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by mc007ibi
Sat Sep 16, 2017 11:23 am
Forum: General programming discussion
Topic: Simple walkie talkie software over TCP ?
Replies: 19
Views: 5939

Re: Simple walkie talkie software over TCP ?

mbbs1024 wrote:
Fri Sep 15, 2017 5:26 pm

Why use TCP, Voice or video transmission over IP is normally transmitted over UDP because it is real-time and TCP is not suited for real-time signals.
yeah, that's right. thanks!
by mc007ibi
Wed Mar 01, 2017 11:15 am
Forum: General programming discussion
Topic: Simple walkie talkie software over TCP ?
Replies: 19
Views: 5939

Re: Simple walkie talkie software over TCP ?

hey, thank you all. Also the pointer to the rpi-videoconference-demo-os tool was definitely helpful. However, after messing with mumble-talk-pi I went for "mumble" just. It seems stable so far and its funny to abuse our "motioneye" setup for talking to people in that building. thanks again, more lin...
by mc007ibi
Tue Feb 28, 2017 6:21 pm
Forum: General programming discussion
Topic: Simple walkie talkie software over TCP ?
Replies: 19
Views: 5939

Re: Simple walkie talkie software over TCP ?

gonna try netcat tomorrow and will let you know. thanks already so much!
greets
by mc007ibi
Sat Feb 25, 2017 3:41 pm
Forum: General programming discussion
Topic: Simple walkie talkie software over TCP ?
Replies: 19
Views: 5939

Re: Simple walkie talkie software ?

ah, this has to run permanently from command line, no GUI required or even desired :-)
by mc007ibi
Sat Feb 25, 2017 3:37 pm
Forum: General programming discussion
Topic: Simple walkie talkie software over TCP ?
Replies: 19
Views: 5939

Simple walkie talkie software over TCP ?

Hi, I am getting mad about to get a simple voice over TCP/UDP. I'd like to connect 2 PIs microphone/line-out with each other, so that you could speak to each other. Does someone knows some tutorial or easy to use software ? Currently I am stuck with a icecast-server setup (for radio broadcasting) bu...
by mc007ibi
Mon Oct 31, 2016 12:02 pm
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: Simple GPIO performance benchmark
Replies: 33
Views: 23516

Re: Simple GPIO performance benchmark

@fivdi Whoa, how is that ? I thought more cycles are more speed? Anyhow, don't bother. There is btw. built-in support for GPIO in JerryScript but rather experimental. First tests showed slow results and it did run out of memory. They also have a weird native implementation, requiring async functions...
by mc007ibi
Sun Oct 30, 2016 8:50 pm
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: Simple GPIO performance benchmark
Replies: 33
Views: 23516

Re: Simple GPIO performance benchmark

@ fivdi ok, will try that too :D I am eager to figure out why JS is slower by 50% whilst still calling 2 native functions "only". Is that because of node-gyp being slow, or the V8 Js engine? I remember Python's source code written somehow way more lightweight in many aspects than the actually heavy ...
by mc007ibi
Sun Oct 30, 2016 10:00 am
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: Simple GPIO performance benchmark
Replies: 33
Views: 23516

Re: Simple GPIO performance benchmark

@ fivdi: yeah, sorry, the video was incomplete. However, your benchmark script outputs here the same as in your repos's readme : 2.393.533 write ops per second and around 50Kc on the oscilloscope. I am not sure how much GPIO performance is really needed by PI users but i guess people do their time c...
by mc007ibi
Sun Oct 30, 2016 9:29 am
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: Simple GPIO performance benchmark
Replies: 33
Views: 23516

Re: Simple GPIO performance benchmark

Hi, Ash on my head, I think I measured this wrong and my crappy 90$ oscilloscope doesn't measure beyond 1Mhz. with a setting of 0.1V and 0.1ms : - Python gives me 100Kc (0.1MHz) - pigpio gives me 50Kc (node-v4.4.7) not even sure how to translate this right to the numbers the benchmark article but gi...
by mc007ibi
Sat Oct 29, 2016 5:39 pm
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: Simple GPIO performance benchmark
Replies: 33
Views: 23516

Re: Simple GPIO performance benchmark

Ok, got my oscilloscope. I did run just for reference on the recent PI-3 and the code from the original blog: Python: 95 kHz Javascript (uses C binding, see https://github.com/fivdi/pigpio): 50 kHz XBlox (my own visual block language, uses the same pigpio lib): 91 kHz . I am confused about this resu...
by mc007ibi
Mon Oct 24, 2016 12:38 pm
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: Simple GPIO performance benchmark
Replies: 33
Views: 23516

Re: Simple GPIO performance benchmark

Hi, does someone knows who to make such benchmark without a oscilloscope? I would like to run this tests for "Jerry-Script" (a lightweight version of Node-JS) and on the native side the pigpio C library (https://github.com/joan2937/pigpio). Same for Node-JS with the same binding (using https://githu...
by mc007ibi
Mon Oct 24, 2016 9:21 am
Forum: Troubleshooting
Topic: cifs filesystem not supported by the system
Replies: 7
Views: 13182

Re: cifs filesystem not supported by the system

Hi, thanks for the heads up! After digging I found the real problem: I was booting from a USB drive via cmdline.text:root=/dev/sda2 option. In my case there was another kernel in place but the modules were not present in /lib/modules/4.xxx. So I copied those modules over and all works now. That also...
by mc007ibi
Sat Oct 22, 2016 4:15 pm
Forum: Troubleshooting
Topic: cifs filesystem not supported by the system
Replies: 7
Views: 13182

Re: cifs filesystem not supported by the system

Same here! Can't mount a simple windows share. I search the internet and tried all what was recommended. Output when mounting:

sudo mount -t cifs //192.168.1.37/PMaster /PMaster -o user=mc007

mount error: cifs filesystem not supported by the system
mount error(19): No such device
by mc007ibi
Thu Oct 20, 2016 8:34 pm
Forum: General discussion
Topic: Most wanted functions ?
Replies: 6
Views: 1436

Re: Most wanted functions ?

opencv,something you can use here as input trigger:
Image a pic from 2009
by mc007ibi
Thu Oct 20, 2016 8:04 pm
Forum: General discussion
Topic: Most wanted functions ?
Replies: 6
Views: 1436

Re: Most wanted functions ?

regarding OpenCV again, seems most wanted is a block which can do all sorts of tracking. that gives you some basic motion, face and object detectors and trackers. i checked this with VR & AV authoring software and that are the very basic blocks after all. ok! going for that, really nice to have!
by mc007ibi
Thu Oct 20, 2016 10:01 am
Forum: General discussion
Topic: Most wanted functions ?
Replies: 6
Views: 1436

Re: Most wanted functions ?

@hcv90676 OpenCV: At the moment I can't really wrap my head around the idea of having the full OpenCV API as blocks (shown in the picture above) except for building filter pipes with such block language. Most tasks in OpenCV are better done with a real script language. The other bigger trouble is th...
by mc007ibi
Wed Oct 19, 2016 7:17 pm
Forum: General discussion
Topic: How to remotely push a button?
Replies: 10
Views: 6253

Re: How to remotely push a button?

you could do this with some little servo motor, an Arduino, a Wifi shield and wire it over MQTT to some home automation tool. The mechanic requires a little creativity but i am sure you can box it in less than a cigarette sized box. Should be ready to use after a half day of fiddling. I am sure if y...
by mc007ibi
Wed Oct 19, 2016 6:52 pm
Forum: General discussion
Topic: Most wanted functions ?
Replies: 6
Views: 1436

Re: Most wanted functions ?

@broe23. Ok, thanks! I have hundreds of github repos, all being a little harder to navigate compared with a designated home page, but here you go. About too much functionality, I agree; but its pretty naked actually and works the old-school way (ie: different ways to solve the same problem with alwa...
by mc007ibi
Wed Oct 19, 2016 5:43 pm
Forum: Troubleshooting
Topic: OpenCV 3 installations issues
Replies: 6
Views: 2552

Re: OpenCV 3 installations issues

not sure this helps,

i got OpenCV-3 installed after lots of trouble this way:

https://gist.github.com/gbaumgart/99b8f ... ac9fbd2d9d
by mc007ibi
Wed Oct 19, 2016 5:10 pm
Forum: General discussion
Topic: Most wanted functions ?
Replies: 6
Views: 1436

Most wanted functions ?

Hi, I am trying to compile a list of the most wanted functions on the Raspberry-PI. Unrelated but why? I am trying to finish a general purpose authoring software but a bit more adjusted to the daily needs of a Raspberry-PI user. The software is similar to Scratch, just that it looks and works differ...
by mc007ibi
Wed Oct 19, 2016 11:19 am
Forum: Beginners
Topic: simple motion detector project
Replies: 5
Views: 1520

Re: simple motion detector project

Hi, the tutorial (http://www.pyimagesearch.com/2015/05/25/basic-motion-detection-and-tracking-with-python-and-opencv/) using OpenCV will fail because of 2 things: - you will have a hard time to opencv installed on the PI. all tutorials and install scripts fail in one way or another. again, too much ...
by mc007ibi
Wed Oct 19, 2016 9:09 am
Forum: General programming discussion
Topic: Recommended Languages - Big project
Replies: 15
Views: 3057

Re: Recommended Languages - Big project

@heater, hey yeah. fully forgot about this one. let me try :P
by mc007ibi
Tue Oct 18, 2016 7:09 pm
Forum: General programming discussion
Topic: Recommended Languages - Big project
Replies: 15
Views: 3057

Re: Recommended Languages - Big project

Looks the poster is already gone somewhere else with his project :cry: @heater: yes, for a beginner it can be nasty to install things just but as soon it's there, it works pretty well; I agree. About FFT, I have one here in C but I still need to wrap this as native NodeJS module sometime. As much I'...

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