Sensors on the Pi

Using sensors interfaced with I2C, SPI, serial, and GPIO on the Pi -- interfacing, level conversion, speeds, programming, and more! Tell us about what you're doing (or want to do) and how you're doing it.

Google map - http://tinyurl.com/seneca-at-york

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  • David J.

    At this meetup someone was showing a Firmata / Arduino connection? I was wondering what baud rate this was running at and was it over the standard USB ports?

    May 7, 2014

  • Henry

    Here are some clear views of what is involved.
    http://www.summitmowers.com/ztr-22.php

    January 16, 2014

  • Henry

    It looks like an interesting project. I can certainly help with the design. The remote control and motor drive are available "off the shelf". Most of the effort will involve mounting the motor drive.

    Steering is done by spinning one motor faster than the other. No mechanism is required.

    January 16, 2014

  • Vince A.

    Well it looks like proof of concept has already been done. This guy Aron Makin has already done one. Now I just have to do my own version with Wifi Video on the Raspberry Pi
    http://wgn.fm/2014/01/07/guy-builds-remote-controlled-snow-blower-for-world-peace/

    He started with the remote lawn mower and then retro fitted the snow blower on the same frame.
    If anyone still wants to join me let me know.
    Vince

    January 16, 2014

  • Vince A.

    Thanks Henry. I'm also using a book "Arduino Robotics" the Explorer-Bot in Chapter 8, as my guide for doing this project. And, "Raspberry Pi for Secrets Agents" for intro to webcam, audio, wifi and GPS.

    Looks like MeetUp masks the email address, I'll try this for those who want to contact me my email is (va.otm.ca) @ (gmail) (.com).
    I'm not sure if MeetUp will mask this too.

    Vince

    January 13, 2014

  • Robin G.

    Hey guys, just for reference in regards to my MisterHouse home automation question. I found new software that has an sd card image for the Raspberry Pi which supports gpio. Its called HomeGenie available on sourceforge.net
    Its informational website is
    www.generoso.info/homegenie

    January 13, 2014

  • Henry

    Vince, if you do a search for "robot lawn mower", you can get ideas from other designs. The RC approach can be done using off the shelf parts. Active surplus usually has a supply of used wheel chair drives motors/mechanisms for about $200. I think it would be better to start with hobby robotics/RC parts and then scale up once the design has been proven.

    January 11, 2014

  • Vince A.

    I understand that you are all busy and tied up with your own projects, but if you want to join me on this project, or any part of it, such as the programming, the physical design, or just providing some words of wisdom, you can contact me at [masked] .
    I want to thank all of you for your participation and discussions that you’ve done at the Raspberry Pi meetings that I have been to, and I look forward to attending more meetings in the future to better educate myself with the Raspberry Pi.
    Vince Abate

    January 11, 2014

  • Vince A.

    Hi Guys,

    Thanks for hearing me out about my so called "Broomba"-Robo-Yard-Mate project. I will be picking up my first Raspberry Pi this weekend, and look forward to starting to familiarizing myself with the hardware and software to control motors, servos, lights, cameras etc... I believe this hobby project will be both challenging and interesting to complete. Even though there are many commercial and legal cons to this project, I think it would be cool to have a “Big Boy’s Toy” remote buddy around the house to help with cutting grass, shoveling snow or whatever will be designed into it (just hope this big buddy doesn’t sabotage the neighbors property or family for that matter).

    January 11, 2014

  • Jonathan

    Great meeting thanks guys. Here is a project tutorial involving the DS18B20 1 wire temperature sensor that I mentioned last night.

    http://projects.privateeyepi.com/home/temperature-sensor-project-using-ds18b20

    January 10, 2014

  • Stewart C. R.

    The Arduino-compatible cellphone-controllable motor I mentioned last night is the Moti: http://moti.ph/ They're a local startup. I don't think they're quite in series production yet, but the prototypes I've seen demoed are quite clever. Sure, you could homebrew something for less $, but this is plug-in and go.

    January 10, 2014

  • David J.

    Excellent - loved it, wish I could of made if for the whole time

    January 10, 2014

  • Robin G.

    Quite interesting meeting! Thanks guys!

    January 9, 2014

  • Randy G.

    For the Pi-powered pinball machine I was talking about, check out http://diypinball.ca - fresher content in progress :)

    January 9, 2014

  • Stewart C. R.

    Can't remember what I said I'd talk about at the last meeting. Is Greg doing I2C or SPI? I could bring the Quite Rubbish Clock - https://www.youtube.com/watch?v=PyvJUN5JRkM

    January 4, 2014

    • Greg

      There is also a similar serial protocol for the Android Accessory Dev Kit. IOIO uses it. Anyone want to demo ioio? Google "ioio serial protocol",or "IOIO" for more info.

      January 5, 2014

    • Stewart C. R.

      My little tutorial for Python 2.7 and spidev with a 3008: http://scruss.com/blo...­

      January 9, 2014

  • M A

    I don't think I can make it today. Coming down with something. This Flu Season! :(

    January 9, 2014

  • David J.

    I'm working on a Node project to make it super easy to control devices / monitor sensors from apps and REST APIs. I'd love to chat with anyone interested in this sort of thing tonight. I'll be wearing a blue & white checkered shirt (2mm pitch).

    January 9, 2014

  • Henry

    Another way to use sensors would be to connect a nrf24L01+ wireless transceiver to the pi. These are very low cost boards with a range of about 30m. The other end can be any MCU board with capabilities not found on the pi, including analog pins, high speed digital, gyroscopic sensors, displays, and so on. I'll demo what I'm working on, but I just started, so it is not functional yet.

    January 8, 2014

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