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Arduino Uno + Raspberry Pi + workout stepper.

dtsartsanis

Hi everybody this is a very simple project i just finished.

 

For this project i used an Arduino UNO, a Raspberry PI model B, a couple of leds and a workout stepper. Usually workout steppers have small displays and you have to look down to see the progress of your workout. In my project i managed to remove the old display, connected to Arduino UNO as a simple switch. Then UNO is running the sketch through the Raspberry and using Pyserial, Bottle.py and Arduino-Serial-to-Browser so we can have our stepps to our browser.

 

Raspberry PI is using the latest raspbian image and after we fully update and upgrade it, we have to install the Arduino IDE. i preferred to install the latest one 1.6.0 which works fine.We dont have to install pyserial because it is already installed, but we have to install Bootle.py (see here Bottle: Python Web Framework — Bottle 0.13-dev documentation ) and Arduino-Serial-to-Browser from here https://github.com/whichlight/Arduino-Serial-to-Browser .

 

We start by uploading the sketch to UNO, then we open a terminal and we run the Arduino-Serial-to-Browser.py and finally we can open a browser and we type http:/127.0.0.1:8080.

 

The Arduino also have 5 leds. 4 for our step progress and one blinking for every two steps because the sketch counts 1 step for every 2 physical steps.in the delay time i noticed that if you set 500 ms then we have 1 step for every 1 physical step.

 

Attachments:
arduino_stepper_counter_leds.ino.zip

  • Nice work! image

     

    You could simplify your setup and look at arduino-ethernet bridges and host the web page on the UNO.

  • in reply to gadget.iom

    I wanted to create something like a media/fitness center. Now with the new Raspberry Pi 2 you can watch your favorite youtube videos or check your emails during your workout.But i dont have a Raspberry Pi 2 so i made it for the model B. But still works image

  • in reply to dtsartsanis

    Good stuff. image

     

    Looking forward to seeing the project progress.

  •   I like the way you used the Raspberry Pi with Arduino. Especially Arduino-Serial-to-Browser software gem. The combination of Arduino Uno with Raspberry Pi looks to be equivalent to Arduino Yun except the power of the Pi is more than Linux on the Yun! How much storage did the sketch use on Uno including libraries?

    Thanks,

    Clem

  • in reply to clem57

    Sketch uses 3.294 bytes (10%) of program storage space. Maximum is 32.256 bytes.

    Global variables use 202 bytes (9%) of dynamic memory, leaving 1.846 bytes for local variables. Maximum is 2.048 bytes.

  • Just managed to embed a youtube video to the html file

     

    Open with a text editor the index.html file at the Arduino-Serial-to-Browser folder and at the top add the following lines

     

    <html>

    <body>

      <object data="http://www.youtube.com/embed/W7qWa52k-nE"-->you can add here the video of your preference.

      width="560" height="315"></object>

    </body>

    </html>

     

    Then run the program and you are ready.

     

    *i forgot to plug in the audio jack to the Raspberry Pi and you cant hear any sound, but it plays fine and also this is with a wifi connection which is also fine for the model B.

  • in reply to dtsartsanis

    dtsartsanis

        Fantastic way to exercise and watch the Ben Heck show.image

    Clem

  • in reply to clem57

    You can also use the above project with the Raspberry Pi A or A+ but the content of the serial port will be displayed at the terminal and we can save them also to a text file. We know that the Raspberry Pi A/A+ have only 256 memory so it would be very difficult to use the browser.

     

    Start a new txt file and add the code from the attached file and then saved it as a python file with a .py extension.

    Load the sketch to Arduino, next open a terminal and cd to the folder that you have saved the above file. Run the file with sudo python and your .py file.

    Your steps then will be displayed to your terminal and at the same time a file will be created in the same folder with your .py file, called templog.txt with your steps.

     

    If you see the code there are the below lines

     

    port.setDTR(False)

    port.flushInput()

    port.setDTR(True)

     

    these are important and if you remove them you will see your content displayed with \r\n at the end.So these 3 lines actually "cleaning" the serial from these characters.

     

    In situation where u want to save data from arduino's serial port  in a pc u can still use a very handy program called Cooltherm and can be found here Roger Meier's Freeware

    But in situation like the Raspberry Pi where u cannot  run x86 programs the above way is a good solution.

    U can also use the above code to save data from a temperature sensor connected to a Raspberry Pi (you will have to remove first the 3 lines above) and then insert the data from the .txt file to a LibreOffice file.

    Attachments:
    serial_port_data_logging.zip

  • This is how u connect the stepper to the Arduino and the led's connections.

     

    image