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by beautifulsmall
Wed Jul 10, 2013 11:16 pm
Forum: Other projects
Topic: rpeye camera eye 2cm^3
Replies: 2
Views: 490

rpeye camera eye 2cm^3

with the DDR on chip, the Pi chip could attatch an underside camera with a 2nd pcb over the pi chip with connectors, all within the size of a real human eyeball.
by beautifulsmall
Sun Nov 18, 2012 9:01 pm
Forum: General programming discussion
Topic: Autorun Python
Replies: 7
Views: 5269

Re: Autorun Python

The code runs in a continuous loop bursting 8 bytes every second. Ctrl C displays C^ but has no effect. I can use a linux machine tomorrow to edit the file on the SD card so all is not lost and I will add your suggested code. Many thanks.
by beautifulsmall
Sat Nov 17, 2012 9:10 pm
Forum: General programming discussion
Topic: Autorun Python
Replies: 7
Views: 5269

Re: Autorun Python

rc.local , was the file which runs a.out , the uart sends the data so I know a.out is running but I don't get a prompt and cant get "back in" . any help appreciated.
by beautifulsmall
Sat Nov 17, 2012 6:44 pm
Forum: General programming discussion
Topic: Autorun Python
Replies: 7
Views: 5269

Re: Autorun Python

How do I stop Autorun. Hope this is relevant to the topic , I have a C programme a.out to send data out of the uart and i autologon and autorun the programme by an added line /root/Desktop/a.out in /etc/local.rc It runs ok from power on but how can I stop it . The only thing that works is Ctrl-alt-d...
by beautifulsmall
Thu Sep 20, 2012 10:16 pm
Forum: Advanced users
Topic: Remote desktop via network
Replies: 14
Views: 27713

Re: Remote desktop via network

got the Pi gui on my galaxy note screen! I have just followed the linux newsletter article for N900 (see below remote login with my Samsung Galaxy note. it looks good, phone connect as wi-fi-hotspot teathered usb. Android terminal on phone , ssh [email protected].168.42.154 gets connection . I had to set all 3...
by beautifulsmall
Thu Aug 02, 2012 11:46 pm
Forum: Advanced users
Topic: Overclocking
Replies: 1125
Views: 579484

Re: Overclocking

Looks like Hynix and Samsung have been used so far . I would have you now issuing xlophones if you want to go faster.
by beautifulsmall
Thu Aug 02, 2012 11:37 pm
Forum: Advanced users
Topic: Overclocking
Replies: 1125
Views: 579484

Re: Overclocking

ive looked right through this forum and cant find any mention of exactly what DDR is fitted to the pi. Does anyone know the manufacturer and speed grade is fitted. Often manufacturers like BCM will dual source so some could be hynix, others elpida ? Also there are many other settings related to memo...
by beautifulsmall
Thu Aug 02, 2012 10:47 pm
Forum: Camera board
Topic: Camera module! (And a picture of JamesH)
Replies: 431
Views: 147728

Re: Camera module! (And a picture of JamesH)

Before the Pi, I tried a beagle board to do face detection and was overwhelmed with the difficulty, and finaly got a 2-3fps . the other option was the Blackfin BF592 , if you have £2000 for the dev kit ok ! and still not as friendly as the pi. Im looking very much forward to the camera, 5MP more tha...
by beautifulsmall
Thu Jul 26, 2012 11:45 pm
Forum: Advanced users
Topic: Raspberry Pi + OpenCV
Replies: 10
Views: 28991

Re: Raspberry Pi + OpenCV

(unless something like OpenCL gets released for Pi) there's no way you can change that :( well , just had a brownout at 00:39, So how do we get open CL, because if thats what Rpi needs to be as good as a sony camera then BCM can deliver, I know its all about licensing like dolby but if there is a wa...
by beautifulsmall
Thu Jul 19, 2012 8:06 am
Forum: Advanced users
Topic: Raspberry Pi + OpenCV
Replies: 10
Views: 28991

Re: Raspberry Pi + OpenCV

Opencv facedetect Debian / Raspbian compare. Ive been using a logitech C200 usb camera, no external power. installed openCV (did the make overnight) Using ./facedetect in the build/bin/folder . detect time for debian wheezy was ~30 seconds , for Rasbpian wheezy is ~6.5 secs,never under 6 . when i us...
by beautifulsmall
Fri Jul 06, 2012 11:33 pm
Forum: Advanced users
Topic: Overclocking
Replies: 1125
Views: 579484

Re: Overclocking

quick one, if your overclocking the DDR you can reduce the refresh rate , refresh uses the most power . Also there is a DDR settings that is time fixed (analog by nature) which will need to be lengthened if overclocking, cant remember it off the top my head . on the bcm chips i think reg settings ar...
by beautifulsmall
Fri Jul 06, 2012 11:17 pm
Forum: Automation, sensing and robotics
Topic: Q: raspberry pi with Motor Controller
Replies: 5
Views: 2919

Re: Q: raspberry pi with Motor Controller

I have used uart control for dedicated motor drivers such as the low voltage dual motor serial controller from cool components and the very much beefier dual pololu VHN2SP30 and found the system timing well within requirements for dual motor balance. The control message speed compared to the motor r...
by beautifulsmall
Thu Jul 05, 2012 11:29 pm
Forum: General discussion
Topic: future availability
Replies: 25
Views: 5095

Re: future availability

Farnells promise of direct orders on 5th has failed. The initial order surge should have sounded alarm bells. At work I have replaced a £350 spi flash programmer with a pi, My kids school uses a £400 pc to run Scratch. Most companies could replace a host of monitoring and data collection modules wit...
by beautifulsmall
Thu Jun 21, 2012 11:24 pm
Forum: Automation, sensing and robotics
Topic: Balancing Robot
Replies: 183
Views: 48889

Re: Balancing Robot

Im hoping for a camera response with at least 100hz , for object tracking i dont need it to recognise futurama one eye, just a 25cm bright yellow ball, but fast. I implemented the Kalman filter for accelerometer and gyro fusion on a pic but i bet the pi could do it better. Jimi Hendrix
by beautifulsmall
Thu Jun 14, 2012 7:11 am
Forum: Other projects
Topic: Linux device drivers for Rapberry Pi on-board I/O
Replies: 97
Views: 52044

Re: Linux device drivers for Rapberry Pi on-board I/O

I have tried to change the i2c bus speed with a reg write but it defaults back when the i2c function is called. Running Debian with Frank's W1-test update. Using C with i2c-dev.h, Ive cloned the gpio setup_io() function with the address for the BSC0_BASE at 0x205000 and can read the default clock di...
by beautifulsmall
Wed Jun 06, 2012 12:00 pm
Forum: C/C++
Topic: uart comms in C
Replies: 32
Views: 54825

Re: uart comms in C

Thanks tufty, thats worked ok , i just had to modify the
int n = write("Hello Peripheral\n");
to the format int write(int fd, char *Buff, int NumBytes);

int n = write(fd,"Hello",6);
my comms default is 9600baud
cheers.
by beautifulsmall
Tue Jun 05, 2012 8:14 pm
Forum: C/C++
Topic: uart comms in C
Replies: 32
Views: 54825

Re: uart comms in C

Thanks for these suggestions. The PUT32 gives an error and I cant find the source code for the function anywhere, I used the address from the bootloader code and tried outw(65,0x20215040); which is the AUX_MU_IO_REG .This gives a segmentation fault but at least it compiles. The GPIO code looses me w...
by beautifulsmall
Mon Jun 04, 2012 11:38 pm
Forum: Automation, sensing and robotics
Topic: Balancing Robot
Replies: 183
Views: 48889

Re: Balancing Robot

ctrlbreak, if your using the ADXL345 i have some setup and read code here, the first 3 lines are the init, the read function is for the vertical calculation, the sensor was set at 45deg to the vertical to avoid divide by 0 errors (me novice) and use the linear region of the x,y ?or z sensor. I have ...
by beautifulsmall
Mon Jun 04, 2012 10:54 pm
Forum: Automation, sensing and robotics
Topic: Balancing Robot
Replies: 183
Views: 48889

Re: Balancing Robot

I have made several balancing robots and the faster the loop speed the better the result. Using a Pic33 at 40MHz gave a 1000 loops/sec with gyro/accel / pid loops/ pwm update. The Pic was good legs but the head was missing. I tried a beagleboard with camera and object recognition and this was almost...
by beautifulsmall
Mon Jun 04, 2012 10:30 pm
Forum: C/C++
Topic: uart comms in C
Replies: 32
Views: 54825

uart comms in C

Hi, want to use the header uart for comms to a pic, I have stopped the uart console comms by removing ttyAMA0 references from /boot/cmdline.txt and /etc/inittab and can get comms to my laptop terraterm with minicom on Rpi. But how do I send data from a C program ? Running Debian with Frank-buss w1-t...

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