I was successful getting my Logitech c270 to stream using mjpg-streamer and the instructions in this thread: http://www.raspberrypi.org/phpBB3/viewtopic.php?f=38&t=19661 I am able to view the video stream on my desktop, my laptop, and my Nexus 7 using firefox (desktop and laptop) and chrome (Nex...

Jump to post

I was successful getting my Logitech c270 to stream using mjpg-streamer and the instructions in this thread: http://www.raspberrypi.org/phpBB3/viewtopic.php?f=38&t=19661 I am able to view the video stream on my desktop, my laptop, and my Nexus 7 using firefox (desktop and laptop) and chrome (Nex...

Jump to post

I just discovered a nifty way to use servoblaster over a wireless (or wired) network link. Both computers need to be on the same network. First, install netcat onto both the robot controller and the control station using: sudo apt-get install netcat Keep in mind that I have "robotcontroller&quo...

Jump to post

I haven't posted an update in a while because I have been working, unsuccessfully, on getting a usb webcam to stream from my Pi robot controller to my Pi control station. But, I just discovered something that is noteworthy. One of the tools suggested to stream the webcam is netcat. Though it didn't ...

Jump to post

Thanks for the post. I already had my camera (Logitech c270) working with guvcview, so I knew it worked. I used your instructions with no changes and had success. It helps to know that the browser looking at the stream needs to use the address "http://IP/?action=stream". Be sure to include...

Jump to post

Enter the following into the "search" box at the upper right of the forum page "wifi servo control". The results should prove helpful to you.
Todd F.

Jump to post

Off the shelf, the Raspberry Pi can control up to 8 RC style servos (or motor drivers) using PWM control. This thread tells how: http://www.raspberrypi.org/phpBB3/viewtopic.php?f=37&t=15011&hilit=servos For something like a camera pan/tilt, use position control servos. For driving motors, us...

Jump to post

Chris,
To give a good answer, we need to know what type and size of motor you are talking about.
-steppers
-brushed DC
-brushless

Also, how much current will the motors draw? Are we talking tiny little motors for a desktop robot, or something that will power the spindle on a machine tool?
Todd F.

Jump to post

I finally found a solution to making the wireless IP address static. It's in this post :
viewtopic.php?p=180585#p180585

I'm changing the wireless IP of robotcontroller to 192.168.1.11
Todd F.

Jump to post

I'm working on developing a similar system. You can see my current status in this thread: http://www.raspberrypi.org/phpBB3/viewtopic.php?f=37&t=19939 My goal is to minimize non-Pi hardware if at all possible. So far, I haven't needed to use any more boards (like the Arduino, Gertboard, or adafr...

Jump to post

Here is a status update on my project. I now have the joystick servo control working over a WiFi link. I'm using Raspberry Pis for both the control station and the robot controller. The control station Pi is hardwired to a wireless router, and has a static IP. The robot controller Pi has a WiFi tran...

Jump to post

I can never remember all the arbitrary pin numbers on the GPIO, so I just look at the picture of the GPIO pins (http://elinux.org/images/2/2a/GPIOs.png). Look at the dark green pins and count down from the top left. The top left green pin is servo 0. The next one down is servo 1. Moving to the right...

Jump to post

Smcintosh,
Whereabouts in the world are you located?
Are you having trouble on the software end, or the hardware end of getting your servos working?
I just posed a new thread about a Python program I wrote that lets you control the servos with a joystick.
Todd F.

Jump to post

I've written a Python 3 program which controls servos and motors using input from a joystick. Up to 8 PWM channels can be controlled using just the Raspberry Pi GPIO pins. This program uses code and concepts from multiple sources. Credits: I use the servoblaster kernal and driver to output the PWM s...

Jump to post

Video of the script user interface here.
http://youtu.be/oE-9DMR_x5Q
Todd F.

Jump to post

Thanks, Richard. I'll add that line. Any thoughts on how the turbo mode effects the output signals of servoblaster? I've got it disabled currently, but I'd like to enable it if won't mess with the signal timing. It seems to me that if the clock frequency can change to faster speeds to meet computati...

Jump to post

I've been working on getting the servoblaster drivers up and running. I also was unsuccessful getting the files to load automatically, so I had to improvise. To start with, I made simple bash scripts to load and unload the driver. "sbload" works great, but "sbunload" doesn't comp...

Jump to post

That was the problem. I renamed it "tftest" and it worked properly. I knew there had to be a simple answer.
Todd F.

Jump to post

I'm about to rip my hair out I'm so frustrated. I just flashed back to a fresh Raspberrian, and updated. I've created the classic "hello world" script in /usr/local/bin, called "test". When I check my path with "echo $PATH", that directory is in my path. "pwd"...

Jump to post