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by ValterFukuoka
Tue Dec 17, 2019 11:01 pm
Forum: Teaching and learning resources
Topic: RPIZero & WebTorrent P2P DATA Cloud
Replies: 1
Views: 1699

Re: RPIZero & WebTorrent P2P DATA Cloud

...WebTorrent can work together with Bittorrent... WebTorrent itself is a protocol based on the same algorithm of Bittorrent. WebTorrent use WebRTC as the basic mechanism of communication, and since WebRTC was born to be used in webbrowsers, there is a mechanism to call/control WebRTC using JavaScri...
by ValterFukuoka
Wed Oct 23, 2019 2:34 am
Forum: Teaching and learning resources
Topic: RPIZero & WebTorrent P2P DATA Cloud
Replies: 1
Views: 1699

RPIZero & WebTorrent P2P DATA Cloud

Hi, just want to post another idea related to RPI Zero and a possible P2P Cloud... It is related to another post: RPIZero and P2P METADATA Cloud ( https://www.raspberrypi.org/forums/viewtopic.php?f=49&t=254228 ), and yet it is also totally independent from the point of view of usage, so I am placing...
by ValterFukuoka
Mon Oct 14, 2019 5:01 pm
Forum: Teaching and learning resources
Topic: RPIZero & WebRTC P2P Metadata Cloud
Replies: 1
Views: 1746

Small VideoClip

Added a small video clip showing how to run the scripts...

Download, unzip and watch. MP4, size 11MB.
https://github.com/t2age/webrtc-easy-po ... /videoclip

Valter
by ValterFukuoka
Sun Oct 13, 2019 1:28 pm
Forum: Teaching and learning resources
Topic: RPIZero & WebRTC P2P Metadata Cloud
Replies: 1
Views: 1746

RPIZero & WebRTC P2P Metadata Cloud

Hi, just want to say that I was able to get WebRTC (Web Real Time P2P Communication) NodeJS command line module running on a Raspberry PI Zero. The module already support ARMv7+ (PI2, PI3, etc), but requires a compilation from source code to work with the ARMv6 PIZero. WebRTC is already running on R...
by ValterFukuoka
Fri Sep 27, 2019 4:27 am
Forum: Bare metal, Assembly language
Topic: RPIZero Chromium binary question...
Replies: 6
Views: 1409

Re: RPIZero Chromium binary question...

Also, later, I will add a very simple sample of WebRTC DataChannel between 2 RasPIs, I am building some picts/diagrams, so that, hopefully, anybody can follow and test the sample, as well as adapt and use it in real RPI stuff... Regards. Valter Done! https://github.com/t2age/webrtc-easy-power Very ...
by ValterFukuoka
Wed Sep 25, 2019 10:47 am
Forum: Bare metal, Assembly language
Topic: RPIZero Chromium binary question...
Replies: 6
Views: 1409

Re: RPIZero Chromium binary question...

Hi. I am building a small tutorial on how to compile the Node WRTC Module (and WebRTC Library) from source, targeting armv6 RaspberryPI Zero, here: https://github.com/t2age/webrtc-armv6 I don't have yet the tests scripts but I think that this is the way to go because there seems to be very little ac...
by ValterFukuoka
Wed Sep 25, 2019 10:31 am
Forum: Advanced users
Topic: RPIZero arm1176jzf-s machine code...
Replies: 2
Views: 398

Re: RPIZero arm1176jzf-s machine code...

Just want to say that I am building a little tutorial here (github) about the compilation steps for the Node WRTC Module for the Raspberry PI Zero: https://github.com/t2age/webrtc-armv6 I still not have an answer for the question above, but I have decided to try some sort of "brute force" method, by...
by ValterFukuoka
Thu Sep 19, 2019 12:57 am
Forum: Bare metal, Assembly language
Topic: RPIZero Chromium binary question...
Replies: 6
Views: 1409

Re: RPIZero Chromium binary question...

I don't know for a fact, but it may have runtime detection NEON support, which would result in a false positive. We disable it in our builds[1], but given the large code base and number of statically linked libraries, who knows. [1] https://github.com/RPi-Distro/chromium-browser/blob/master/debian/...
by ValterFukuoka
Thu Sep 19, 2019 12:29 am
Forum: Bare metal, Assembly language
Topic: RPIZero Chromium binary question...
Replies: 6
Views: 1409

Re: RPIZero Chromium binary question...

It has a long convoluted ARM story behind it and the intrinsics of the various libraries and not worth going into. All you probably need to know is the differences https://wiki.debian.org/ArmHardFloatPort/VfpComparison Any VPF2 code will run on a VPF3 system. Thanks for the link... What makes the m...
by ValterFukuoka
Wed Sep 18, 2019 3:26 am
Forum: Bare metal, Assembly language
Topic: RPIZero Chromium binary question...
Replies: 6
Views: 1409

RPIZero Chromium binary question...

Hi, I have asked a related question few days ago, but this time I want to ask specific about Chromium-Browser for RasPI Zero (armv6). The reason is that the information is important for what I am doing (compiling WebRTC from sources for the RasPI Zero). The following is the output from "readelf -A" ...
by ValterFukuoka
Fri Sep 13, 2019 6:46 pm
Forum: Advanced users
Topic: RPIZero arm1176jzf-s machine code...
Replies: 2
Views: 398

Re: RPIZero arm1176jzf-s machine code...

Looking at Chromium inside a Buster RaspberryPI Zero, there seems to be 2 versions; one is probably the v6 version, and the other is marked v7... The v6 version, also, gives the same result that I am talking about above... "VFPv3" and "NEONv1" instructions... while the v7 shows arm-v7 cpu-name/arch....
by ValterFukuoka
Fri Sep 13, 2019 12:23 am
Forum: Advanced users
Topic: RPIZero arm1176jzf-s machine code...
Replies: 2
Views: 398

RPIZero arm1176jzf-s machine code...

Hi, I am compiling NodeJS module WebRTC (node-wrtc) from source to target the armv6zk (arm1176jzf-s), the RPIZero CPU. As part of the compilation, it is necessary to compile WebRTC code itself to target the armv6zk. Both codes, the NodeJS module and WebRTC, are compiled with flags/arguments march="a...
by ValterFukuoka
Fri Aug 30, 2019 10:29 pm
Forum: General discussion
Topic: RPI Zero WH - Raspbian Buster - Firefox not starting...
Replies: 7
Views: 722

Re: RPI Zero WH - Raspbian Buster - Firefox not starting...

I can't spot anything obvious in those messages. (Maybe @jdonald can). I suggest that you try some simple things first. Make a safety copy of your entire .mozilla directory. Default is /home/pi/.mozilla. Start from the command line with firefox-esr -safe-mode which starts without extensions. Probab...
by ValterFukuoka
Fri Aug 30, 2019 9:25 pm
Forum: General discussion
Topic: RPI Zero WH - Raspbian Buster - Firefox not starting...
Replies: 7
Views: 722

Re: RPI Zero WH - Raspbian Buster - Firefox not starting...

Firefox esr crashes on my Zero W as well. I don't normally need a browser for what I'm doing with the W, so I didn't follow up. Chromium works --- slowly. Hi, knowing that my case is not an insulated event helps... hopefully more people can share if they experienced success or failure... Looks like...
by ValterFukuoka
Fri Aug 30, 2019 4:23 pm
Forum: General discussion
Topic: RPI Zero WH - Raspbian Buster - Firefox not starting...
Replies: 7
Views: 722

Re: RPI Zero WH - Raspbian Buster - Firefox not starting...

Infos about error msg and firefox-esr infos on RPIzero: [terminal msg] [email protected]:~ $ firefox-esr ExceptionHandler::GenerateDump cloned child 1666 ExceptionHandler::SendContinueSignalToChild sent continue signal to child ExceptionHandler::WaitForContinueSignal waiting for continue signal... [GUI...
by ValterFukuoka
Fri Aug 30, 2019 4:09 pm
Forum: General discussion
Topic: RPI Zero WH - Raspbian Buster - Firefox not starting...
Replies: 7
Views: 722

Re: RPI Zero WH - Raspbian Buster - Firefox not starting...

The Zero has only half as much RAM. How much have you reserved for graphics? How much is left in total before you try to run Firefox? Have you tried typing "firefox" in a terminal to get an error message? Thanks for replying. The split was 64/total, now I changed to 16/total... I did try GUI and CL...
by ValterFukuoka
Fri Aug 30, 2019 2:04 pm
Forum: General discussion
Topic: RPI Zero WH - Raspbian Buster - Firefox not starting...
Replies: 7
Views: 722

RPI Zero WH - Raspbian Buster - Firefox not starting...

Hi.

Is Firefox-esr running on a Raspberry PI Zero on Raspbian 10 Buster?

I can run it on a RPI 3, tested, but it DOES NOT RUN on a RPI Zero...
Is it a problem with my installed OS, or something related to RPIZero/Firefox?

Thanks,
Valter
by ValterFukuoka
Fri Sep 22, 2017 6:07 am
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: i2s mic & USB mic cpu usage compare
Replies: 0
Views: 554

i2s mic & USB mic cpu usage compare

Hi, I did some searchs on the forum looking for any possible cpu overhead comparison between capturing audio with a i2s microphone and capturing audio with a USB audio adapter with microphone… lots of messages with i2s but could not find any directly related to cpu/resources usage… Does anybody have...
by ValterFukuoka
Mon Sep 01, 2014 9:56 am
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: Raspberry Pi PIC Programmer using GPIO
Replies: 102
Views: 45231

Re: Raspberry Pi PIC Programmer using GPIO

Hi, Recently, I was surfin' the interweb and came across you webpage about using the pi as a pic programmer. It just so happens though that I have a load of pic microcontrollers that I have no means of programming. They are called Pic16c84. Would it be possible to program them using this method at ...
by ValterFukuoka
Sat Jan 18, 2014 2:43 pm
Forum: Automation, sensing and robotics
Topic: Add small cpu for R/C servo controlled
Replies: 124
Views: 43666

Re: Add small cpu for R/C servo controlled

Hi everybody, just want to report the first beta release of PC version of the burnLVP programmer, the “pcBurnLVP” which runs on a regular PC and uses a USB programmer (picture)… https://dl.dropboxusercontent.com/u/29669031/psclub/mpb/simple_micro_PIC_burner_LVP_progPins_bb.jpg To help beginners we d...
by ValterFukuoka
Wed Jan 01, 2014 11:09 am
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: Raspberry Pi PIC Programmer using GPIO
Replies: 102
Views: 45231

Re: Raspberry Pi PIC Programmer using GPIO

Hi zeevy, don't know this is correct or not but this worked for me (read and write) #define PIC16F688 0x1180 const struct picmicro pic16f688 = {PIC16F688, "pic16f688", 0x400, 256, 2500, 6000, 8000, 8000, 0x00, 0x02, 0x03, 0x04, 0x05, 0x06, 0xFF, 0x08, 0x09, 0x0B, 0x0A, 0x1F}; const struct picmicro *...
by ValterFukuoka
Wed Jan 01, 2014 12:46 am
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: Raspberry Pi PIC Programmer using GPIO
Replies: 102
Views: 45231

Re: Raspberry Pi PIC Programmer using GPIO

does this supports 16f688? Hi zeevy, the list I am testing is below... #define PIC16F84A 0x0560 #define PIC16F627A 0x1040 #define PIC16F628A 0x1060 #define PIC16F648A 0x1100 #define PIC16F870 0x0D00 #define PIC16F871 0x0D20 #define PIC16F872 0x08E0 #define PIC16F873 0x0960 #define PIC16F874 0x0920 ...
by ValterFukuoka
Wed Dec 18, 2013 12:09 am
Forum: Python
Topic: ASCII Encoding Error
Replies: 2
Views: 1387

Re: Snap! - can we get it to run on the RPi

hello everyone, i have puchased a pulse sensor wich i have connected to an ADC called MCP3008 through RPi as RPi dont have any ADC converter. i have downloded SPI and GPIO library to run the code bellow. But every time i run it showing me ASCII encoding error. i have tried to fix that with adding a...
by ValterFukuoka
Fri Dec 13, 2013 10:55 pm
Forum: Other programming languages
Topic: Snap! - can we get it to run on the RPi
Replies: 15
Views: 12610

Re: Snap! - can we get it to run on the RPi

If you pop over to the scratch forum thread I mentioned above you'll see that I managed to fix the problem with BYOB so you can now try it out on your pi. It seems to me that you are wanting pretty much what Enchanting, S4A and the Open University TU100 course people have been making. We really sho...
by ValterFukuoka
Thu Dec 12, 2013 12:37 am
Forum: Other programming languages
Topic: Snap! - can we get it to run on the RPi
Replies: 15
Views: 12610

Re: Snap! - can we get it to run on the RPi

Let me ask you one question: What do you think is the "common ground" here, what is the option that will be "most compatible" (cross-platformness so to speak) amongst the current "visual block options"? My goal is to have a good (as platform independent as possible) option for this "visual block" t...

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