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by annodomini2
Tue Aug 14, 2012 11:14 am
Forum: Automation, sensing and robotics
Topic: Robot transistor problems...
Replies: 3
Views: 1112

Re: Robot transistor problems...

I'd look at a motor controller, many of the hobby/education electronics suppliers sell them.

With 4 motors you'll probably need 2-4 depending on the type of motor controller.
by annodomini2
Tue Jul 24, 2012 1:15 pm
Forum: Other projects
Topic: my RPi media-center case by ikea
Replies: 3
Views: 2205

Re: my RPi media-center case by ikea

Quite like that, do you intend to put a display behind the black glass?
by annodomini2
Thu Jul 05, 2012 3:37 pm
Forum: Automation, sensing and robotics
Topic: Dealing with high voltage
Replies: 6
Views: 2867

Re: Dealing with high voltage

The main issues you will face are Electro-magnetic Compatibility (EMC) and Temperature. Typical Automotive cabin temp requirements are -40degC -> +85degC, the Pi is not designed for this and getting a display panel that works at these temps will be very difficult. Next is EMC or interference, lots o...
by annodomini2
Wed Jun 27, 2012 9:44 am
Forum: Automation, sensing and robotics
Topic: Stepper Motor Project
Replies: 15
Views: 9359

Re: Stepper Motor Project

The BitWizard board has PWM implemented, so you can control the drive intensity. It can drive one stepper, or two regular motors, but not two steppers (unless they both need to do the same, then they can be connected in parallel). Anyway, for some uses it's an ideal board, and for some, just to fan...
by annodomini2
Wed Jun 27, 2012 9:06 am
Forum: General discussion
Topic: Make it EASY for noobs
Replies: 36
Views: 6190

Re: Make it EASY for noobs

Oh an can we change the font colour for hyperlinks while you're at it?
by annodomini2
Wed Jun 27, 2012 9:05 am
Forum: General discussion
Topic: Make it EASY for noobs
Replies: 36
Views: 6190

Re: Make it EASY for noobs

One problem I've seen quite frequently on this forum is a flood of low-quality answers which obscure the high-quality answers. Sometimes when a newbie asks a question with a fairly simple answer, there tend to be several irrelevant answers or investigative counter questions from users who try to be...
by annodomini2
Tue Jun 26, 2012 10:36 am
Forum: Automation, sensing and robotics
Topic: Garage Door opener via phone dial?
Replies: 38
Views: 16366

Re: Garage Door opener via phone dial?

Bluetooth!

You can have multistage security, you could even assign one use codes.

Most phones have it.

A pairing code is needed, then an open door code.
by annodomini2
Tue Jun 26, 2012 10:11 am
Forum: General discussion
Topic: Make it EASY for noobs
Replies: 36
Views: 6190

Re: Make it EASY for noobs

One problem I've seen quite frequently on this forum is a flood of low-quality answers which obscure the high-quality answers. Sometimes when a newbie asks a question with a fairly simple answer, there tend to be several irrelevant answers or investigative counter questions from users who try to be...
by annodomini2
Fri Jun 22, 2012 11:13 am
Forum: Automation, sensing and robotics
Topic: Stepper Motor Project
Replies: 15
Views: 9359

Re: Stepper Motor Project

Yep with you on this one Cliff. Hopefully I should have my Raspberry Pi by August and should be easy enough to knock up a opto isolated circuit for the I/O lines and run some stepper drivers. Easy enough to do with Pic Chips and Atmels's to run CNC machines and 3D printers. Of course these are stil...
by annodomini2
Wed Jun 20, 2012 2:49 pm
Forum: General discussion
Topic: Wireless keyboard
Replies: 34
Views: 9583

Re: Wireless keyboard

I use one of these:

http://www.amazon.co.uk/gp/product/B004 ... 03_s00_i00

Works mostly fine, trackball can be a little temperamental at times.
by annodomini2
Wed Jun 20, 2012 2:46 pm
Forum: General discussion
Topic: Hardware Watchdog
Replies: 16
Views: 3061

Re: Hardware Watchdog

Agree! ;)
by annodomini2
Wed Jun 20, 2012 9:36 am
Forum: General discussion
Topic: Hardware Watchdog
Replies: 16
Views: 3061

Re: Hardware Watchdog

Yes hardware is pretty hard to get right, but that is why we have a highly experienced team building the chips. Before we ship, we abuse our chips very, very much. In fact I am directly involved in the quality control of this one and we have not yet managed to get any of these chips to latch-up. WD...
by annodomini2
Wed Jun 20, 2012 8:39 am
Forum: General discussion
Topic: RaspberryPi On/Off Switch Idea
Replies: 81
Views: 53786

Re: RaspberryPi On/Off Switch Idea

http://www.mobilefun.co.uk/mini-usb-to- ... 2Bproducts

Not cheap, but something like this.
by annodomini2
Thu Jun 14, 2012 10:59 am
Forum: Other projects
Topic: The PlyPi
Replies: 48
Views: 17327

Re: The PlyPi

Great job! :)
by annodomini2
Wed Jun 13, 2012 1:17 pm
Forum: Python
Topic: python learning sites
Replies: 7
Views: 3849

Re: python learning sites

Probably good to put this thread or a copy as a sticky at the top of the forum, likely to be a frequently asked question.
by annodomini2
Wed Jun 13, 2012 12:46 pm
Forum: General discussion
Topic: A plea to the Foundation re. MPEG-2
Replies: 153
Views: 43713

Re: A plea to the Foundation re. MPEG-2

boarsblood said: Yep, that's the issue. It seems to me that the board's stateless state (well, apart from the MAC, which can be spoofed) and unlicensed OS makes it nigh on impossible to tie an after market add-on license to the person who paid for it. That's why MPEGLA normally require licensing fo...
by annodomini2
Thu May 31, 2012 10:09 am
Forum: Automation, sensing and robotics
Topic: Raspberry Pi and 3D Printers
Replies: 13
Views: 14677

Re: Raspberry Pi and 3D Printers

for RepRap it would be more beneficial to add the networking interface to the RepRap electronics than using the Pi as the interface. That's exactly what adding a Pi to an existing Arduino-driven RepRap printer achieves. The Pi does the nextworking while the Arduino does the realtime control. The ke...
by annodomini2
Wed May 30, 2012 9:07 am
Forum: For sale
Topic: Case Designs
Replies: 7
Views: 5648

Re: Case Designs

The case design forum is further up, this is the cases for sale forum.
by annodomini2
Wed May 30, 2012 9:06 am
Forum: For sale
Topic: Solarbotics to sell Acrylic Raspberry Pi enclosure
Replies: 38
Views: 16646

Re: Solarbotics to sell Acrylic Raspberry Pi enclosure

Would suggest replacing the Button head screws with countersunk units and machine the housing, so they sit flush with the top.
by annodomini2
Wed May 30, 2012 9:01 am
Forum: Other projects
Topic: "official" case compatibility
Replies: 7
Views: 3170

Re: "official" case compatibility

tech_monkey wrote:Why not use some blobs of Blu-tac or similar to secure it to the desk.
Duct tape is also useful in this regard.

Or foam sticky pads.
by annodomini2
Wed May 30, 2012 8:55 am
Forum: Automation, sensing and robotics
Topic: Raspberry Pi and 3D Printers
Replies: 13
Views: 14677

Re: Raspberry Pi and 3D Printers

I appreciate your desire to promote the Pi into multiple areas, for RepRap it would be more beneficial to add the networking interface to the RepRap electronics than using the Pi as the interface. The slicing operation can be done offline and the GCode supplied to the printer as a file. Most of the ...
by annodomini2
Wed May 30, 2012 8:43 am
Forum: General programming discussion
Topic: Someone with no experience whatsoever
Replies: 19
Views: 6888

Re: Someone with no experience whatsoever

You have 3 basic targets: 1. Desktop. 2. Embedded. 3. Web. The benefit of the Pi is it's a mix of all 3. The bulk of the operating system distributions are written in C/C++. The primary language setup for education on the Pi is Python. The web uses many different technologies and breaks down into 2 ...
by annodomini2
Wed May 30, 2012 8:36 am
Forum: General programming discussion
Topic: Someone with no experience whatsoever
Replies: 19
Views: 6888

Re: Someone with no experience whatsoever

daviewales wrote: I have no idea what Microsoft phones run...
.Net Compact framework, so:

C#
C++
VB.Net

Unsure if F# or any of the other quirky stuff is supported.
by annodomini2
Tue May 29, 2012 8:57 am
Forum: C/C++
Topic: A couple of queries...
Replies: 9
Views: 4379

Re: A couple of queries...

If you look at SSD performance, most will be advertised with peak sequential transfer speeds. Same with SD cards. However the critical element for most users is the IOPs and 4k random read/writes. For this, SD cards are very very poor, they are designed for basic data storage, the flash used in them...

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