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by gjs
Mon May 19, 2014 11:02 pm
Forum: General discussion
Topic: Replicate a remote RPi
Replies: 6
Views: 1503

Re: Replicate a remote RPi

That worked perfectly! With the exception that a dynamic dns client I had on the machine hosed my dns when it started up on the new RPi on the local network, but that is a different story.

Thanks.
by gjs
Sun May 18, 2014 6:30 pm
Forum: General discussion
Topic: Replicate a remote RPi
Replies: 6
Views: 1503

Re: Replicate a remote RPi

Great, thanks, I will give it a try. Once I have got the image, how can I write it to an SD card on a Windows machine (I only have windows machines with SD card slots)? Will the file be compatible with win32diskimager utility?
by gjs
Sun May 18, 2014 2:55 pm
Forum: General discussion
Topic: Replicate a remote RPi
Replies: 6
Views: 1503

Re: Replicate a remote RPi

Thanks for the reply. The SD card on the remote machine is 4GB in size with 54% free. It also has a 4 GB USB flash drive installed with 3.5GB free. Distro is Rasbian. Internet conections are minimum 10Mbps up/down, both ends. IPs are public, there is a NAT router at each end but have full contro ove...
by gjs
Sun May 18, 2014 11:29 am
Forum: General discussion
Topic: Replicate a remote RPi
Replies: 6
Views: 1503

Replicate a remote RPi

Is there any way to capture the complete image of a remote Raspberry Pi? Connection to it is via the Internet with full admin rights. I want to create a new local RPi but using the image from the remote machine without having to physically go and get the sd card from it.

Thanks.
by gjs
Sat Apr 05, 2014 8:54 pm
Forum: Off topic discussion
Topic: Further Education Advice
Replies: 1
Views: 701

Further Education Advice

'Not sure if this is the right place to ask this but what's the worst that can happen? I have worked in telecoms all my career (30 yrs). In that time I have done a lot of IT work, both for my employers and as small side businesses. This has all been self taught. I am thinking of trying for an IT job...
by gjs
Sat Nov 16, 2013 9:24 am
Forum: Off topic discussion
Topic: Windows Serial Console
Replies: 2
Views: 1125

Windows Serial Console

On the RPi, the serial port is, by default, a console to which a terminal can be connected. Is there no equivalent to this in Windows? How can I get to a command prompt on a headless windows box if the network adapter is not working?

Thanks for any help.
by gjs
Sun Oct 20, 2013 10:51 am
Forum: Camera board
Topic: Video from RPi in web browser
Replies: 0
Views: 595

Video from RPi in web browser

I'm sure this has been asked already but I can't find it. Can anyone point to some instructions on how to stream video from the RPi and camera board so that it can be viewed in a web browser, ideally on multiple platforms (Windows, MAC, mobile etc.)? I am trying to effectively make an IP camera that...
by gjs
Sun Oct 13, 2013 2:44 pm
Forum: Automation, sensing and robotics
Topic: PJSIP Binaries for Speech Dialler
Replies: 1
Views: 961

PJSIP Binaries for Speech Dialler

I would like to try using PJSIP to make a VoIP based speech dialler using a Pi. PJSIP is only available as source code from the project web site so it has to be compilled for the Pi. Has anyone done this and/or know where I could find binaries? I've no clue how to compile it myself. Or can someone s...
by gjs
Tue Sep 03, 2013 4:05 pm
Forum: Python
Topic: Detect if running on RPi
Replies: 13
Views: 9087

Re: Detect if running on RPi

Great, thanks.
by gjs
Tue Sep 03, 2013 12:57 pm
Forum: Python
Topic: Detect if running on RPi
Replies: 13
Views: 9087

Re: Detect if running on RPi

Do all Linux distributions have /proc/cpuinfo ?
by gjs
Sun Sep 01, 2013 9:24 am
Forum: Python
Topic: Detect if running on RPi
Replies: 13
Views: 9087

Re: Detect if running on RPi

Thanks for your replies. The uname command is probably the least definate as it returns unknown for the processor and hardware-platform items. Using the MAC address won't work on a model A, as stated. Grepping cpuinfo seems the best option as it returns the SOC name. However, all of these rely on OS...
by gjs
Sun Sep 01, 2013 1:56 am
Forum: Python
Topic: Detect if running on RPi
Replies: 13
Views: 9087

Detect if running on RPi

From my python program, how can I determine if the program is running on a Raspberry Pi instead of, for example, a Beaglebone?

Thanks.
by gjs
Sat Aug 31, 2013 12:55 am
Forum: Other programming languages
Topic: Is Windows mobile platform easiest for developers?
Replies: 7
Views: 2634

Re: Is Windows mobile platform easiest for developers?

If you are familiar with Visual Studio there is virtually no learning curve to windows phone development. Plus VS is the most productive IDE I have been able to find. Also note you can run your programs on android and ios using mono.
by gjs
Mon Aug 26, 2013 5:11 pm
Forum: Python
Topic: Asyncronous call to RPi.GPIO
Replies: 3
Views: 927

Re: Asyncronous call to RPi.GPIO

Thanks for your suggestion paddyg. Correct me if I'm wrong but would this allow the main loop to potentially hold up switching off the LED, so it wouldn't flash for the desired duration, i.e. if the main loop doesn't repeat in less than the desired on time?
by gjs
Mon Aug 26, 2013 9:58 am
Forum: Python
Topic: Asyncronous call to RPi.GPIO
Replies: 3
Views: 927

Asyncronous call to RPi.GPIO

I would like to flash an LED momentarily for each iteration of the main loop. Duration of the flash would be, say, 100ms but I don't want to block the main loop for that time. So I need something like an asynchronous function that runs in parallel to the main loop. Can anyone provide an example of h...
by gjs
Fri Aug 09, 2013 10:53 pm
Forum: Python
Topic: Visual Basic kind of GUI builder for Python
Replies: 4
Views: 9369

Re: Visual Basic kind of GUI builder for Python

Visual Basic 6 was released 15 years ago. Quite why anyone would think the OP would be using this is beyond me. The current VB, known generally as VB.NET is a fully OO language with an extremely mature and comprehensive IDE. It is nothing like VB6. HelpMe: I have not found anything nearly as capable...
by gjs
Sun Aug 04, 2013 1:21 pm
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: Which UART Enabled by Default
Replies: 4
Views: 1801

Re: Which UART Enabled by Default

Sorry, I meant MAX3488.
by gjs
Sun Aug 04, 2013 8:52 am
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: Which UART Enabled by Default
Replies: 4
Views: 1801

Re: Which UART Enabled by Default

Thank you, jojopi.

I want to implement a full duplex RS422 port using a MAX 3422 chip without hardware flow control so the default UART1 should be fine for this without setting the alternate functions of GPIO pins 30/31.
by gjs
Sat Aug 03, 2013 10:32 pm
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: Which UART Enabled by Default
Replies: 4
Views: 1801

Which UART Enabled by Default

Can anyone tell me definitively which UART, the mini-UART or the more full featured UART with the larger buffers and CTS/RTS, is enabled by default with a bog standard Raspbian OS? Also, which one of the UARTs is UART0 and which is UART1? I have found conflicting reports on the forums so please only...
by gjs
Thu Mar 14, 2013 1:37 pm
Forum: General discussion
Topic: Raspberry Pi as a console for a PC
Replies: 0
Views: 388

Raspberry Pi as a console for a PC

I have recently had trouble with a remote PC such that I needed to change BIOS settings. I'm wondering if I could use a RPi as a remote console? General idea would be SSH to the Pi then have it send characters to the PC, so connect the Pi's UART to the keyboard PS2 port, but then what about video ou...
by gjs
Mon Feb 25, 2013 8:37 pm
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: RS422 Port
Replies: 9
Views: 13353

Re: RS422 Port

I want to avoid using USB, it's totally OTT in my view for a single port. I'm sure it is the correct solution for many ports. I don't have a diagram bu the circuit is very simple. RS422 in on pins 7 & 8 of the MAX422, +5V supply (shared with the RPi) to pin 1, GND to pin 4. TTL out on pin 2 of the c...
by gjs
Mon Feb 25, 2013 12:29 am
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: RS422 Port
Replies: 9
Views: 13353

RS422 Port

I am trying to fit the RPi with a full duplex RS422 port to comunicate with a GPS receiver. So far I seem to have destroyed UART 0 on two RPis so I'm getting a little desperate! I have been using the MAX488 chip with a potential divider between the TTL output and the RX pin on the RPi. I had this wo...
by gjs
Wed Feb 20, 2013 10:43 am
Forum: General discussion
Topic: Operating Temperature Range?
Replies: 7
Views: 13211

Re: Operating Temperature Range?

If you leave the RPi running continuoulsy you shouldn't have any problems. If you need to power it down for some reason there are thermistor based heaters you can buy for frost protection.
by gjs
Thu Jan 31, 2013 11:49 pm
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: Sense LEDs on external device
Replies: 13
Views: 3112

Re: Sense LEDs on external device

M33P and Planeta9999,

Thank you both for the time you have taken to provide such comprehensive information. The similarity of the two solutions is not lost on me. I think I will try opto-isolator route. I'll report back once I have implemented it.
by gjs
Thu Jan 31, 2013 10:18 am
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: Sense LEDs on external device
Replies: 13
Views: 3112

Re: Sense LEDs on external device

That looks straightforward enough. Can you suggest what transistor type would be required?

Thanks.

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