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

[jimmy allen]

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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>