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  • Author Author: justiciero24
  • Date Created: Date Created
  • Views 1984 views
  • Likes 6 likes
  • Comments 14 comments
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Raspberry Pi wifi explorer robot with camera.

justiciero24

Hi everyone!

 

I just want to show the project that I am working on. So lets go, I decide to make an explorer robot just for fun and also learn something in the way. As you can see the chassis is made of clear acrylic and have a nice wheels that allow the robot to move easily in an indoor environment. The robot is controlled via a web interface and you can see what the robot see, so you can control it remotely from another room or also from another place using an internet connection.

 

I used webiopi to create the web interface, so the controls and video stream are accessible from any web browser that supports javascript. The main functions are go forward, backward, turn left, turn right, stop and the toggle the led light that allow the use the camera in dark or low light environments.

 

Here are some photos of my robot:

imageimage

In this photos you can see the camera and the led light in the front. In the back are the on/off switch, a power on led (green) and the DC input for charging a 7.4v lipo battery and the battery status led (red).

imageimage

In this photos you can see the Raspberry Pi with the wifi dongle and all the connections necessary for controlling the robot. In the bottom you can see the battery, voltage regulator, H bridge and the lipo battery charger.

imageimage

Here its a short video showing how it works, as you can see the video streaming is fast enought to allow a proper control of the robot movements.

 

 

I hope you enjoy this little post showing my new robot.

 

Best regards,

Daniel Fernandez R.

  • in reply to jkutzsch

    Hi,

     

    No, it's not yet finished. Sorry. I still making some improvements like this one:

     

    It´s a mix of kits and custom made parts. For example the chassis and robotic arm are kits, but all electronic controllers (motor h bridge, battery charger, servo controller, power management and some other things) was made by me. This is also a tricky part when making the tutorial because I have a lot of things to document and explain, I am thinking it will be easier to design a board with all the stuff and sell it for the people who wants to build this.

     

    Thanks for your interest!

    Daniel

  • in reply to balearicdynamics

    Hi

     

    Thanks. image Not really, the raspberry have enough power to do all the  processing and streaming without significant delays. The slow frame rate is a consequence of the video format for streaming. I used MJPEG to give compatibility with all browsers on all platforms, unfortunately this codec has a delay of 2 seconds and is low quality. But if you use H264 codec (native supported by the raspberry)   you can do the streaming without delay and in HD.  But you will need a plugin in order to receive the video in a browser.

     

     

    Thanks for your interest!

    Daniel

  • Hi Daniel,

     

    nice project, very cool. Is there a reason determined by the hardware limits in the slow frame rate of the camera on the web ?

     

    Enrico

  • in reply to justiciero24

    Did you ever get a chance to put a tutorial together?  Curious on if you used a kit or kits to assemble a lot of this or if you had to hand source parts.

     

    Thanks.

  • in reply to Former Member

    I forget to mention that the main file is RaspBot.py and the html webpage is the one called index.html. The other files are libraries and test code.