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by W. H. Heydt
Fri Jan 19, 2018 12:55 am
Forum: General discussion
Topic: When will Raspberry Foundation admit that the Pi destroys your SD cards?
Replies: 66
Views: 2409

Re: When will Raspberry Foundation admit that the Pi destroys your SD cards?

TLC at 1k cycles is nowadays only capable of such endurance using LDPC or some other form of smart ecc and dsp. With bch, you'd be lucky to get a few 100s cycles out of your run of the mill 15nm flash 3D is a different story, much better endurance due to much bigger cell sizes. Given the claims for...
by W. H. Heydt
Fri Jan 19, 2018 12:13 am
Forum: General discussion
Topic: When will Raspberry Foundation admit that the Pi destroys your SD cards?
Replies: 66
Views: 2409

Re: When will Raspberry Foundation admit that the Pi destroys your SD cards?

Thats really a non issue, since most if not all device priorities sd boot over nand boot. So even with a dead eMMC you can always boot from sd card and use the board. *cough* CM/CM3 *cough* (Not actually SBCs, but...) thats just bad design though. On whose part? However, the point stands. While the...
by W. H. Heydt
Fri Jan 19, 2018 12:03 am
Forum: General discussion
Topic: Most efficient way to power the Zero board from LiPoly?
Replies: 8
Views: 203

Re: Most efficient way to power the Zero board from LiPoly?

I don't need to run it for hours or days, I need it to run for at least a few months. But it won't run all the time, it will be woken up for 30 seconds or so every hour, then it will shut down. I don't need HDMI, but I need USB every once in a while for a 3G modem. I think that runs at 3.3v so it s...
by W. H. Heydt
Thu Jan 18, 2018 11:52 pm
Forum: General discussion
Topic: RPi2B right for me?
Replies: 6
Views: 141

Re: RPi2B right for me?

It lists the 64-bit ARM Cortex-A53 under the Xilinx bullet. Is this not the same as what's in the 2B? Regardless, there is documentation of it having been ported to it. https://github.com/jameswalmsley/RaspberryPi-FreeRTOS Pi2Bv1.2 (the current version) and the Pi3B use the same SoC. The one on the...
by W. H. Heydt
Thu Jan 18, 2018 3:45 am
Forum: General discussion
Topic: When will Raspberry Foundation admit that the Pi destroys your SD cards?
Replies: 66
Views: 2409

Re: When will Raspberry Foundation admit that the Pi destroys your SD cards?

Seen claims before for FeRam, NVRAM, MRAM, FRAM etc And now NRAM, 3D Xpoint? I will believe it when I can buy them. Remember magnetic bubble? Actually, if I'm not mistaken, you *can* buy Xpoint modules. Unfortunately, they don't have a lot of capacity and are being pushed more as a disk caching uni...
by W. H. Heydt
Thu Jan 18, 2018 1:35 am
Forum: General discussion
Topic: When will Raspberry Foundation admit that the Pi destroys your SD cards?
Replies: 66
Views: 2409

Re: When will Raspberry Foundation admit that the Pi destroys your SD cards?

TLC at 1k cycles is nowadays only capable of such endurance using LDPC or some other form of smart ecc and dsp. With bch, you'd be lucky to get a few 100s cycles out of your run of the mill 15nm flash 3D is a different story, much better endurance due to much bigger cell sizes. Given the claims for...
by W. H. Heydt
Thu Jan 18, 2018 1:31 am
Forum: General discussion
Topic: When will Raspberry Foundation admit that the Pi destroys your SD cards?
Replies: 66
Views: 2409

Re: When will Raspberry Foundation admit that the Pi destroys your SD cards?

hojnikb wrote:
Wed Jan 17, 2018 7:57 pm
Thats really a non issue, since most if not all device priorities sd boot over nand boot. So even with a dead eMMC you can always boot from sd card and use the board.
*cough* CM/CM3 *cough* (Not actually SBCs, but...)
by W. H. Heydt
Wed Jan 17, 2018 10:05 pm
Forum: General discussion
Topic: Most efficient way to power the Zero board from LiPoly?
Replies: 8
Views: 203

Re: Most efficient way to power the Zero board from LiPoly?

As any Engineer can tell you, efficiency depends on what you want to effish. The most straightforward way to do this is to get a "powerbank" and connect it to your Pi0 with a USB-A to microUSB cable. Preferably as short and thick a one as you can find. You don't say what--besides the Pi0--you plan t...
by W. H. Heydt
Wed Jan 17, 2018 6:51 pm
Forum: Off topic discussion
Topic: [Solved] static ip in Stretch not quite working with my setup
Replies: 8
Views: 182

Re: static ip in Stretch not quite working with my setup

I only use wifi. There is no LAN port on the router. In fact, there are no ports at all on the router. The mind boggles... Who would design a router that way? (Actually...if it really is a router, I'd bet that there is at least one port...the WAN port. Or if it is a combined modem/router there is e...
by W. H. Heydt
Wed Jan 17, 2018 5:15 pm
Forum: General discussion
Topic: 15" LCD is not displaying image properly on raspberry pi
Replies: 4
Views: 134

Re: 15" LCD is not displaying image properly on raspberry pi

Did you try just letting the Pi auto-detect the config?
by W. H. Heydt
Wed Jan 17, 2018 4:40 pm
Forum: General discussion
Topic: Eben Upton on BBC Radio 4 "The Life Scientific"
Replies: 26
Views: 1055

Re: Eben Upton on BBC Radio 4 "The Life Scientific"

If the interview was done in the same manner as we used to do "This is Your Life", etc. (since radio is merely television without the pictures) I would guess the pair rabbited for a couple of hours, and the less interesting bits were chopped out. You're probably right. It'd be fun to get ones hands...
by W. H. Heydt
Wed Jan 17, 2018 1:50 am
Forum: Compute Module
Topic: Compute Module
Replies: 20
Views: 581

Re: Compute Module

awesomelydeluxe wrote:
Wed Jan 17, 2018 1:41 am
It's just the whole industrial application and custom I/O board that I was interested in.
As a concept or to go into a business? Once more, I can't emphasize enough that if you are interested in the CM, read the Compute Module forum. That's where the active CM discussions take place.
by W. H. Heydt
Wed Jan 17, 2018 1:47 am
Forum: General discussion
Topic: Raspbian Modification
Replies: 14
Views: 548

Re: Raspbian Modification

awesomelydeluxe wrote:
Wed Jan 17, 2018 1:42 am
Is there a guide for Python?
Tons of them. Google is your friend. Plus, of course, innumerable books. You could probably find college or "adult education" courses on it as well. If you have a local Coder Dojo or Code Club near by, pretend to be 10 years old and they'd probably teach it to you.
by W. H. Heydt
Tue Jan 16, 2018 11:13 pm
Forum: General discussion
Topic: looking for a simple and lightweight music player for PI ZERO
Replies: 11
Views: 317

Re: looking for a simple and lightweight music player for PI ZERO

I use mplayer. I *think* it fits your criteria.
by W. H. Heydt
Tue Jan 16, 2018 6:37 pm
Forum: General discussion
Topic: Eben Upton on BBC Radio 4 "The Life Scientific"
Replies: 26
Views: 1055

Re: Eben Upton on BBC Radio 4 "The Life Scientific"

Hey, Eben...a real programmer can write a FORTRAN program in any language.
by W. H. Heydt
Tue Jan 16, 2018 4:56 pm
Forum: Compute Module
Topic: Compute Module
Replies: 20
Views: 581

Re: Compute Module

Actually... WD makes a media stick based on the CM... https://www.wdc.com/products/wdlabs/med ... WDLB004RNN
by W. H. Heydt
Tue Jan 16, 2018 4:52 pm
Forum: General discussion
Topic: Eben Upton on BBC Radio 4 "The Life Scientific"
Replies: 26
Views: 1055

Re: Eben Upton on BBC Radio 4 "The Life Scientific"

Some bloke called Eben sitting opposite me right now, just told me the sales figures for last year and profits. Impressive, as in, blimey, THAT MANY?? I'm pleased it has done well but not surprised. After all I was predicting a million sales of Pi originals and Pi Zeroes when people were refusing t...
by W. H. Heydt
Tue Jan 16, 2018 5:07 am
Forum: Compute Module
Topic: Compute Module
Replies: 20
Views: 581

Re: Compute Module

I'm not one to make PCB's, but to put them to others instead. Since I don't want to do it by myself, is there a place where I can get a custom made I/O board? I'm sure Element 14 could do it through their custom Pi program. Of course, you'd have the up front expense of covering the engineering deve...
by W. H. Heydt
Tue Jan 16, 2018 5:02 am
Forum: Compute Module
Topic: Compute Module
Replies: 20
Views: 581

Re: Compute Module

So basically I can use any kind of board I want as long as it works with the CM3? So when I get experience, I can make my own? You *really* need to get your hands on the RPF CMIO3 board so you can get a glimpse of what is involved. I trust that you are aware that it is quite common to have 4 or mor...
by W. H. Heydt
Tue Jan 16, 2018 3:36 am
Forum: General discussion
Topic: Pi Zero
Replies: 1
Views: 103

Re: Pi Zero

You can get displays up to about 3.5" that connect to a Pi through the GPIO block. With a Pi0 you'll have to solder the GPIO pins in yourself. To find displays, use your favorite search engine and look for small displays for Pis. I am personally rather fond of the 3.5" LCD from Neosec, but there are...
by W. H. Heydt
Tue Jan 16, 2018 3:31 am
Forum: Compute Module
Topic: Compute Module
Replies: 20
Views: 581

Re: Compute Module

I've actually never soldered anything before. So for the CM + an I/O board you need a power PCB? The power circuits are generally on the carrier board PCB. If you really want to move forward with a project of developing your own carrier board, I would suggest two things. First, buy an RPF/RPT devel...
by W. H. Heydt
Tue Jan 16, 2018 12:19 am
Forum: Compute Module
Topic: Compute Module
Replies: 20
Views: 581

Re: Compute Module

I'm thinking of making a media center out of this, like Slice http://fiveninjas.com/index.html Is it hard to make stuff with the module? How are you at circuit board design and surface mount soldering? Remember that you will be responsible for having the required power and power safety circuitry co...
by W. H. Heydt
Mon Jan 15, 2018 9:55 pm
Forum: Compute Module
Topic: Compute Module
Replies: 20
Views: 581

Re: Compute Module

OK, so this is what I've seen so far that's different: 1. Internal flash memory Yes--though not on the CM3L. Also "different" (in this case does not necessarily mean "better". 2. Needs an IO board Yes, and the I/O board can be customized. The development board (done by the RPT), exposes lots of GPI...
by W. H. Heydt
Mon Jan 15, 2018 6:39 pm
Forum: Compute Module
Topic: Compute Module
Replies: 20
Views: 581

Re: Compute Module

So the CM is actually better than the RPi 3/B? (Note: I am reading the question as referring to the CM3. The CM uses the original Model B/Model A/A+/B+/Pi0/Pi0W(H) SoC...single core ARMv11, 700MHz to 1GHz, 512MB RAM with 4GB eMMC added.) Define "better". It's the exact same SoC. The exact same RAM....
by W. H. Heydt
Mon Jan 15, 2018 6:22 pm
Forum: General discussion
Topic: Eben Upton on BBC Radio 4 "The Life Scientific"
Replies: 26
Views: 1055

Re: Eben Upton on BBC Radio 4 "The Life Scientific"

Burngate wrote:
Mon Jan 15, 2018 6:18 pm
Irritating - my recorder won't record radio channels!
But will your Pi?

(I'm going to have to wait for the podcast, if I can get it to play. The initial airing will be at 1AM in my timezone.)

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