Go to advanced search

by Justwondering321
Wed Aug 22, 2012 4:38 pm
Forum: Python
Topic: Motors and transistors...
Replies: 30
Views: 5125

Re: Motors and transistors...

Jesus! Didn't realise how pathetically SLOW those motors were gonna be! Does anybody know of a good set that I could buy online fairly inexpensively? That robot chassis is starting to look good value and a lot easier than a do it yourself job! Sorry for this noob question but, when you say a geared ...
by Justwondering321
Fri Aug 17, 2012 4:47 pm
Forum: Python
Topic: Motors and transistors...
Replies: 30
Views: 5125

Re: Motors and transistors...

So I have found a motor driver... This one: http://item.mobileweb.ebay.co.uk/viewitem?itemId=140823077598&index=3&nav=SEARCH&nid=44146298898 And I am debating on buying it or not. To be honest all those pins on it are confusin' me! Do you have any example code? Thanks guys I really appreciate the he...
by Justwondering321
Mon Aug 06, 2012 11:45 am
Forum: Python
Topic: Email notifier/ CPU usage LEDs
Replies: 5
Views: 1533

Re: Email notifier/ CPU usage LEDs

Thanks
by Justwondering321
Mon Aug 06, 2012 8:00 am
Forum: Python
Topic: Email notifier/ CPU usage LEDs
Replies: 5
Views: 1533

Email notifier/ CPU usage LEDs

Hey guys,

How would I go about programming an LED to flash when a new email arrives? Or have 3 status LEDs that would each turn on depending on CPU usage? No idea how to get a program to search for things 'internally'! :) :) :)

Thanks
by Justwondering321
Sun Aug 05, 2012 5:12 pm
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: Potentiometer and LED problems.
Replies: 33
Views: 5112

Re: Potentiometer and LED problems.

Okay thanks... I understood most of what you said apart from this bit: then you follow it by the value you want in the control register. Look at the data sheet for the device at the picture of the control register. You will see bits that need setting to zero or one in order it to put it into the mod...
by Justwondering321
Sun Aug 05, 2012 4:36 pm
Forum: For sale
Topic: New Pi Case!
Replies: 15
Views: 5468

Re: New Pi Case!

I would like to see it in a little more detail and to know that my card details are safe extra... May I suggest you start selling on eBay or Amazon rather than through email... Sad to say that you lost a customer there :( :( :(
by Justwondering321
Sun Aug 05, 2012 4:19 pm
Forum: For sale
Topic: New Pi Case!
Replies: 15
Views: 5468

Re: New Pi Case!

Is there FULL access to the GPIO pins? If so count me in!
by Justwondering321
Sun Aug 05, 2012 4:10 pm
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: Potentiometer and LED problems.
Replies: 33
Views: 5112

Re: Potentiometer and LED problems.

Not very good with that quote thing am I?!!!
by Justwondering321
Sun Aug 05, 2012 4:08 pm
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: Potentiometer and LED problems.
Replies: 33
Views: 5112

Re: Potentiometer and LED problems.

[/quote]Not specifically but you don't need one. You simply send the address byte and control register bit pattern and then read the value back from the device.[/quote] OK... As you might of gathered I am a total noob with some experience in electronics. So I have no idea what you mean by address by...
by Justwondering321
Sun Aug 05, 2012 3:39 pm
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: Potentiometer and LED problems.
Replies: 33
Views: 5112

Re: Potentiometer and LED problems.

So in terms of code (Python preferably) how would things map out?Is there even an command in the python RPI GPIO libary for analogue inputs/outputs? Or am I gonna have to go back to good old C++? Thanks :D
by Justwondering321
Sun Aug 05, 2012 3:14 pm
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: Potentiometer and LED problems.
Replies: 33
Views: 5112

Re: Potentiometer and LED problems.

Sorry for being impatient!

On last thing: Is this suitable???

http://www.ebay.co.uk/itm/PCF8591P-PCF8 ... 1319wt_799

Thanks and I apologise again! :D :D :D
by Justwondering321
Sun Aug 05, 2012 7:24 am
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: Potentiometer and LED problems.
Replies: 33
Views: 5112

Re: Potentiometer and LED problems.

Ah, scroll is the wrong word, that is what threw me. You can do this with a chip and don't need a computer at all. Look at the LM3914, LM3915, and LM3916. However, if you want to use the Pi then you need an A/D converter. The simplest way would be to wire itup to the I2C port. Look at the PCF8591, ...
by Justwondering321
Sat Aug 04, 2012 8:51 pm
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: Potentiometer and LED problems.
Replies: 33
Views: 5112

Re: Potentiometer and LED problems.

Okay 12 LEDs, one pot. When you scroll the pot to the right the LEDs light up to the right and vice versa for the left... A/D converter is that hardware or software and are they expensive???
by Justwondering321
Sat Aug 04, 2012 8:18 pm
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: Potentiometer and LED problems.
Replies: 33
Views: 5112

Potentiometer and LED problems.

I have got some potentiometers and some LEDs and would like to make a system that lets me scroll through a bank of LEDs. How would I do this in Python and what library would I need to download??? Using R pi one at the moment but have heard of others. Also how would I monitor an temperature sensor or...
by Justwondering321
Sat Aug 04, 2012 8:10 pm
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: PWM/ Shift registers
Replies: 7
Views: 2665

Re: PWM/ Shift registers

Sorry for repeating another person. :oops: could you post a link to it? Thanks
by Justwondering321
Sat Aug 04, 2012 8:05 pm
Forum: General discussion
Topic: 7 port powered USB hub (d-link)
Replies: 7
Views: 3233

Re: 7 port powered USB hub (d-link)

Similar thing happened with me... I had a logik 7 port powered USB hub and when I plug it in everything appeared fine. Then I tried the Internet and for some bizarre reason it wasn't working. Unplugged hub and it's fine again. Any way to fix it???
by Justwondering321
Sat Aug 04, 2012 5:24 pm
Forum: Python
Topic: Analogue outputs...
Replies: 7
Views: 2373

Re: Analogue outputs...

:)
by Justwondering321
Sat Aug 04, 2012 4:26 pm
Forum: Off topic discussion
Topic: 5v help???
Replies: 15
Views: 2507

Re: 5v help???

Sure here it is:
Typical 390 pin Breadboard
by Justwondering321
Sat Aug 04, 2012 3:56 pm
Forum: Python
Topic: Analogue outputs...
Replies: 7
Views: 2373

Re: Analogue outputs...

So how would you wire up a 7 segment display to the I2C bus (Which pin is it and also what actually is an I2C bus in idiot terms if possible!)? And what code would one require? Thanks
by Justwondering321
Sat Aug 04, 2012 3:39 pm
Forum: Other projects
Topic: The MagPi Magazine www.themagpi.com
Replies: 253
Views: 53180

Re: The MagPi Magazine www.themagpi.com

Great Magazine. I love reading it on my kindle. One thing I would like to see in your 'In control' section is something about PWM and analogue components like potentiometers. Just because this is where I get stuck in Python! Other than that GREAT work... Keep it up!
by Justwondering321
Sat Aug 04, 2012 3:30 pm
Forum: Python
Topic: Analogue outputs...
Replies: 7
Views: 2373

Analogue outputs...

Because of the Pi's lack of Analogue pins I realize that if I want to use a servo for example (Or any Analogue input/output) I will have to use PWM... I have no idea how I would use this in python. Could someone please help me? Also how would you use something like a LCD display or a 7 segment displ...
by Justwondering321
Sat Aug 04, 2012 3:23 pm
Forum: Off topic discussion
Topic: 5v help???
Replies: 15
Views: 2507

Re: 5v help???

Also would the Python code be any different? :)
by Justwondering321
Sat Aug 04, 2012 3:13 pm
Forum: Off topic discussion
Topic: 5v help???
Replies: 15
Views: 2507

Re: 5v help???

Sorry for not being specific... In terms of a simple circuit how would an led (flashing or just on) look like wired up??? :oops: Thanks for your continuing help in my noob questions!

Go to advanced search