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by greypower
Mon Dec 01, 2014 11:51 am
Forum: General discussion
Topic: For Info : serial to wifi board
Replies: 0
Views: 420

For Info : serial to wifi board

This board may come in useful for hardware hackers using the forum: Product: http://www.ebay.com/itm/ESP8266-Serial-WIFI-Wireless-Transceiver-Module-Send-Receive-LWIP-AP-STA-A/201205524305?_trksid=p2047675.c100010.m2109&_trkparms=aid%3D555012%26algo%3DPW.MBE%26ao%3D1%26asc%3D27890%26meid%3Dc22913d1c...
by greypower
Mon Jun 16, 2014 10:09 pm
Forum: Camera board
Topic: Raspberry Pi enclosed?
Replies: 4
Views: 1266

Raspberry Pi enclosed?

by greypower
Mon Dec 16, 2013 10:37 pm
Forum: Off topic discussion
Topic: A £11.99 Oscilloscope for the Beginner
Replies: 18
Views: 9204

Re: A £11.99 Oscilloscope for the Beginner

The software for this 'scope appears to work under Wine for Linux. See:
http://www.picaxeforum.co.uk/showthread ... post252164
by greypower
Sat Dec 14, 2013 12:07 pm
Forum: Off topic discussion
Topic: For ARM, MCU & Python lovers
Replies: 6
Views: 3884

Re: For ARM, MCU & Python lovers

Thanks DexOS - I had not seen this. Very interesting
by greypower
Fri Dec 13, 2013 11:53 am
Forum: Off topic discussion
Topic: For ARM, MCU & Python lovers
Replies: 6
Views: 3884

Re: For ARM, MCU & Python lovers

Still not too late to sign-up for a board ( or two) :http://micropython.org/
by greypower
Fri Dec 13, 2013 9:36 am
Forum: Off topic discussion
Topic: For ARM, MCU & Python lovers
Replies: 6
Views: 3884

Re: For ARM, MCU & Python lovers

You could do the very same on a raspberry pi. You could code it in python and it would run as fast as if it where written in assembly. I am talking without a OS. Indeed you could. Micro Python ported to RPi, so eliminating Rasbian from the scene, would, I fancy, run much faster than the ST chip use...
by greypower
Thu Dec 12, 2013 6:20 pm
Forum: Off topic discussion
Topic: For ARM, MCU & Python lovers
Replies: 6
Views: 3884

For ARM, MCU & Python lovers

I nearly missed this :

http://www.kickstarter.com/projects/214 ... ontrollers

We live in interesting times!
by greypower
Fri Dec 06, 2013 4:01 pm
Forum: Off topic discussion
Topic: A £11.99 Oscilloscope for the Beginner
Replies: 18
Views: 9204

Re: A £11.99 Oscilloscope for the Beginner

The designer actually apparently knows what he is doing (certainly, he knows more than me) and there doesn't seem to be a marketing department involved who don't know the difference between sample rate and bandwidth (unlike all those pocket ARM oscilloscopes on ebay). The picaxe site has some usefu...
by greypower
Fri Dec 06, 2013 12:07 pm
Forum: Off topic discussion
Topic: A £11.99 Oscilloscope for the Beginner
Replies: 18
Views: 9204

Re: A £11.99 Oscilloscope for the Beginner

joan wrote:A £0.00 oscilloscope for the beginner.

http://abyz.co.uk/rpi/pigpio/piscope.html
Again for the record the above is a "logic analyser" & not an oscilloscope (which measures analogue (voltage) signals)
by greypower
Fri Dec 06, 2013 11:30 am
Forum: Off topic discussion
Topic: A £11.99 Oscilloscope for the Beginner
Replies: 18
Views: 9204

Re: A £11.99 Oscilloscope for the Beginner

50Ksps... max realistic bandwidth: 5Khz Just for the record the above is a misinterpretation of the capabilities of this device. In dual channel scope mode it can sample up to 1 MEGA samples/sec per channel for repetitive signals ( and most signals encountered are). It will easily handle the audio ...
by greypower
Thu Dec 05, 2013 12:04 pm
Forum: Off topic discussion
Topic: A £11.99 Oscilloscope for the Beginner
Replies: 18
Views: 9204

Re: A £11.99 Oscilloscope for the Beginner

Great video!! Somehow I don't think anybody would be interested in making things work with W95 - but this 'scope would do for the speed-of-sound experiment.
by greypower
Thu Dec 05, 2013 10:42 am
Forum: Off topic discussion
Topic: A £11.99 Oscilloscope for the Beginner
Replies: 18
Views: 9204

A £11.99 Oscilloscope for the Beginner

Came across this scope: [url]http://www.picaxe.com/Hardware/Add-on-M ... cope//[url] - specification here.

It is very good value, however the software is Windows based. ( I have no relationship with the Picaxe company)
by greypower
Sun Nov 24, 2013 10:18 am
Forum: HATs and other add-ons
Topic: Gertduino & Relays
Replies: 3
Views: 1757

Re: Gertduino

There are many relay boards available from internet suppliers that the Gertduino can drive e.g. http://www.futurlec.com/InterfaceBoards.shtml
by greypower
Thu Aug 29, 2013 9:17 am
Forum: Wanted
Topic: Cheap portable power supply
Replies: 4
Views: 4315

Re: Cheap portable power supply

ebay is full battery devices like this:
http://www.ebay.co.uk/itm/5000-mAh-Exte ... 4ac81bda03
by greypower
Sun Aug 25, 2013 8:20 am
Forum: General discussion
Topic: SOLVED: Angle calculations between different dimensions
Replies: 11
Views: 3497

Re: Angle calculations between different dimensions

This may be of use http://www.analog.com/static/imported-f ... N-1057.pdf

I can't imagine you anything further

Cheers
by greypower
Mon Jul 29, 2013 10:22 am
Forum: General discussion
Topic: Google Chrome Cast vs Raspberry Pi -- Video Stream.
Replies: 25
Views: 75968

Re: Google Chrome Cast vs Raspberry Pi -- Video Stream.

Having worked in the hangar Google rents to keep its 757, 767, and executives' private aircraft, and seen what goes on and comes off those aircraft in the dark of night, I can tell you a lot of their money isn't going for Mom, apple pie, or whatever the equivalent may be in your value system .... T...
by greypower
Sun Jun 02, 2013 7:58 am
Forum: General programming discussion
Topic: Mapping my GPS data
Replies: 8
Views: 7517

Re: Mapping my GPS data

Look into using Google Earth for displaying your GPS data. From memory, you can convert the raw GPS output to a specific mark-up language called "KML" and use this to plot paths on Google Earth. There are example bits of Python on the web for you to use either on the Pi or a PC for this conversion.
by greypower
Wed Jan 09, 2013 2:42 pm
Forum: Off topic discussion
Topic: Computing History - EDSAC
Replies: 0
Views: 400

Computing History - EDSAC

This may be of interest to some : http://www.bbc.co.uk/news/technology-20949562
by greypower
Fri Nov 30, 2012 6:46 am
Forum: Automation, sensing and robotics
Topic: connect pyranometer to Rpi
Replies: 16
Views: 4392

Re: connect pyranometer to Rpi

Basics first - what is the interface of the device to the "outside world" i.e. how does the device communicate - what is the specification of this, electrically & logically?
by greypower
Tue Nov 20, 2012 3:17 pm
Forum: Off topic discussion
Topic: Digital Computer History
Replies: 1
Views: 633

Digital Computer History

This may be of interest to some of the Pi community : http://www.tnmoc.org/news/news-releases/worlds-oldest-original-working-digital-computer There is a good video on the BBC site here : http://www.bbc.co.uk/news/technology-20395212 Whilst on the subject of "history", this site : http://www.roylongb...
by greypower
Tue Oct 23, 2012 3:01 pm
Forum: C/C++
Topic: include <time.h> but CLK_TCK undeclared
Replies: 2
Views: 7548

Re: include <time.h> but CLK_TCK undeclared

thanks panik - I'm just past my sell-by date!!
by greypower
Tue Oct 23, 2012 2:35 pm
Forum: C/C++
Topic: include <time.h> but CLK_TCK undeclared
Replies: 2
Views: 7548

include <time.h> but CLK_TCK undeclared

noob confuion here: Compiling this code in Geany fails wih "time-loop.c:13:50: error: CLK_TCK undeclared (first use in this function)" #include <time.h> #include <stdio.h> int main(void) { clock_t start, stop; unsigned long t; start = clock(); for(t=0; t<500000L; t++); stop = clock(); printf ("Loop ...
by greypower
Wed Oct 10, 2012 10:23 am
Forum: Off topic discussion
Topic: The LED @ 50
Replies: 2
Views: 644

The LED @ 50

Happy birthday LED! You may find this illuminating (sorry!) :

http://www.bbc.co.uk/news/technology-19886534
by greypower
Thu Sep 13, 2012 3:46 pm
Forum: C/C++
Topic: Bash:...Cannot Execute Binary - gcc compiled on RPi
Replies: 2
Views: 3146

Re: Bash:...Cannot Execute Binary - gcc compiled on RPi

That was quick!! Many thanks Peter,

must do more reading, must do more reading, must do more reading ...etc ...etc ;)

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