Loader Section.
I've re-programmed about 6 times now....always the same result....the HD-1 works wonderfully, but AVR Studio 4 cannot read the Flash after it is programmed.
Robert
The AVRISPMkII/AVR Studio 4 does not recognize the ATMEGA8 unless it is powered.argofanatic said:
gmarsh said:
In the Lockbits list, AVR Studio 4 defaults as follows, and I have not changed it:
Mode 1: No Memory Lock Features Enabled.
Application Protection Mode 1: No Lock on SPM and LPM in Application Section.
Boot Loader Protection Mode 1: No Lock on SPM and LPM in Boot Loader Section.
I've re-programmed about 6 times now....always the same result....the HD-1 works wonderfully, but AVR Studio 4 cannot read the Flash after it is programmed.
Robert
Thats what I'm doing. I just need to throw it in a case now and get started on my second one.gmarsh said:
By the way, out of curiosity I've measured the temperature of the various components, including chips, and everything is running at very reasonable temperatures....about 110 deg F. maximum. I guess that will go up a little when it is cased, but I was surprised it was running that cool.
Robert
Second One
I finished my second HD-1. It works perfectly, exactly like the first one. They both sound great!
Now some case work is in order.
Robert
I finished my second HD-1. It works perfectly, exactly like the first one. They both sound great!
Now some case work is in order.
Robert
- Status
- Not open for further replies.