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by crystal13
Wed Oct 30, 2013 2:03 pm
Forum: Automation, sensing and robotics
Topic: Home automation with RPI for control wired "things"
Replies: 43
Views: 23383

Re: Home automation with RPI for control wired "things"

Hello everyone, after a week of studies, I'm analyzing the solution X10. I'm thinking if this is a convenient way of to do home automation instead that the wifi solution. The reasons are that I'm seeing the prices of the actuator that works on X10 protocol. If you see this, for example: http://www.n...
by crystal13
Thu Oct 24, 2013 9:22 pm
Forum: Troubleshooting
Topic: how can do a Raspberry to trigger a 12VDC relay?
Replies: 15
Views: 4426

Re: how can do a Raspberry to trigger a 12VDC relay?

Hello, thank you to all.....I'm seeing relay that can support 220V AC voltage.

I know that a "solid state relay" and "switch relay" can support 220V AC voltage, so I'm seeing how to connect the RPi to these type of relays.

Does your suggestion of relay support this voltage?

Thank you very much.
by crystal13
Thu Oct 24, 2013 12:26 pm
Forum: Troubleshooting
Topic: how can do a Raspberry to trigger a 12VDC relay?
Replies: 15
Views: 4426

Re: how can do a Raspberry to trigger a 12VDC relay?

@Richard S. ok, I understood... :) Unfortunately I cannot use a "switch relay" by 5VDC .... because this "switch relay" is there only by 12VDC and upper voltage.. @obcd what I want is turn on or turn off my room light using RPi or button, indipendently. RPi can turn on, button can turn off, then but...
by crystal13
Thu Oct 24, 2013 9:25 am
Forum: Troubleshooting
Topic: how can do a Raspberry to trigger a 12VDC relay?
Replies: 15
Views: 4426

Re: how can do a Raspberry to trigger a 12VDC relay?

Thank you to all! All you need is a transistor and a couple of resistors to drive the 12V relay from the 3V3 raspberry gpio's. You will also need to mount a free running diode on the relay coil. That will avoid high voltages when the coil is switched off. Farnell and RS components also have ready ma...
by crystal13
Mon Oct 21, 2013 2:41 pm
Forum: Troubleshooting
Topic: how can do a Raspberry to trigger a 12VDC relay?
Replies: 15
Views: 4426

Re: how can do a Raspberry to trigger a 12VDC relay?

Hello,

are you saying to use the opto-isolator in place of the relay?

If yes, I cannot, because I must use this 12VDC relay....
If no, can you be a more bit clear, please?

thank you very much in advance!
Gianfranco
by crystal13
Mon Oct 21, 2013 2:23 pm
Forum: Troubleshooting
Topic: how can do a Raspberry to trigger a 12VDC relay?
Replies: 15
Views: 4426

how can do a Raspberry to trigger a 12VDC relay?

Hi to all,

I have an 12VDC relay that should triggers from my Raspberry.

I know that the maximum of the pins output of Raspberry are 3.3V and 5V DC.

Is possible to arrive at least 10VDC in easy way?

thank you in advance.
Gianfranco
by crystal13
Thu Oct 10, 2013 7:46 am
Forum: Automation, sensing and robotics
Topic: Home automation with RPI for control wired "things"
Replies: 43
Views: 23383

Re: Home automation with RPI for control wired "things"

Consider this "Arduino Pro Mini" clone on ebay . It is under $4 shipped (!), Hello jbeale, I already know this business, but how can you program the Arduino Pro mini without usb port? I saw the arduino NANO that have the usb for to connect to a PC and can program it, but the price is about 10$. htt...
by crystal13
Wed Oct 09, 2013 5:04 pm
Forum: General discussion
Topic: WIFI chipset for Raspberry: RT5370 or RT8188?
Replies: 8
Views: 14587

Re: WIFI chipset for Raspberry: RT5370 or RT8188?

Ok perfect.

@SirLagz: please, can you tell me where did you buy the adaptor with chipset RT5370? (I would like to know the brand).
Also via private message, if you want....

Thank you to all!
Gianfranco
by crystal13
Wed Oct 09, 2013 3:01 pm
Forum: General discussion
Topic: WIFI chipset for Raspberry: RT5370 or RT8188?
Replies: 8
Views: 14587

Re: WIFI chipset for Raspberry: RT5370 or RT8188?

Thank you Paul.

the polyfuse is present only on Raspberry Pi Rev1?

What can cause the absence of the polyfuse?

thank you very much.
by crystal13
Wed Oct 09, 2013 2:47 pm
Forum: Automation, sensing and robotics
Topic: Home automation with RPI for control wired "things"
Replies: 43
Views: 23383

Re: Home automation with RPI for control wired "things"

Hello,

a question for who use the usb wifi adapter.

Are you using the adapter on external usb hub or are you using it on the RPi usb port?

I ask this because I read that some usb adapter can requires a lot of power and this cause the reboot of RPi.

Thank you.
by crystal13
Wed Oct 09, 2013 10:17 am
Forum: Beginners
Topic: Maximum currents provided by Raspberry
Replies: 1
Views: 348

Maximum currents provided by Raspberry

Hi to all, I searched a lot on web but I never find a clear answer to my question. Is there a document that tells how much current can provide the peripherals of RPi? I would like to know: - how much current can provides each USB port? - how much current can provides GPIO with 3.3V? - how much curre...
by crystal13
Wed Oct 09, 2013 9:53 am
Forum: General discussion
Topic: WIFI chipset for Raspberry: RT5370 or RT8188?
Replies: 8
Views: 14587

Re: WIFI chipset for Raspberry: RT5370 or RT8188?

Ok thank you. At this link: http://elinux.org/RPi_USB_Wi-Fi_Adapters is reported: Note: A Wi-Fi adapter will probably need more power than the Raspberry Pi USB port can provide, especially if there is a large distance from the Wi-Fi adapter to the Wi-Fi Access Point, or it is transferring large amou...
by crystal13
Tue Oct 08, 2013 9:49 pm
Forum: Automation, sensing and robotics
Topic: Home automation with RPI for control wired "things"
Replies: 43
Views: 23383

Re: Home automation with RPI for control wired "things"

Hi to all, I have good news for me. ;) I turned on and turned off a simple led from a webserver that runs on RPi. As you suggest I did this both through LAN cable that through usb wi-fi adapter (Netgear WG111). In this video you can see how I turn on/off via wi-fi adapter: http://www.youtube.com/wat...
by crystal13
Tue Oct 08, 2013 3:27 pm
Forum: Troubleshooting
Topic: How can work ethernet and wifi alternatively on RPi?
Replies: 6
Views: 1324

Re: How can work ethernet and wifi alternatively on RPi?

Hello, I don't know how many amps the adapter use....where I can see it? Anyway I'm looking for to buy a micro/nano wifi adapter (e.g. Edimax). Should it absorb less, right? Ok, I set auto wlan0 and I left allow-hotplug wlan0 Now, the .37 IP is assigned for wlan0 :) But 2 questions: i - in terms of ...
by crystal13
Tue Oct 08, 2013 1:32 pm
Forum: Troubleshooting
Topic: How can work ethernet and wifi alternatively on RPi?
Replies: 6
Views: 1324

Re: How can work ethernet and wifi alternatively on RPi?

Ok thank you for support. With my settings, with lan cable I haven't problem: - If I plug-in, the eth0 take .35 IP - If I plug-out, the eth0 take no IP Instead, with usb wifi adapter I have these behavior: - Everytime I plug-in or I plug-out the adapter, the RPi reboots. Is it normal? - After reboot...
by crystal13
Tue Oct 08, 2013 12:22 pm
Forum: Troubleshooting
Topic: How can work ethernet and wifi alternatively on RPi?
Replies: 6
Views: 1324

Re: How can work ethernet and wifi alternatively on RPi?

Hello, at this moment I control my RPi remotely using a LAN cable on eth0 and a static IP. Now, I want try to control my RPi via usb wifi adapter (I'm using the Netgear WG111 chipset 8187) on wlan0; in this way I control the RPi without to use the LAN cable. So, I configured my /etc/network/interfac...
by crystal13
Tue Oct 08, 2013 9:45 am
Forum: Troubleshooting
Topic: How can work ethernet and wifi alternatively on RPi?
Replies: 6
Views: 1324

How can work ethernet and wifi alternatively on RPi?

Hi to all, I'm reading a lot of guides and documents on how to setup eth0 and wlan0 on RPi, but I don't understand how them can work together. My objective is this: - I want that eth0 works only if the LAN cable is plugged-in. - I want that wlan0 works only if the USB wifi adapter is plugged-in. - I...
by crystal13
Mon Oct 07, 2013 4:30 pm
Forum: General discussion
Topic: WIFI chipset for Raspberry: RT5370 or RT8188?
Replies: 8
Views: 14587

WIFI chipset for Raspberry: RT5370 or RT8188?

Hi to all, I'm looking for a USB wifi adapter for Raspberry. I saw that there are two types of USB wifi adapter: 1) adapter based on chipset RT5370 2) adapter based on chipset RT8188 (e.g. Edimax or TP-LINK) The 2) I read that is plug&play for RPi, so there is not problem. The 1) I read that is diff...
by crystal13
Mon Oct 07, 2013 9:05 am
Forum: Networking and servers
Topic: [Tutorial] Using the RasPi as a WiFi hostspot (8 Nov 12)
Replies: 504
Views: 377994

Re: [Tutorial] Using the RasPi as a WiFi hostspot (8 Nov 12)

Hello,

I read of someone that bought the wifi usb adapter based on RALINK RT5730 chip. I found this:
http://www.ebay.it/itm/221270147995?ssP ... 1423.l2649

Can you tell me if it works fine on Raspberry Pi?

Thank you.
by crystal13
Thu Oct 03, 2013 2:42 pm
Forum: Automation, sensing and robotics
Topic: Home automation with RPI for control wired "things"
Replies: 43
Views: 23383

Re: Home automation with RPI for control wired "things"

Dear friend, last night :D I turned on a led using my Raspberry Pi from my PC that is in same LAN of the RPi, using the line command: gpio -g mode 4 out gpio -g write 4 1 with the led connected on pin #4 of the Raspberry. First step is ok, next step is create the webserver for command the led from m...
by crystal13
Tue Oct 01, 2013 12:12 pm
Forum: Automation, sensing and robotics
Topic: Home automation with RPI for control wired "things"
Replies: 43
Views: 23383

Re: Home automation with RPI for control wired "things"

txt3rob wrote:have you seen my set up with 433mhz remote plugs?
Hello, I don't want use so low frequency devices because are not legal in my country. I'm seeing the system with NRF24L01+ because works at 2.4GHz.

Thanks!
by crystal13
Mon Sep 30, 2013 11:26 pm
Forum: Automation, sensing and robotics
Topic: Home automation with RPI for control wired "things"
Replies: 43
Views: 23383

Re: Home automation with RPI for control wired "things"

@DrFatalis: thank you, I will study your solutions, too. @jsobota: I'm following your idea. You can see my plan in the picture attached. What do you think? I saw your video: you have used RPi+Arduino on same ethernet port for controlling them by tablet. But where I can find tutorial on how to contro...
by crystal13
Wed Sep 25, 2013 4:11 pm
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: Raspberry and NRF24L01 transceiver device
Replies: 18
Views: 9818

Re: Raspberry and NRF24L01 transceiver device

Hello, I resume this my post because after 8 month I see that you have made a lot of progress!! That "pico" have done is own that I had in my mind 8 month ago. I suppose that his work isn't open source. Anyway, I ordered the NRF24L01 mentioned: 1 x NRF24L01+PA+LNA SMA Antenna 2.4G Wireless Transceiv...
by crystal13
Wed Sep 25, 2013 8:57 am
Forum: Automation, sensing and robotics
Topic: Home automation with RPI for control wired "things"
Replies: 43
Views: 23383

Re: Home automation with RPI for control wired "things"

@DrFatalis: can you link me your blog? I can use google translator. :mrgreen: @richiepp: wainting for your development! ;) @jsobota: thank you for your schema! I will study it. So with this schema I can command the RP2 and Arduino+Eth_Shield via webserver (that is on RP1), right? What I should under...
by crystal13
Tue Sep 24, 2013 1:02 pm
Forum: Automation, sensing and robotics
Topic: Home automation with RPI for control wired "things"
Replies: 43
Views: 23383

Re: Home automation with RPI for control wired "things"

OK, to clarify things: I2C and SPI are meant for master/slave connection, no discussion about it. What I meant with "master" and "slave" in the webserver context was that the RPi1 running the webserver can not only display all the data it reads from its own SPI or I2C slaves but it can also poll da...

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