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by fanoush
Thu Mar 28, 2019 8:59 am
Forum: For sale
Topic: Raspberry Pi Zero smart watch kickstarter
Replies: 7
Views: 3663

Re: Raspberry Pi Zero smart watch kickstarter

Imagine you can have a smartwatch with all the advantages of open source software and hardware. While Zero is great for lot of stuff it is not that good for low power battery projects like smart wrist watch. For that e.g. ESP32 module is much better fit (if you want to build one from scratch) and i...
by fanoush
Thu Mar 21, 2019 6:22 pm
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: Turning off and on individual USB ports on the Raspberry Pi 3?
Replies: 9
Views: 496

Re: Turning off and on individual USB ports on the Raspberry Pi 3?

I am wondering if I can attach a USB fan to one of the USB ports and turn it off and on using a python script. I know this may not be possible due to hardware limitations, but I think it's worth asking. on 3b+ you can turn off two ports and have other two working, would this help? EDIT: forgot that...
by fanoush
Mon Mar 18, 2019 8:07 am
Forum: General discussion
Topic: 3A+ usbboot/rpiboot - already possible?
Replies: 7
Views: 559

3A+ usbboot/rpiboot - already possible?

Hi, there is this locked thread here https://www.raspberrypi.org/forums/viewtopic.php?f=63&t=227044 so I cannot reply to post https://www.raspberrypi.org/forums/viewtopic.php?f=63&t=227044#p1392654 We're just thinking about whether we remove the program_usb_host_boot by default... 4 months passed, w...
by fanoush
Sun Mar 10, 2019 2:02 pm
Forum: Raspbian
Topic: Why is the Raspbian desktop experience so slow?
Replies: 52
Views: 4338

Re: Why is the Raspbian desktop experience so slow?

My comments about my android tablet referred to javascript heavy webpages, which for me is a bigger problem than video acceleration. The slowness on the pi doesn't 'feel' like it is due to excessive memory swapping, but I have nothing to back that up and I'm probably wrong. It is presumably not due...
by fanoush
Fri Mar 08, 2019 3:22 pm
Forum: Off topic discussion
Topic: 1GB Pi3A+?
Replies: 22
Views: 1868

Re: 1GB Pi3A+?

HawaiianPi wrote:
Fri Mar 08, 2019 1:06 pm
fanoush wrote:
Fri Mar 08, 2019 11:59 am
...and two 1GB boards (3a+ 3b+) with the only difference being USB hub+ethernet would not work for them well with prices set to $35 and $25?
Why not?
Because removing usb hub and ethernet from BOM probably doesn't save enough to lower price by $10 and keep same profit? Just a guess.
by fanoush
Fri Mar 08, 2019 11:59 am
Forum: Off topic discussion
Topic: 1GB Pi3A+?
Replies: 22
Views: 1868

Re: 1GB Pi3A+?

Upgrading the Pi3A+ wouldn't be a "new Pi". I guess they will not change prices of latest models and two 1GB boards (3a+ 3b+) with the only difference being USB hub+ethernet would not work for them well with prices set to $35 and $25? When thinking about sensible upgrade, adding 5GHz wifi to Zero W...
by fanoush
Thu Mar 07, 2019 6:58 pm
Forum: Advanced users
Topic: Raspberry Pi SRAM
Replies: 21
Views: 1684

Re: Raspberry Pi SRAM

VC4 caches are wierd because both scalar cores share a 16-way SIMD vector unit - there are 2 vector register files of 64x64 bytes and a single vector unit. so when both vpu cores try to execute vector instructions one of them will stall? will they switch fairly when there are multiple instructions?...
by fanoush
Fri Feb 22, 2019 9:32 pm
Forum: General discussion
Topic: Why must the raspberrypi be so proprietary?
Replies: 44
Views: 2995

Re: Why must the raspberrypi be so proprietary?

Heater wrote:
Fri Feb 22, 2019 9:21 pm
processors were designed by electronics engineers, circuits drawn by hand on paper.
I am surprised you don't see the similarity with what did programmers at that time. Or scientists. You just play with lego bricks until it fits and solves the problem.
by fanoush
Fri Feb 22, 2019 8:59 pm
Forum: General discussion
Topic: Why must the raspberrypi be so proprietary?
Replies: 44
Views: 2995

Re: Why must the raspberrypi be so proprietary?

Bottom line: In the modern world software is hardware, hardware is software. Both need to be open if you want Open. But of course. And it was always like that. Everything vritten in verilog or any HDL is software too. And it always was. Every ASIC design is software. You just draw line in the sand ...
by fanoush
Fri Feb 22, 2019 7:48 pm
Forum: General discussion
Topic: Why must the raspberrypi be so proprietary?
Replies: 44
Views: 2995

Re: Why must the raspberrypi be so proprietary?

RMS has been pretty consistent in his views for a long time. As a result of them being guided by an overriding principle. Well code is code, when it runs it does something. When you cannot change what it does (replace it) it is closed. Why it should matter what storage it is loaded from? How burnin...
by fanoush
Fri Feb 22, 2019 4:04 pm
Forum: General discussion
Topic: Why must the raspberrypi be so proprietary?
Replies: 44
Views: 2995

Re: Why must the raspberrypi be so proprietary?

Does that mean I can now boot a Pi and run Linux without any closed source firmware blobs? Even if some features/performance are missing? https://github.com/christinaa/rpi-open-firmware#does-it-boot-linux This was (years?) before Eric did all the VC4 KMS kernel stuff. I guess if someone tried today...
by fanoush
Fri Feb 22, 2019 3:56 pm
Forum: General discussion
Topic: Why must the raspberrypi be so proprietary?
Replies: 44
Views: 2995

Re: Why must the raspberrypi be so proprietary?

In addition, I share the amusement that, by putting the firmware on the SD card instead of in ROM, the Pi doesn't meet the GNU definition of "open". A lot have been said and repeated over and over about that (IMO quite silly) remark of RMS. Why still waste time with it? Did anyone asked him recentl...
by fanoush
Fri Feb 22, 2019 3:31 pm
Forum: General discussion
Topic: Why must the raspberrypi be so proprietary?
Replies: 44
Views: 2995

Re: Why must the raspberrypi be so proprietary?

The video processor is "secret" in as far as the manufacturer does not publish any documentation for it. I think something is secret if it is not publicly known. So lot of stuff was secret until someone figured it out, documented, wrote assembler for the instruction set, wrote gcc compiler, wrote b...
by fanoush
Fri Feb 22, 2019 12:36 pm
Forum: General discussion
Topic: Why must the raspberrypi be so proprietary?
Replies: 44
Views: 2995

Re: Why must the raspberrypi be so proprietary?

So far I noticed the GPU instruction set is a proprietary secret ..... Those who want to study how software works deeper down are largely prohibited from doing so on this platform. This is not true. There is gcc compiler for VC4 VPU. There is example bootcode.bin firmware . Anyone with enough motiv...
by fanoush
Fri Feb 22, 2019 12:00 pm
Forum: Other
Topic: Windows 10 ARM64 (Dekstop, not IOT)
Replies: 52
Views: 14989

Re: Windows 10 ARM64 (Dekstop, not IOT)

2. Download: Windows10 ARM 1809: This version is known not to work. Or at least this was so week ago . Only 1803 worked for me. But anyway, is is very slow even when CPU clock is raised to Max, starting cmd or powershell or basically anything takes many,many minutes. And this is already after custo...
by fanoush
Mon Feb 18, 2019 8:46 pm
Forum: Networking and servers
Topic: High performance remote connection to a windows 10 machine
Replies: 13
Views: 1112

Re: High performance remote connection to a windows 10 machine

When talking about less usual ways there is also screen streaming used for games, e.g. with good GPU on remote end Steam client can stream 3D games but also whole remote desktop as H.264/MPEG-4 stream in realtime. And recently there was SteamLink client released for Raspberry Pi. I do use it sometim...
by fanoush
Fri Feb 15, 2019 3:26 pm
Forum: The MagPi
Topic: Surprised to see you promoting W10
Replies: 14
Views: 3483

Re: Surprised to see you promoting W10

I tried it and it was really a Windows experience. Making ISO took 3-4 hours, flashing to sd card with this tool took another couple of hours. Then I found the latest stable 1809 version crashes at boot (nice smiley with QR code). Did another round with 1803 version and had plenty of hours of "Pleas...
by fanoush
Fri Feb 15, 2019 3:07 pm
Forum: Off topic discussion
Topic: Is ARM doomed?
Replies: 311
Views: 21541

Re: Is ARM doomed?

w RISC V SoC out: https://hackaday.com/2019/02/14/new-part-day-a-risc-v-cpu-for-eight-dollars/ https://www.seeedstudio.com/sipeed Dual core 64bit CPU with 8MB SRAM looks a bit better than current ESP-32 modules :-) Well unless the RAM is attached over SPI like newest ESP-32 modules with PSRAM alrea...
by fanoush
Thu Feb 14, 2019 6:14 pm
Forum: Troubleshooting
Topic: Do we have a way to invert the logic of the GPIO serial port?
Replies: 17
Views: 1007

Re: Do we have a way to invert the logic of the GPIO serial port?

Usb to serial ttl adapters based on FTDI FT232 chip can set polarity selectively on each pin. There is a tool ft_prog (also for linux ) that can set it. Most such cheap adapters e.g. on ebay are clones but setting tne polarity should work. i have one such cheap adapter and use it with changed polari...
by fanoush
Sun Feb 03, 2019 8:42 am
Forum: Off topic discussion
Topic: Pi 4: Can we **please** have an rtc included?
Replies: 6
Views: 1277

Re: Pi 4: Can we **please** have an rtc included?

messypotamia wrote:
Sun Feb 03, 2019 7:16 am
getting the software right is "a dog's breakfast".
So it looks more like software problem?
by fanoush
Sat Jan 19, 2019 6:30 pm
Forum: General discussion
Topic: new to soldering - safety questions, etc.
Replies: 46
Views: 2719

Re: new to soldering - safety questions, etc.

Not sure if anyone already mentioned it but heat resistant silicone mat is good. I got one few months ago and I am very happy with it. You can solder on it and it won't burn or get damaged even when you melt solder with the tip directly on it - I quickly get used to take advantage of it. I got grey ...
by fanoush
Fri Jan 18, 2019 9:32 am
Forum: Off topic discussion
Topic: Espruino on $9.99 fitness tracker
Replies: 6
Views: 2518

Re: Espruino on $9.99 fitness tracker

That is great to hear. I have been a fan of Espruino since it was launched. So much easier than Micro Python. Well it is event based so there is no main loop where you need to check everything and call stuff yourself. This may bother someone. On the other hand when you don't have multiple threads i...
by fanoush
Thu Jan 17, 2019 9:17 am
Forum: Off topic discussion
Topic: Espruino on $9.99 fitness tracker
Replies: 6
Views: 2518

Espruino on $9.99 fitness tracker

Hi, this is not strictly raspberry pi related (even if I did all the stuff on my Pi 3 and Pi3 or Zero W can easily connect to it) I just think people here might be interested in it. In past half year I've been searching for cheap hackable fitness tracker/smart watch and my drawer is full of $6-$11 b...
by fanoush
Fri Jan 11, 2019 6:33 pm
Forum: Beginners
Topic: RPi UART Usage?
Replies: 3
Views: 253

Re: RPi UART Usage?

I find picocom easier than minicom. It avoids all that modem related stuff and is very simple.
by fanoush
Thu Jan 03, 2019 7:42 pm
Forum: General discussion
Topic: Default swap file size
Replies: 20
Views: 1188

Re: Default swap file size

My question is should this default value be changed or removed? Seems like the config file hasn't been updated since 2010, and this 100 is a very old (and small) value. To me it also seems to be odd choice. It is too small so it is more dangerous than useful. Once both memory and swap is full it go...

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