Raspberry Pi Forums

tpylkko

However, it was just recently posted on the blog that Docker has "officially included Raspbian Jessie installation support". https://www.raspberrypi.org/blog/page/2/?fish#docker-comes-to-raspberry-pi Apparently, and according to the blog, this means curl -sSL https://get.docker.com | sh It's worth l...

tpylkko

so... what are the benefits of a full USB boot? I was thinking speed, but not looking that way... Steve in addition to other the possible benefits already mentioned (reliabilty, costs etc.), one could add that the sd-card slot would then be free for other uses. not everyone is going to have use for...

tpylkko

That script never really worked fully automatically, but was more intended as a guide for people that wanted to construct PMB manually on older versions of Raspbian. There is a ready-to-go image that you can just write to a card on the home page of PMB. However, it is antiquated, the image is built ...

tpylkko

You could also use a timer (systemd) since cron might be deprecated on the next Raspbian (stretch).

tpylkko

The cards could be coerupted over and over again by faulty ram or by bad writes due to bad power or overclocking and such. If the sd drive is the problem, you could try moving everything possible off the card to a usb drive

tpylkko

I don't know if you realize, but corrupted data does not need to mean that the hardware is bad. It certainly can be because the sd-card is broken, but can also be that there is nothing wrong with the card and that re-imaging it or fixing the corrupted data could suffice.

tpylkko

Your script may be trying to do something that cannot be done in early boot, in which case rc.local is not good. With systemd service files you could have more control over when and with what permissions the script runs. But maybe you are on an OS that does not have systemd? http://www.raspberrypi-s...

tpylkko

Which pi model is this? Also, you could just get an arduino and connect it to the pi and then the sensors to the arduino.

tpylkko

Es importante entender que el problema no es el amperaje, sino que el voltage. Existe cargadores de alta amperaje que not pueden mantener un voltage constante.

tpylkko

En primer lugar, perdona mi español, no soy un nativo. El "cuadrado de colores" significa que el voltaje es demasiado baja. Probablemente, esto se debe a que está utilizando un cargador. Los cargadores están diseñados ( desgined ? construyidos con la intención de) para cargar las baterías y por lo t...

tpylkko

I want to just quickly say something here. I realize that wireless audio systems sold by companies like Sony are expensive. Clearly making something like you suggest would be possible and work. The only problem I see... is that already right now anyone can make such a system, and many have. There ar...

tpylkko

this is probably a "daemon" or a background service that is started by systemd. you can either have the service depend on another late starting service or use a timer and have it start at some seconds after boot, for example. more in "man systemd.timer" -> OnBootSec= / OnStartupSec= see this thread ...

tpylkko

I have never heard of anyone having this problem, and maybe it is because over here it is common for everyone to have a limitless mobile plan (4G) of their own. To me it seems that young people don't even know what wifi is anymore...

tpylkko

also have a look at
http://webiopi.trouch.com/

tpylkko

https://nodejs.org/en/

tpylkko

Many routers have a web page interface that can list all currently connected devices, but possibly also a connections log of previous connections. Therefore, you could possibly have a raspberry on that lan that runs a script that scrapes that page and then emails that data to you. If the router runs...

tpylkko

Use the simpler GPIO zero library and look at this example: from gpiozero import LED, Button from signal import pause led = LED(17) button = Button(3) button.when_pressed = led.on button.when_released = led.off pause() Only make button.when_pressed display the home page? So, do you want the hompeage...

tpylkko

You might want to use the gpio zero library instead.

https://gpiozero.readthedocs.org/en/v1.2.0/

An example of blinking leds:

https://www.raspberrypi.org/learning/ph ... worksheet/

tpylkko

you could also use avr microcontrollers that can be ran on batteries like CR2032. http://www.robotroom.com/Weather-Station.html then only send the data at rare intervals to the pi and have it serve the data and run the server, as mentioned earlier. These are really cheap, often costing less than a d...

tpylkko

I have microsoft basic optical mouse v2, which is really simple but it has worked on RPi models A+. B+ 2 and 3.

tpylkko

You can do this with package managers. Raspbian comes with apt installed. Type: man man To learn about software manuals and to learn about apt try its own manual: man apt Some examples from the above manual: Search for package by key word (in this example "dvd"): sudo apt-cache search dvd Look at wh...

tpylkko

Also (wtihout cron):

https://www.freedesktop.org/wiki/Softwa ... orkTarget/

tpylkko

Yeah, but to be fair, such books are always written on outliers because they are more fascinating. For those two people it worked, but how many thousand people in similar situations exist for whom something similar didn't work? No books written on them... I get what you are saying though that learni...

tpylkko

How do you 'practice' writing software? You either write it, or you don't. I've simply learnt stuff as I have needed to use stuff. I suppose you could read up on stuff, and try to implement stuff you read about, but why? What I've tended to do is read about stuff, then use it when I need to. C++ te...

tpylkko

You don't practice programming. You program and learn more in the process and the time you take all depends on what you're doing. this probably works if you are hobbyist, but if you want to learn programming skills in a broad sense and to a high level (i.e professional) then you are going to need t...

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