[chbot] [chchspace] Re: droid hackfest - Sunday?

Sat Jun 27 06:28:39 BST 2009

Cool!

If you have any built robot that can have a brain transplant then that
would be cool. Otherwise just bring along whatever you want to work on -
craft or electronics or laptop for software or whatever.

Otherwise if you know some electronics then I could find something for
you to design/build (I have various useful parts!).

Cheers

Morris

On Fri, 2009-06-26 at 22:29 +1200, jimmy allen wrote:

> i will try to get down on sunday (probably get down around lunch)
> Arduino board use AVRs don't they?anjd i am currently learning to
> program the and would like to try and help with your project.is there
> anything i could bring along that might be useful?
> 
> On 6/26/09, Morris <skibear at gmail.com> wrote:
> > Perhaps we can get a few people together to do some Arduino hacking in
> > the afternoon? There are normally a few Arduino users along and I know
> > there is quite a bit of interest in wearable electronics and the LilyPad
> > Arduino
> > (http://www.sparkfun.com/commerce/product_info.php?products_id=9266).
> >
> > You can use my Arduino for an hour or two - I can do some soldering or
> > building instead!
> >
> > Cheers
> >
> > On Thu, 2009-06-25 at 18:53 +1200, .c|A wrote:
> >
> >> That sounds like fun, I'll come along if I'm able (maybe not at 10am
> >> though :)) I'm the guy with the netbook in a book cover that was there
> >> a few weeks ago
> >>
> >> I'd like to chat about Arduinos with someone sometime anyway - I'm
> >> quite new to them, but they look so easy to use that I'm writing a
> >> shopping list for Mindkits/Sparkfun :) I'd like to strap a bunch of
> >> Arduinos and sensors to myself and explore the possibilities of
> >> wearable computing. So perhaps there's some crossover with sensors on
> >> robots?
> >>
> >>
> >> cnawan, Vaughan
> >>
> >> On 6/25/09, Morris <skibear at gmail.com> wrote:
> >> > Who is keen on doing some robot hacking on this Sunday and next Sunday?
> >> > 10AM till lateish?
> >> >
> >> > If possible discuss on chchspace at googlegroups.com (sign up if you
> >> > haven't - http://chchspace.nztech.org/)
> >> >
> >> > Options:
> >> > * You could bring your own robot bits
> >> > * I could help someone that want to do the electronics/mechanics but use
> >> > python and an arduino for control.
> >> > * You could help me (see below!)
> >> > * Just come along and do some other stuff! (Normal chch creative space).
> >> > * I have second hand motors and batteries I can sell for what I paid for
> >> > them - $1 each. I have about 10 each of : 20W motors, 7.2Volt 1500mAh
> >> > NiMH batteries, and 12Volt SLA/VRLA batteries which were 800mAh new but
> >> > I guess wont be near that now.
> >> > * I would love some criticism of what I have been doing!
> >> >
> >> > Following pdf has excellent information and links to projects using the
> >> > WL520gU for hardware projects:
> >> > http://mightyohm.com/files/wifiradio/Jeff_Keyzer-Hacking_the_Asus_WL520gU.pdf
> >> >
> >> > Cheers, Morris
> >> >
> >> > Developing a wifi remote controlled robot that can be controlled by a
> >> > GUI. Using browser e.g. Internet Explorer on Windows, or Safari on
> >> > iPhone). General design can be used to control any actuators or read
> >> > many sensors (e.g. USB devices!) but is only suitable if you are not
> >> > trying to make a "micro" sized robot (and is not good a good fit if you
> >> > want robot to be alive for many hours without recharging -- unless you
> >> > use a car battery!).
> >> >
> >> > Progress on the following design:
> >> >
> >> > 1. Dumb Duemilanove/Arduino microcontroller
> >> >     * So far have used pyduino (running on the router) to do PWM control
> >> > of an LED, and reading a micro-switch. Just done using command line
> >> > using example.py that comes with pyduino to select input/output pin and
> >> > watch results.
> >> >     * ATMEGA328 connected to router using USB (FTDI serial
> >> > communications).
> >> >     * Installed firmata onto arduino (standard sketch that comes with
> >> > arduino.cc build tools). www.firmata.org
> >> >     * Running pyduino to control firmata code.google.com/p/pyduino
> >> > Treat microcontroller as dumb device (no C code required!).
> >> >     * Super simple to read analogue inputs too (haven't yet tested).
> >> >     * There is firmata code for controlling servos too (I want to get
> >> > that going soon but I would like help).
> >> >     * Later on will be <$10 using cheaper ATMEGA chips with veroboard or
> >> > simple PCB. Current board is $65 but only one evening's work to get it
> >> > up and running using USB so worth it!
> >> >     * Later can use cheap serial connection ($5 USB, or maybe connect to
> >> > interal 3.3V serial port of the router)
> >> >
> >> > 2. wireless router running Linux and Python scripts.
> >> >     * Router is to be the main brains of robot. Currently testing Python
> >> > scripting (controlling an Arduino - fun!) but intend to use Python web
> >> > server for GUI interface and Ajax (so can control robot from web page
> >> > using mouse and keyboard).
> >> >     * Asus WL-520GU wireless router USB 2.0. Costs $86 from
> >> > http://www.cbcnz.com/product_info.php/products_id/146191 on corner
> >> > Fitzgerald and Kilmore - they have them in stock. Maybe a little cheaper
> >> > from AKL.
> >> >     * Running OpenWRT Linux from www.openwrt.org - Kamikaze 8.09.1
> >> > version using kernel version 2.4 (tftp the file
> >> > http://kamikaze.openwrt.org/8.09.1/brcm-2.4/openwrt-brcm-2.4-squashfs.trx
> >> > into the unit).
> >> >     * Running Python installed to a 1GB USB stick (because I wanted the
> >> > full version not python-mini and standard 4MB flash not big enough for
> >> > full version).
> >> >     * wireless working well.
> >> >     * super easy to add and remove packages from the unit using opkg.
> >> >     * the internal flash is mounted as a flash drive and you can just
> >> > edit individual files or upload them.
> >> >     * USB is not true 2.0 speeds due to 200MHz CPU hitting 100% at
> >> > relatively low speeds.
> >> >     * Kernel 2.6 available but broadcom driver is apparently not stable
> >> > so wifi performance bad.
> >> >     * Haven't started on web server stuff - but not expecting anything
> >> > difficult. Could also use the internal luci (Lua script) web server if
> >> > have to.
> >> >    * Using USB hub so can also plug in USB memory and Duemilanove at
> >> > same time.
> >> >
> >> > 3. Electronics
> >> >     * What I intend to work on this Sunday! Any help or criticism would
> >> > be appreciated.
> >> >     * Or I would love to just use the router and Duemilanove with your
> >> > electronics&mechanisms (then I can work on Python control control code
> >> > or web server instead!)
> >> >     * Planning to wire up motor driver electronics Sunday - got $10
> >> > L298N dual 3A motor driver which is super simple to use.
> >> >     * Got 7.2V and 12V batteries but no proper chargers yet. (ideally do
> >> > using arduino!)
> >> >     * Got some switches and other sensors.
> >> >     * $8 USB sound card (still to arrive from AKL) - need simple
> >> > amplifier for speakers (maybe use microphone?).
> >> >     * Intending to play with a USB webcam (maybe use microphone?).
> >> >
> >> > 4. Mechanics
> >> >     * Tried motors and wheels. Goes fine with 12V and fast with 24V!
> >> >     * Currently just hacked together badly (wire and random junk).
> >> >     * Investigated places to get Aluminium framework "meccano
> >> > compatible" for a flexible framework that can be quickly cut and
> >> > screwed. Would be best if can share costs.
> >> >     * Got some Servos and intend to use some mecanno to make an arm.
> >> >
> >> >
> >> >
> >> > >
> >> >
> >>
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> 
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