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Search: Posts Made By: bertrik
Forum: Samsung R0 Rockbox / Mods 05-29-2012, 03:36 AM
Replies: 1,178
Views: 173,504
Posted By bertrik
Probably the same issue as: ...

Probably the same issue as:
http://www.rockbox.org/tracker/task/12684

Delete all .tcd files from the .rockbox directory, enable dircache (settings / general settings / disk IIRC) and try again to...
Forum: Sansa Clip / Clip+ / Clip Zip 03-20-2012, 01:56 PM
Replies: 5
Views: 1,198
Posted By bertrik
I think we haven't taken a proper battery...

I think we haven't taken a proper battery benchmark yet to calibrate the battery curve. We're probably using a generic linear curve now. What I've seen from many kinds of lithium batteries so far, is...
Forum: Sansa Clip / Clip+ / Clip Zip 02-17-2012, 02:42 PM
Replies: 487
Views: 229,972
Posted By bertrik
On October 12th 2011, we increased some of the...

On October 12th 2011, we increased some of the voltages for the DAC in rockbox to match the voltage settings that the original firmware uses. This also increased the volume, so that probably explains...
Forum: Sansa Clip / Clip+ / Clip Zip Rockbox 02-02-2012, 02:13 PM
Replies: 602
Views: 140,885
Posted By bertrik
earlpianokeys, sorry to hear it doesn't work for...

earlpianokeys, sorry to hear it doesn't work for you. To help the rockbox team diagnose the problem, could you create an entry in our bugtracker?

It's a bit weird problem, because apparently the...
Forum: Sansa Clip / Clip+ / Clip Zip 01-18-2012, 11:46 AM
Replies: 8
Views: 1,590
Posted By bertrik
For the rockbox project, I've looked extensively...

For the rockbox project, I've looked extensively at the hardware of various sansa players and never saw any evidence for a battery gauge component. The battery does have a wire additional to the plus...
Forum: Sansa Clip / Clip+ / Clip Zip 10-16-2011, 05:38 PM
Replies: 3
Views: 2,406
Posted By bertrik
Are you sure it really stopped working? A...

Are you sure it really stopped working?

A common misunderstanding with the Clip+ is that people think the radio is broken while it's just "stopped" (showing a rectangle below the tuned frequency)....
Forum: Sansa Clip / Clip+ / Clip Zip 08-27-2011, 05:06 PM
Replies: 487
Views: 229,972
Posted By bertrik
Smile Marvin, thanks for trying out the diagnostic...

Marvin, thanks for trying out the diagnostic mode!
This confirms that a) diagnostic mode can still be enabled in the traditional way :) b) it indeed uses a silabs tuner (si4702 or compatible) c) it...
Forum: Sansa Clip / Clip+ / Clip Zip 08-26-2011, 10:06 AM
Replies: 487
Views: 229,972
Posted By bertrik
Question diagnostic mode?

Have you tried to enter the diagnostic mode already?

On the clip+ this can be enabled by flashing a firmware ending in a 't' (for test presumably), like clpzt.bin instead of clpza.bin.
The...
Forum: Sansa Fuze 07-15-2011, 04:44 AM
Replies: 2
Views: 1,074
Posted By bertrik
The fuze uses a main crystal of 24 MHz to...

The fuze uses a main crystal of 24 MHz to generate most other frequencies (e.g. clock for the CPU). I think a harmonic of this frequency at 96 MHz (= 4 x 24 MHz) is picked up by the radio chip.
...
Forum: Sansa Clip / Clip+ / Clip Zip Rockbox 05-12-2011, 10:04 AM
Replies: 1,576
Sticky: Rockbox: Clip+
Views: 353,769
Posted By bertrik
Actually this is quite an interesting fact, as...

Actually this is quite an interesting fact, as possibly reduced battery run-time was an important argument to *not* enable high-quality mode (AFAIK). If having high-quality enabled or not does not...
Forum: Sansa Clip / Clip+ / Clip Zip Rockbox 04-28-2011, 06:13 AM
Replies: 5
Views: 1,273
Posted By bertrik
In rockbox, the resolution is linked to the FM...

In rockbox, the resolution is linked to the FM 'Region' setting.
Setting US/Canada has a grid of 200 kHz on "odd" frequencies.
Setting Europe has a grid of 100 kHz.
Settings Italy/Other have a...
Forum: Sansa Clip / Clip+ / Clip Zip 04-12-2011, 08:25 AM
Replies: 147
Views: 45,472
Posted By bertrik
In theory, we could do this in rockbox. The...

In theory, we could do this in rockbox. The charge controller allows us to set the max. voltage (between 3.9V and 4.25V IIRC in steps of 50 mV). Currently, we use 4.2V just like the original...
Forum: Sansa Clip / Clip+ / Clip Zip 04-10-2011, 05:47 PM
Replies: 58
Views: 14,403
Posted By bertrik
The max. current indication in the disk info...

The max. current indication in the disk info debug screen in rockbox is a bit misleading. It only provides meaningful current information for relatively older cards. It will be wrong for SDHC cards,...
Forum: Sansa Clip / Clip+ / Clip Zip 03-29-2011, 04:00 PM
Replies: 5
Views: 1,731
Posted By bertrik
There already are two different kinds of OLED...

There already are two different kinds of OLED displays for the Clip+. This may be the third then. If it's LCD, then the "time-dithering" algorithm in rockbox to create shades of grey may actually...
Forum: Sansa Clip / Clip+ / Clip Zip Rockbox 03-28-2011, 10:52 AM
Replies: 9
Views: 1,618
Posted By bertrik
If you're not comfortable installing the "current...

If you're not comfortable installing the "current build", I recommend to stick with 3.7.1 for now and wait for 3.8.1 which will probably be released within in a few weeks. It contains several of...
Forum: Sansa Clip / Clip+ / Clip Zip Rockbox 03-28-2011, 10:22 AM
Replies: 1,576
Sticky: Rockbox: Clip+
Views: 353,769
Posted By bertrik
It's normal if battery life decreases a bit with...

It's normal if battery life decreases a bit with the microsd inserted, because we power up the internal sd card controller for that, and the microsd card will consume some power by itself too.

I...
Forum: Sansa Clip / Clip+ / Clip Zip 01-19-2011, 04:00 PM
Replies: 6
Views: 3,793
Posted By bertrik
I think that usually the third wire from a...

I think that usually the third wire from a lithium battery is connected to a thermistor, to get a rough estimate of the battery temperature. So maybe R3 is the thermistor, or possibly some dummy...
Forum: Sansa Clip / Clip+ / Clip Zip 01-19-2011, 03:52 PM
Replies: 4
Views: 2,147
Posted By bertrik
Actually, the clip+ comes with one of two...

Actually, the clip+ comes with one of two different radio chips, an SI4702 or an RDA5802, so it might be a hardware difference after all.
Forum: Sansa Clip / Clip+ / Clip Zip 10-27-2010, 05:05 PM
Replies: 70
Views: 6,994
Posted By bertrik
I like the clip case more than the clip+ case (I...

I like the clip case more than the clip+ case (I have both players). I can't really recognize claims like clip+ "superior construction" (Synaptic Fow) or that the clip+ is made of "higher quality...
Forum: Sansa Clip / Clip+ / Clip Zip Rockbox 10-16-2010, 07:43 AM
Replies: 12
Views: 3,899
Posted By bertrik
The fm radio stereo patch I mentioned earlier is...

The fm radio stereo patch I mentioned earlier is now in the current rockbox build.
Forum: Sansa Clip / Clip+ / Clip Zip 10-14-2010, 09:41 AM
Replies: 10
Views: 4,940
Posted By bertrik
IIRC, if the files were added while in MTP mode,...

IIRC, if the files were added while in MTP mode, they go into the ##MUSIC# folder. This folder is not visible from the PC in MSC mode.

How many files should be on the player anyway?
5GB in 745...
Forum: Sansa Clip / Clip+ / Clip Zip Rockbox 10-13-2010, 12:02 PM
Replies: 12
Views: 3,899
Posted By bertrik
Another (much simpler) thing to check is the FM...

Another (much simpler) thing to check is the FM radio region setting. Apparently Australia uses the same grid as the US/Canada, with stations only on frequencies with odd decimals (like 103.3, but...
Forum: Sansa Clip / Clip+ / Clip Zip 10-11-2010, 01:34 PM
Replies: 4
Views: 3,225
Posted By bertrik
Do you run linux? If so, have a look with dmesg...

Do you run linux? If so, have a look with dmesg or in /var/log/messages while plugging it into USB. If you see a device with name "UNDEF", it is probably in a semi-bricked state.
Forum: Sansa Clip / Clip+ / Clip Zip Rockbox 10-10-2010, 03:44 AM
Replies: 12
Views: 3,899
Posted By bertrik
If you know how to work with patches, you can try...

If you know how to work with patches, you can try one of the patches posted here:
http://www.rockbox.org/tracker/task/11405
It enables stereo even for rather weak signals.
Forum: Sansa Clip / Clip+ / Clip Zip Rockbox 10-07-2010, 04:10 PM
Replies: 12
Views: 3,899
Posted By bertrik
The Clip+ can come with two different FM tuner...

The Clip+ can come with two different FM tuner chips, either ad SI4702 or an RDA5802 tuner chip. You can figure out the specific tuner chip by going into menu system/debug/fm debug. The SI4702 is...
Showing results 1 to 25 of 34

 
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