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by Njord
Wed Oct 10, 2018 5:08 am
Forum: General discussion
Topic: Why sell a 7" screen?
Replies: 69
Views: 3090

Re: Why sell a 7" screen?

Ernst wrote:
Tue Oct 09, 2018 8:05 pm

But many people did receive them. I am one of those who did receive.
Any issues yet? How much time have you spent using it?
by Njord
Tue Oct 09, 2018 7:44 pm
Forum: General discussion
Topic: Why sell a 7" screen?
Replies: 69
Views: 3090

Re: Why sell a 7" screen?

https://www.raspberrypi.org/magpi/raspad-review/ From the kickstarter comment area: "And now it's October and still no tracking number and even worse, no word from sunfounder on some kind of status. " Ricko "I would like to know where my package goes, I haven't received any confirmation of package ...
by Njord
Tue Oct 09, 2018 7:30 pm
Forum: General discussion
Topic: Why sell a 7" screen?
Replies: 69
Views: 3090

Re: Why sell a 7" screen?

(There are of course loads of compatible ones, including 10" https://www.inelcohunter.co.uk/10-1-inch-pcap-touch-screen-2/ by the people who supply the official one I believe ) Yes, I've discovered a 10" panel that might be good, from Sunfounder. Previously were making noises about releasing an Rpi...
by Njord
Tue Oct 09, 2018 6:02 pm
Forum: General discussion
Topic: Why sell a 7" screen?
Replies: 69
Views: 3090

Re: Why sell a 7" screen?

jamesh wrote:
Mon Oct 08, 2018 4:13 pm
So how is it done on expensive screens? I am only aware of PWM for LED backlighting brightness control.
EDIT: Unless you just mean current control?
DC dimming. See here: https://pcmonitors.info/factors-influen ... g-comfort/
by Njord
Mon Oct 08, 2018 3:50 pm
Forum: General discussion
Topic: Why sell a 7" screen?
Replies: 69
Views: 3090

Re: Why sell a 7" screen?

W. H. Heydt wrote:
Mon Oct 08, 2018 5:12 am
Njord wrote:
Mon Oct 08, 2018 3:41 am
jamesh wrote:
Sun Oct 07, 2018 7:59 am
1. The display uses PWM for its backlight control.
That's too bad. I'll have to steer clear of it then.
If that's a problem, you probably have to stay away from *all* LED backlit screens.
Incorrect. PWM brightness adjustment is used only on very low-end screens.
by Njord
Mon Oct 08, 2018 3:41 am
Forum: General discussion
Topic: Why sell a 7" screen?
Replies: 69
Views: 3090

Re: Why sell a 7" screen?

1. The display uses PWM for its backlight control. That's too bad. I'll have to steer clear of it then. 3. 2 lane Dsi is capable of at least 720p. It's easy enough to work it out Great. I was having trouble determining the bandwidth of 1 lane. Do you know it? 6. I doubt we would release a LCD witho...
by Njord
Mon Oct 08, 2018 3:36 am
Forum: General discussion
Topic: Why sell a 7" screen?
Replies: 69
Views: 3090

Re: Why sell a 7" screen?

Question: why not sell a 13.3-inch display, which is the minimal size for productivity. Th main use for a large touch screen is in the role of a larger laptop, which the Pi isn't particularly well suited to anyway. It's a niche that isn't necessarily in the RPF's remit to fulfill. The 3B+ is just g...
by Njord
Mon Oct 08, 2018 3:04 am
Forum: General discussion
Topic: Why sell a 7" screen?
Replies: 69
Views: 3090

Re: Why sell a 7" screen?

Where did you read about installing malware? I have never heard about this? Personally for the second option im neutral on this. Apple does not really know if the phone shops are using legit parts, but Apple should repair the phones either way. Returned items go to a 3rd party for repackaging and a...
by Njord
Sat Oct 06, 2018 10:01 pm
Forum: General discussion
Topic: Why sell a 7" screen?
Replies: 69
Views: 3090

Re: Why sell a 7" screen?

If you really think keeping the same product on the market for 3 years without some sort of refresh is too long, I suggest that you design and being to market a display you'd prefer....and bring out a replacement no less often than every two years. Would that require a trip to Shenzhen? My lungs ha...
by Njord
Sat Oct 06, 2018 9:58 pm
Forum: General discussion
Topic: Why sell a 7" screen?
Replies: 69
Views: 3090

Re: Why sell a 7" screen?

Apart from anecdotes of my own Apple experiences, which prove nothing, I point to the following evidence to back my assertions:... Need I go on? I would add that in every discussion with salespeople at Apple Stores-- I tend to linger and chat with them to get their honest takes on things-- the fois...
by Njord
Sat Oct 06, 2018 9:45 pm
Forum: General discussion
Topic: Why sell a 7" screen?
Replies: 69
Views: 3090

Re: Why sell a 7" screen?

That doesn't mean it's perfect, doesn't preclude the potential for it being better, but it's certainly not doing badly for what it is. Yes the actual Pi 3B+ is not bad when used with a heatsink. I just hope they'll continue improving the display. 3 years putting out a small 800x480 display is long ...
by Njord
Sat Oct 06, 2018 9:38 pm
Forum: General discussion
Topic: Why sell a 7" screen?
Replies: 69
Views: 3090

Re: Why sell a 7" screen?

I have to disagree with this statement. Apple does not make badly engineered products. They are not unreliable. They are repairable. Some of their products can be overpriced but not massively since they make many of their product parts themselves. I know your trying to make a point :P Apple's great...
by Njord
Sat Oct 06, 2018 9:25 pm
Forum: General discussion
Topic: Why sell a 7" screen?
Replies: 69
Views: 3090

Re: Why sell a 7" screen?

Is it worth pointing out that the Pi itself is more like 10 year old tech? So far, all Pi SoCs are fabbed on a 40nm process. When was the last time Intel used anything that big? Holy frijoles. Another interesting point about the SoC is that unlike the Intel CPUs, it isn't vulnerable to Spectre and ...
by Njord
Sat Oct 06, 2018 9:18 pm
Forum: General discussion
Topic: Why sell a 7" screen?
Replies: 69
Views: 3090

Re: Why sell a 7" screen?

When the Pi first came out, I had a project in mind. My only question was whether or not the Pi could handle the assigned job with it. So I bought a Pi and tested it. Turned out to--pretty much just barely--have the chops to do what I wanted it to. There are other issues though. Primary in my mind ...
by Njord
Sat Oct 06, 2018 8:59 pm
Forum: General discussion
Topic: Why sell a 7" screen?
Replies: 69
Views: 3090

Re: Why sell a 7" screen?

I can think of three developments that would please me (note that I'm not saying the RPF *should*, let alone *must*, use these features). Start with going OLED. Second, increase the resolution. Third, add a larger screen. Unless and until any of that happens (and it may not be in my lifetime), when...
by Njord
Sat Oct 06, 2018 4:00 pm
Forum: General discussion
Topic: Why sell a 7" screen?
Replies: 69
Views: 3090

Re: Why sell a 7" screen?

$80 in parts translates to over $200 at retail. Engineering a case is not a trivial part of the cost. Sure. But the cost has come down a lot since the 1990's. Getting a screen that works directly with the Raspberry Pi's monitor connector isn't trivial. As I was saying above I suspect that the 2 LVD...
by Njord
Sat Oct 06, 2018 3:46 pm
Forum: General discussion
Topic: Why sell a 7" screen?
Replies: 69
Views: 3090

Re: Why sell a 7" screen?

When I think of tablets, the 7" format was the least popular in the marketplace. Perhaps it wasn't chosen on the grounds of what might most appeal but on the basis of what was available and would remain available, its cost and functionality. ... The Foundation aren't in this game as a manufacturer ...
by Njord
Sat Oct 06, 2018 3:01 pm
Forum: General discussion
Topic: Why sell a 7" screen?
Replies: 69
Views: 3090

Re: Why sell a 7" screen?

7in display with 800x480pixels are widely used in the industry. ... So what stops you? The Pi-top ceed's screen has PWM screen dimming so it produces a high-pitch whine., which triggers tinnitus in my case. It appears that Waveshare has one 10.1" display, but I didn't find any reviews. I found one ...
by Njord
Sat Oct 06, 2018 4:49 am
Forum: General discussion
Topic: Why sell a 7" screen?
Replies: 69
Views: 3090

Re: Why sell a 7" screen?

When I was working in electronics mail-order retail, the Pi screen was a fairly solid seller. Not huge, but easily the biggest-selling display we had. Question: why not sell a 13.3-inch display, which is the minimal size for productivity. If you thought a 7" was expensive, a 13.3" is off the charts...
by Njord
Sat Oct 06, 2018 3:02 am
Forum: General discussion
Topic: Why sell a 7" screen?
Replies: 69
Views: 3090

Why sell a 7" screen?

Hi all, From the start, when the 7" screen was announced, I found myself puzzling over why 7 inches was chosen. When I think of tablets, the 7" format was the least popular in the marketplace. 10" was wildly popular but far fewer people wanted 7". 10" was just big enough for web browsing, and for li...
by Njord
Fri Oct 05, 2018 2:47 pm
Forum: General discussion
Topic: DSI versus LVDS
Replies: 4
Views: 933

Re: DSI versus LVDS

aBUGSworstnightmare wrote:
Fri Oct 05, 2018 5:41 am
Your use of the term LVDS (=Low Voltage Differential Signaling) is wrong.
Ah yes I see wikipedia says "Since it was the first successful use of LVDS, to this day many display engineers use the generic term LVDS when referring specifically to FPD-Link / FlatLink product technology. "
by Njord
Thu Oct 04, 2018 9:04 pm
Forum: General discussion
Topic: DSI versus LVDS
Replies: 4
Views: 933

DSI versus LVDS

Hi all, It seems that the interface that most LCDs use these days is LVDS, which connects using a flexible flat cable. Why does the Raspberry pi have a DSI connector and how does that differ from a LVDS connection, signal-wise? Are LVDS cables standardized or are the custom for each display and driv...
by Njord
Thu Oct 04, 2018 6:20 pm
Forum: Off topic discussion
Topic: Spy chips found in Supermicro motherboards. What about the pi?
Replies: 9
Views: 2829

Spy chips found in Supermicro motherboards. What about the pi?

Hardware hacks perpetrated by the Peoples Liberation Army (ironically named) have been found in motherboards from Supermicro. Read this fascinating article: https://www.bloomberg.com/news/features/2018-10-04/the-big-hack-how-china-used-a-tiny-chip-to-infiltrate-america-s-top-companies https://www.bl...
by Njord
Thu Oct 04, 2018 6:17 pm
Forum: General discussion
Topic: Pi as basis for laptop
Replies: 13
Views: 732

Re: Pi as basis for laptop

I would expect there would only be consensus and coordinated effort from people who have a common vision of what a particular laptop should be. A coordinated effort would probably need to be an exercise in compromise and that can be difficult to achieve and carry through to completion. I agree with...
by Njord
Thu Oct 04, 2018 5:51 pm
Forum: General discussion
Topic: Pi as basis for laptop
Replies: 13
Views: 732

Re: Pi as basis for laptop

rpdom wrote:
Thu Oct 04, 2018 5:40 am
those chips do not support the PoP memory format which is needed to keep the cost of the Zero down
What is the PoP memory format?

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