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by rwclough
Tue Feb 12, 2019 9:15 pm
Forum: The MagPi
Topic: Proposal for a small robot controller based on RPi Zero
Replies: 8
Views: 1179

Re: Proposal for a small robot controller based on RPi Zero

Reply to mikronauts,
I’m not in the business of selling PCBs. I’m interested in writing an article for MagPi magazine about building a small robot.
Cheers,
Ron
by rwclough
Tue Feb 12, 2019 9:12 pm
Forum: The MagPi
Topic: Proposal for a small robot controller based on RPi Zero
Replies: 8
Views: 1179

Re: Proposal for a small robot controller based on RPi Zero

Reply to mattmiller,
I have seen hats that provide a single function. For example, multiple USB ports, multiple servo controllers, DACs, ADCs, graphic displays. My contribution provides all the functions, on one hat, to control a small wheeled robot.
Cheers,
Ron
by rwclough
Tue Feb 12, 2019 7:34 pm
Forum: The MagPi
Topic: Proposal for a small robot controller based on RPi Zero
Replies: 8
Views: 1179

Proposal for a small robot controller based on RPi Zero

The controller is a shield that plugs into a Raspberry Pi Zero. Its purpose is to control a small wheeled robot. The shield provides the following features: - 3 headers for I2C devices such as a SRF08 ultrasound rangefinder, - 3 channels of ADC for devices such a Sharp IR rangefinder, - 2 headers fo...
by rwclough
Sun Feb 02, 2014 3:59 pm
Forum: Advanced users
Topic: GPU_FFT
Replies: 1
Views: 527

GPU_FFT

I am interested in learning how to use the FFT functionality provided by the GPU_FFT library.
Is there a tutorial available, or example Python code using the library?

Thanks,
Ron
by rwclough
Thu Jun 06, 2013 7:20 pm
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: Disable I2C
Replies: 10
Views: 6717

Re: Disable I2C

In my program I set the pin naming scheme with GPIO.setmode(GPIO.BCM)
In this scheme are the I2C pins GPIO 0 and GPIO 1?
by rwclough
Thu Jun 06, 2013 5:55 pm
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: Disable I2C
Replies: 10
Views: 6717

Re: Disable I2C

I found the following: I disabled I2C as described above. I wrote a python program to alternate GPIO 0 and GPIO 1 between high and low as a simple test. When I tried to run it, RPIO complained as follows: RPIO.Exceptions.InvalidChannelException: The channel sent is invalid on a Raspberry Pi (not val...
by rwclough
Thu Jun 06, 2013 4:41 pm
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: Disable I2C
Replies: 10
Views: 6717

Re: Disable I2C

Thank you joan, FTrevorGowen, notro and gordon.
Your replies have been enlightening.
by rwclough
Wed Jun 05, 2013 10:59 pm
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: Disable I2C
Replies: 10
Views: 6717

Disable I2C

I want to disable I2C on my Raspberry Pi so that I can use the SCL and SDA pins (GPIO0 and GPIO1 pins) as general purpose IO pins.
If I edit /etc/modprobe.d/raspi-blacklist.conf and remove the # from in front of i2c-bcm2708 , will this disable I2C so I can use its pins as GPIO's ?
by rwclough
Mon Apr 01, 2013 2:38 pm
Forum: Beginners
Topic: In what directory is installed program stored?
Replies: 5
Views: 21656

Re: In what directory is installed program stored?

Thank you Trev. Two other useful commands are: apropos "foobar" which will list programs, libraries etc. with the string "foobar" in their name, short help or similar - can help you find a potentially useful app. you didn't know you had. :) (NB: don't type in the quotation marks - I'm using them her...
by rwclough
Mon Apr 01, 2013 2:36 pm
Forum: Beginners
Topic: In what directory is installed program stored?
Replies: 5
Views: 21656

Re: In what directory is installed program stored?

Thank you rpdom. The command "dpkg -L <package name>" (note the upper case "L") will give you a list of files that were installed on your system with "apt-get install <package name>". Please note this dpkg option doesn't require root privileges, as it is only listing details, not updating anything, ...
by rwclough
Mon Apr 01, 2013 2:56 am
Forum: Beginners
Topic: In what directory is installed program stored?
Replies: 5
Views: 21656

In what directory is installed program stored?

When I do this "sudo apt-get install <program name>"
how can I find where the program got stored?

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