Support and General Use > Hardware
Clip Zip keeps erroring
saratoga:
I don't think we'd go below 2.75V. Previously the value was 2.65V, and in older builds it used to be 2.8V.
I'm not sure about Windows, but in rockbox you'd have to physically disconnect the USB cable before it will leave MSC mode.
flickspot:
Alright, I'll report back in the morning.
By the way, I'm a novice in this area, but is it possible that a voltage tested on my device could be insufficient for another device? I'm thinking about this like you'd think about a CPU overclock. Could it become insufficient over time as the electronics in these devices degrade?
Edit: In fact, due to the above concerns, and also apparently because devices without microSDs need less voltage, would the dev team consider putting in a user-controlled undervolting feature in the firmware? This has kind of reminded me of how phones are getting these kinds of tools these days in the form of third-party apps for enthusiast users.
Mihail Zenkov:
--- Quote from: saratoga on March 22, 2016, 06:56:48 PM ---I don't think we'd go below 2.75V. Previously the value was 2.65V, and in older builds it used to be 2.8V.
--- End quote ---
If 2.75V will be ok, I think we should also try 2.7V. We should have CVDD2 low as possible as it has a great influence on battery time, especially on clip+.
--- Quote from: flickspot on March 22, 2016, 07:07:38 PM ---By the way, I'm a novice in this area, but is it possible that a voltage tested on my device could be insufficient for another device? I'm thinking about this like you'd think about a CPU overclock.
--- End quote ---
We want find and set by default safe value for all users.
--- Quote from: flickspot on March 22, 2016, 07:07:38 PM ---Could it become insufficient over time as the electronics in these devices degrade?
--- End quote ---
I don't think so. I use overclocked/underclocked devices for many years with same settings. If it become unstable - this is hardware issue and reverting to default setting not help much.
--- Quote from: flickspot on March 22, 2016, 07:07:38 PM ---Edit: In fact, due to the above concerns, and also apparently because devices without microSDs need less voltage, would the dev team consider putting in a user-controlled undervolting feature in the firmware? This has kind of reminded me of how phones are getting these kinds of tools these days in the form of third-party apps for enthusiast users.
--- End quote ---
It is possible later when we are sure that everything is stable, I will try compare fine tuned voltage settings for individual player to settings by default and to understand is it makes sense.
If it have sense, we can switch voltage automatically when sd card inserted.
But now I think better spend time for software (codec/dsp) optimization: it improve battery time on all targets and can be quite considerable.
flickspot:
Well, it's been ~11 hours, and everything seems stable. I'll test the 2.7V build when you upload it.
Regarding degradation, I think it's commonly accepted that electronics can become less efficient over many years due to degradation. Intel has acknowledged that higher voltages degrade electronics more quickly, implying there is some form of degradation over time even with a lower voltage. I don't know whether this manifests in less efficiency or something else, but the CPU overclocking community seems to think the former is the case.
Mihail Zenkov:
You right, degradation electronics component can be more quickly if it used with higher voltage/current/frequency than recommended in datasheet. But as I mention before - if we have notable degradation in some electronics component reverting to default settings not option. If hardware broken it should be replaced/repaired.
Navigation
[0] Message Index
[#] Next page
[*] Previous page
Go to full version