Go to advanced search

by bobc
Mon Sep 03, 2012 7:37 pm
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: More PWM pins....
Replies: 9
Views: 4098

Re: More PWM pins....

I have a similar problem to Bigcat.... That device looks unnecessarily expensive. Does anybody know a cheaper one? In the region of £5-£10... Somebody must have seen something! :) Well, now that people are using the Pi as an Arduino replacement, you may as well use Arduino shields as well. Generall...
by bobc
Tue Aug 28, 2012 6:58 pm
Forum: Media centres
Topic: looking for volunteer programmer.
Replies: 98
Views: 12290

Re: looking for volunteer programmer.

Being able to compile things from source is one of the best things about Linux: having to install software by compiling from the source is one of the worst things about Linux!

Patience and effort is required from both students and teachers...
by bobc
Sun Aug 26, 2012 12:31 pm
Forum: Automation, sensing and robotics
Topic: Driving multiple servos from the RaspberryPi
Replies: 209
Views: 85283

Re: Driving multiple servos from the RaspberryPi

Not being a hardware orientated person I've got a question: What would be required to drive multiple RGB LED strips using the same PWM techniques? Would this be possible? You would need MOSFET Drivers which can take a 3.3V logic input, perhaps something like this http://www.ebay.co.uk/itm/Arduino-F...
by bobc
Sun Aug 26, 2012 12:25 pm
Forum: Gertboard classic
Topic: Is Gertboard opensource?
Replies: 14
Views: 3436

Re: Is Gertboard opensource?

Gerboard uses a selection of common components placed together on a PCB for prototyping and experimenting so there is no unique patented design or anything that would prevent you from using the same components on your own design of board. In fact if you wanted there would be nothing to stop you fro...
by bobc
Wed Aug 22, 2012 11:09 pm
Forum: Automation, sensing and robotics
Topic: Driving multiple servos from the RaspberryPi
Replies: 209
Views: 85283

Re: Driving multiple servos from the RaspberryPi

Hi, I've written a kernel driver for the Pi which lets you drive multiple servos, without having to resort to additional hardware such as micro-controllers. It seems to work very nicely, giving nice stable outputs even when the Pi is busy with other tasks; here's a screenshot of Panalyzer showing f...
by bobc
Sun Aug 05, 2012 6:28 pm
Forum: Off topic discussion
Topic: Another potential development board
Replies: 25
Views: 5587

Re: Another potential development board

Olimex have an Allwinner A13 nearing production, and I think they are also looking at an A10 board. Raspberry Pi seems to have opened up the market for low cost Linux boards. I'm not sure that all these boards will get as good software support though, that is really the key, unless you are at home b...
by bobc
Sun Aug 05, 2012 6:03 pm
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: RS-485
Replies: 10
Views: 8792

Re: RS-485

Hello all, After a brief test I can't get the RTS and CTS signals going. I used minicom and set flow controll to hardware. I could not see any activity on the RTS pins with my oscilloscope. RTS/CTS is not going to do what you want anyway. Some UART implementations have a function for RS485 operatio...
by bobc
Wed Aug 01, 2012 7:41 am
Forum: General discussion
Topic: I didn't get my board the parcelforce do not answer
Replies: 16
Views: 2390

Re: I didn't get my board the parcelforce do not answer

I'm very sorry about your shipping experience, but as Scep said above, the Raspberry Pi Foundation (we're the folks who are running this forum) have NOTHING to do with your order. We design the hardware and run the community - the people you bought it from both manufacture and despatch that hardwar...
by bobc
Tue Jul 31, 2012 11:44 pm
Forum: General programming discussion
Topic: Best first language choice
Replies: 140
Views: 23519

Re: Best first language choice

It really doesn't matter much, but the "best" is whichever one you feel comfortable with. If you enjoy it you will probably go on to learn dozens of languages. If you find it sucks, you are probably not going to be into programming. To be honest, most languages in common use are procedural and share...
by bobc
Tue Jul 31, 2012 11:30 pm
Forum: General discussion
Topic: I didn't get my board the parcelforce do not answer
Replies: 16
Views: 2390

Re: I didn't get my board the parcelforce do not answer

Sadly, this is the worst thing about online shopping. Couriers barely know what to do with retail consumers. You then enter the twilight zone....The supplier don't care, they have got your money and delivery is "not their problem". The courier don't care, they got their money and you are not their c...
by bobc
Tue Jul 31, 2012 10:05 pm
Forum: General discussion
Topic: in stock for next working day delivery
Replies: 6
Views: 1280

Re: in stock for next working day delivery

Farnell can't seem to make up their mind, one page says 3 weeks, the next 5 weeks. After a recent bad experience with Farnell, I wouldn't order from them, but their lead time seems to be far better than the 17 weeks quoted by RS.
by bobc
Mon Jul 30, 2012 12:44 pm
Forum: Other projects
Topic: Watercooled Raspberry PI
Replies: 37
Views: 9722

Re: Watercooled Raspberry PI

So the saying, "where there are trollish comments, there is a troll".

The R.Pi does not need watercooling, but feverish brains might ;)
by bobc
Tue Jul 24, 2012 5:05 pm
Forum: Bare metal
Topic: Programming in Basic on Bare Metal Tutorial 1
Replies: 51
Views: 12092

Re: Programming in Basic on Bare Metal Tutorial 1

For what it's worth, I think that using macro assembler as a starting point for bare metal programming is a real good idea, and i'm puzzled about the negative attitude it seems to get from people who seem to be only familiar with more traditional ways of creating code. It can have all the power of ...
by bobc
Mon Jul 23, 2012 10:54 pm
Forum: Bare metal
Topic: Programming in Basic on Bare Metal Tutorial 1
Replies: 51
Views: 12092

Re: Programming in Basic on Bare Metal Tutorial 1

Well, I suppose macro assembly is a small step forward from regular assembly. If assembly is "the easiest programming language to understand" is DexBasic more easiest, or actually slightly harder?? :? Logically, if history is a guide, in a few months you will have invented DexC, a yet even more easi...
by bobc
Sun Jul 22, 2012 4:33 pm
Forum: Arch
Topic: arch = terminal only?
Replies: 30
Views: 43466

Re: arch = terminal only?

#Install LXDE: pacman -S openbox lxde gamin dbus #Lxde and needed dependancies pacman -S xorg-server xorg-xinit xorg-server-utils #Xorg pacman -S mesa xf86-video-fbdev xf86-video-vesa #Video Drivers #To use startx, you will need to define LXDE in your ~/.xinitrc file: echo “exec ck-launch-session s...
by bobc
Sun Jul 22, 2012 2:26 pm
Forum: Beginners
Topic: Seriously .. where to find power supply?
Replies: 76
Views: 20015

Re: Seriously .. where to find power supply?

I think we are talking at cross-purposes here. Yes micro USB is an official USB standard, and there is an EU policy mandating the use of micro USB for charging smartphones. However, paper standards and implementation are different things. In the EU smartphones are shipping with micro USB, but there...
by bobc
Sun Jul 22, 2012 10:16 am
Forum: Beginners
Topic: Seriously .. where to find power supply?
Replies: 76
Views: 20015

Re: Seriously .. where to find power supply?

I think we are talking at cross-purposes here. Yes micro USB is an official USB standard, and there is an EU policy mandating the use of micro USB for charging smartphones. However, paper standards and implementation are different things. In the EU smartphones are shipping with micro USB, but there ...
by bobc
Sat Jul 21, 2012 11:00 pm
Forum: General discussion
Topic: Real-time linux kernel
Replies: 47
Views: 48610

Re: Real-time linux kernel

Well , it seems that a fellow made it work on and ARM processor : http://www.youtube.com/watch?v=YSnNtgZrfyU If could have the knowledge I would try it myself. His board it's running at 400mhz. The key there appears to be miniemc2 http://code.google.com/p/miniemc2/ . You just need to port the sourc...
by bobc
Tue Jul 10, 2012 6:32 pm
Forum: For sale
Topic: Relay card for GPIO
Replies: 12
Views: 12124

Re: Relay card for GPIO

I wish someone would sell a relay board inside a box with IEC outlet all wired up safely to CE standard. I don't mind dabbling with electronics I don't really understand, but dabbling with power electronics is something I have never been comfortable with since that accident with the mains transforme...
by bobc
Tue Jul 10, 2012 3:20 pm
Forum: Other projects
Topic: Congimem CM1K - Neural Network Chip
Replies: 10
Views: 4788

Re: Congimem CM1K - Neural Network Chip

Ah, that's more affordable. Could be some really interesting applications. I would like something to work out those obscure CAPTCHAs for me.

Anyone seen the Human Brain Project? Here comes the Singularity!
by bobc
Tue Jul 10, 2012 3:12 pm
Forum: General discussion
Topic: VIA announces APC 8750 Raspberry Pi competitor
Replies: 8
Views: 1773

Re: VIA announces APC 8750 Raspberry Pi competitor

Hmm, my "High Street" has 3 chinese takeaways, 2 fish'n'chip shops, 2 nail bars/salons, a fish therapist (?), a florist, 2 charity shops, newsagent and a post office, and thats about it. I never shop there, but I have plenty of time to study it while waiting at the level crossing, the busiest crossi...
by bobc
Tue Jul 10, 2012 1:45 pm
Forum: General discussion
Topic: VIA announces APC 8750 Raspberry Pi competitor
Replies: 8
Views: 1773

Re: VIA announces APC 8750 Raspberry Pi competitor

LuaPie wrote:This is all very interesting, but you can't actually buy these devices anywhere on the high street. I looked in Maplin and PC World and they had none.
Are you talking about R.Pi or something else?
by bobc
Tue Jul 10, 2012 12:57 pm
Forum: Bare metal
Topic: [BareMetal] USB
Replies: 31
Views: 8502

Re: [BareMetal] USB

Cycl0ne wrote:Hi,
thanks for all your help, my USB Stack is now working :)
Nice job! Once you get your brain around the concepts, USB can be made quite simple.
by bobc
Tue Jul 10, 2012 11:37 am
Forum: Other projects
Topic: Congimem CM1K - Neural Network Chip
Replies: 10
Views: 4788

Re: Congimem CM1K - Neural Network Chip

From the presser CogniMem™ Launches CogniBlox™ The CogniBlox system is composed of four CM1K chips or a total of 4096 cognitive memory processing elements per board in a trainable 3-layer network, each having 256 programmable 1-byte connections to the input. Systems of 1 million elements can be conf...
by bobc
Tue Jul 10, 2012 11:18 am
Forum: General discussion
Topic: VIA announces APC 8750 Raspberry Pi competitor
Replies: 8
Views: 1773

Re: VIA announces APC 8750 Raspberry Pi competitor

It seems that every device containing an ARM is now a "Raspberry Pi competitor". :lol:

These are just lazy web journalists using the buzz around R.Pi to get more page hits. I don't think I have seen anything that really is in the same category as R.Pi.

Go to advanced search