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by tpylkko
Sat Aug 19, 2017 6:00 am
Forum: General discussion
Topic: Radio Streaming Sites
Replies: 3
Views: 856

Re: Radio Streaming Sites

    Maybe look at some of the audio streaming software that people use like http://www.mopidy.com or https://volumio.org

    Both allow you to search for radio stations around the world. Both also serve web frontends meaning that you can use the directly through a browser without vnc
    by tpylkko
    Tue Jul 04, 2017 6:02 am
    Forum: General discussion
    Topic: python script at startup
    Replies: 81
    Views: 12113

    Re: python script at startup

    i dont think i understand what you mean Sorry, I'll explain a bit better. In Linux operating systems you can automatically start programs in many ways. One of these many ways is via the desktop, so that when the graphical interface launches it also starts those other programs. This is good when you...
    by tpylkko
    Mon Jul 03, 2017 11:01 am
    Forum: General discussion
    Topic: python script at startup
    Replies: 81
    Views: 12113

    Re: python script at startup

    I think it sounds like a good idea to start the mqtt as a background system service and run the script autostarted from the desktop, since then the script will run with the pi user and have the same session and environment as when it is run manually. But it will not work when /if you are using a Ras...
    by tpylkko
    Sat Jul 01, 2017 8:00 pm
    Forum: General discussion
    Topic: python script at startup
    Replies: 81
    Views: 12113

    Re: python script at startup

    Ok. I thought you maybe dismissed the suggestion because you perceived it to be 'not good'. And was wondering if you had d some reasoning for it
    by tpylkko
    Sat Jul 01, 2017 7:48 pm
    Forum: General discussion
    Topic: python script at startup
    Replies: 81
    Views: 12113

    Re: python script at startup

    komarek wrote:
    tpylkko wrote:Do you mean that you don't know what a user service is?

    See this for example, then:
    https://wiki.archlinux.org/index.php/Systemd/User
    i never used that
    Why?
    by tpylkko
    Sat Jul 01, 2017 3:37 pm
    Forum: General discussion
    Topic: python script at startup
    Replies: 81
    Views: 12113

    Re: python script at startup

    Do you mean that you don't know what a user service is?

    See this for example, then:
    https://wiki.archlinux.org/index.php/Systemd/User
    by tpylkko
    Sat Jul 01, 2017 2:00 pm
    Forum: General discussion
    Topic: python script at startup
    Replies: 81
    Views: 12113

    Re: python script at startup

    My bet is that your script requires session data, which is not available for a systemd system service. Printing to Log or launching a file does not require a user session, but maybe the auth stuff in your Python does? Have you tried a user service instead of the system one? IIRC, this changed in som...
    by tpylkko
    Sun Jun 25, 2017 8:15 am
    Forum: Beginners
    Topic: Accessing the Pi's CUPS web interface from another computer
    Replies: 4
    Views: 4287

    Re: Accessing the Pi's CUPS web interface from another compu

    But have you tried accessing the web server with the ip in order to rule out a name resolution problem?
    by tpylkko
    Sat Jun 24, 2017 7:32 pm
    Forum: Beginners
    Topic: Accessing the Pi's CUPS web interface from another computer
    Replies: 4
    Views: 4287

    Re: Accessing the Pi's CUPS web interface from another compu

    notice that you are using two distinct domain names for the box. which one is it? maybe use the ip address instead, if you don't know. Or am I misundertanding your setup? It appears that you have a rpi with name .local but you are trying to access .lan. If you are using pi3.local then use http://pi3...
    by tpylkko
    Mon Jun 12, 2017 5:40 am
    Forum: General discussion
    Topic: Is Python the only smart choice for micro-controllers?
    Replies: 25
    Views: 4409

    Re: Is Python the only smart choice for micro-controllers?

    Not only is Python not the only smart choice for micro-controllers it is a mind numbingly bad choice. MicroPython is quickly making its mark. Don't end up on the wrong side of history. I'm not sure that makes it a good choice, MicoPython like Arduino is probably good at getting beginners going (I'v...
    by tpylkko
    Sat May 27, 2017 6:44 am
    Forum: Beginners
    Topic: Can data be sent through GPIO?
    Replies: 4
    Views: 695

    Re: Can data be sent through GPIO?

    The rain gauge (or any other sensor) will output its data through an interface its designers thought most useful. If you know - or can find out - what that interface that is, you can program the Pi to accept that and use the data. You may find that it uses one of the more common interfaces - I2C, S...
    by tpylkko
    Thu May 25, 2017 8:53 pm
    Forum: Off topic discussion
    Topic: RISC-V Arduino is here.
    Replies: 9
    Views: 2157

    Re: RISC-V Arduino is here.

    I'm really pleased to see a RISC V board released. However I'm wondering about the sanity of the Cinque. That board has a ESP32 on it. The ESP32 contains two 32 bit cores running at 240MHz, plus half a megabyte of RAM, plus 16 MByte flash, plus 32 GPIO and a ton of other stuff. Besides the wireless...
    by tpylkko
    Tue May 23, 2017 8:12 am
    Forum: General discussion
    Topic: Is the Raspberry Pi a good ePaper platform?
    Replies: 13
    Views: 3441

    Re: Is the Raspberry Pi a good ePaper platform?

    Okay, let me clear that up a bit. What you are talking about is the UNO v.s. something like the 101. No exactly. What I was saying is that CarlRJ's claim that Arduino products are baremetal code running microcontroller's and do not have realtime OS's is not true anymore. But maybe this could be dro...
    by tpylkko
    Fri May 19, 2017 6:38 pm
    Forum: General discussion
    Topic: I2S audio data word length (16 or 24 bit?)
    Replies: 2
    Views: 752

    Re: I2S audio data word length (16 or 24 bit?)

    why? would that not depend on the DMA controller?
    by tpylkko
    Thu May 18, 2017 7:40 pm
    Forum: General discussion
    Topic: Is the Raspberry Pi a good ePaper platform?
    Replies: 13
    Views: 3441

    Re: Is the Raspberry Pi a good ePaper platform?

    Not sure what you mean with them not being "true Arduinos". But they are official Arduino AG designed and recognized projects. Actually I believe they consider the real (old) 8-bit avr's "legacy" as their own shop appers to not have them (although since the license is open anyone can make one and yo...
    by tpylkko
    Tue May 16, 2017 9:48 am
    Forum: General discussion
    Topic: Is the Raspberry Pi a good ePaper platform?
    Replies: 13
    Views: 3441

    Re: Is the Raspberry Pi a good ePaper platform?

    I think that the RPi is not a particularly good ePaper platform. Mainly because ePaper are slow (refresh latency) and low power, and as such are perfect for controller devices that sleep much and update the screen with low frequency. Like something that fetches weather/stock/whatever data once an ho...
    by tpylkko
    Thu May 04, 2017 3:40 pm
    Forum: Automation, sensing and robotics
    Topic: Temperture and Humidity Web Monitor
    Replies: 4
    Views: 6220

    Re: Temperture and Humidity Web Monitor

    In a way, a much more easier and eloquent (but also more common now) solution is to send that data with MQTT to a server like mostquitto or a cloud. Then you can plot the data with any of the already existing applications for phones, browsers whatever. But this does look nice for when you don't a bu...
    by tpylkko
    Mon Apr 24, 2017 9:14 pm
    Forum: Advanced users
    Topic: Auto poweroff when power bank low?
    Replies: 6
    Views: 2370

    Re: Auto poweroff when power bank low?

    and then there is also a whole bunch of workarounds for this problem and vendors at various pi-selling shops that sell specialized hardware to do ready-made.
    by tpylkko
    Fri Apr 21, 2017 2:19 pm
    Forum: General discussion
    Topic: So Many Languages, so little Time
    Replies: 28
    Views: 4549

    Re: So Many Languages, so little Time

    Luckily there is considerable overlap in various languages. If you are thinking about what language is the best being able to do as many things as possible and you are not working in some professional environment where you have to use specific things, then Python. Maybe C if you are interested in mi...
    by tpylkko
    Thu Apr 13, 2017 8:00 pm
    Forum: Other projects
    Topic: Turn on and off your PC with a raspberrypi
    Replies: 30
    Views: 22176

    Re: Turn on and off your PC with a raspberrypi

    the pi could also automatically send a shutdown command (to shutdown gracefully) and control a hardware relay to fully unplug the computer and later turn it on.
    by tpylkko
    Thu Apr 13, 2017 5:32 am
    Forum: Other projects
    Topic: Turn on and off your PC with a raspberrypi
    Replies: 30
    Views: 22176

    Re: Turn on and off your PC with a raspberrypi

    If you don't say why you want to do this, it is harder to answer your question. There are a million ways it could be done. For example, let's say you want the pi to do it because you can automate the pi and keep it on 24/7 due to its low power usage. Then you could have a .timer on the RPI and have ...
    by tpylkko
    Thu Apr 13, 2017 5:25 am
    Forum: Beginners
    Topic: Can the pi run Debian with gnome 3?
    Replies: 13
    Views: 7418

    Re: Can the pi run Debian with gnome 3?

    Just try it, then you will understand what I mean. The answer to the question is: yes KDE can be installed.
    by tpylkko
    Thu Apr 13, 2017 5:20 am
    Forum: Advanced users
    Topic: Moving Linux kernel to 4.9
    Replies: 289
    Views: 119521

    Re: Moving Linux kernel to 4.9

    I like the way it works now. I just think the RPF folks should remove rpi-update so that folks have to positively do something (and hopefully think about it) to get rpi-update running. Then apt-get install rpi-update can give them the details of why they really won't want to run rpi-update. In case...
    by tpylkko
    Thu Apr 13, 2017 5:15 am
    Forum: Advanced users
    Topic: Run Python script at startup
    Replies: 1
    Views: 560

    Re: Run Python script at startup

    There are many ways to run a python script at startup. The way I have been doing it is by creating a .service file with where I send a command string to the python interpreter. Then I use a .timer file to start it at boot. The problem with printing a text to the display, is though, that where will y...
    by tpylkko
    Wed Apr 12, 2017 7:10 pm
    Forum: Other projects
    Topic: Turn on and off your PC with a raspberrypi
    Replies: 30
    Views: 22176

    Re: Turn on and off your PC with a raspberrypi

    why would you ever want to do this? why would you not just 1) turn of the pc from the switch, or 2) have it turn itself off or 3) serve a web page form the pc that allows you to turn it off?

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