[chbot] Expressions of interest in a construction project

[jimmy allen]

I would take one(Processor + board)

On 8/27/09, Charles Manning <manningc2 at actrix.gen.nz> wrote:
> Hi Richard
>
> Are you proposing using a commercial PCB outfit to build these? If so then
> you
> may as well use a surface mount micro since that gives two more ADCs.
>
> Perhaps add an optional 3V3/5V regulator section. eg. If driving a 3V device
> like a GPS module or whatever.
>
> There are a few simplifications that would assist if you wanted people to be
> able to make them at home using the laser printer toner fusing method.
> 1) Replace the 6 pin programming header with an in-line header next to pins
> 15..20. That means you don't need those thin tracks under the micro and
> between pins. Thicker tracks make for easier home PCB making.
> 2) Use a three legged resonator rather than a crystal. It doesn't need the
> two
> extra caps. However that makes part finding a bit harder.
>
> For one-off programming (eg to introduce an arduino bootloader) also
> consider
> the ponyser programmer. Google will find.
>
> -- CHarles
>
>
>
> On Wednesday 26 August 2009 21:55:46 Richard Jones wrote:
>> Is anyone interested in being involved with a construction project to
>> build
>> PCB similar to the early Arduino?
>>
>> We could hold sessions at the Christchurch Creative space on Wednesday
>> evenings to build copies of the AVR PCB that I use in my micromouse and we
>> plan to use in Sachins hexapod. Constructing the kit could be a great way
>> to learn about hardware and soldering, learn the 'C' programming language,
>> start a new robot, or just have fun. Folks would need to bring their own
>> tools.
>>
>> The Eagle files for the design are available here:
>> http://homepages.ihug.co.nz/~rjtp/AVR/ suggestions welcome.
>>
>> I expect the kit cost will be about $20NZ including the ATmeg328P-PU
>> processor, no problem if you just want the kit (or just the processor) :-)
>>
>> To use the kit in projects you will need a programming device as well.
>> This
>> usually takes one of three forms:
>> 1. A parallel port programmer comprising a 25 way connector & a few
>> resistors.
>> 2. A bootloader in the AVR and a pc serial port or USB to serial adaptor
>> and the interface shown above the processor board schematic.
>> 3. Simplest option: The Ladyada USB programmer.
>>
>> 'C' Programming support using avr-gcc is free for Windows, Linux and Mac
>> OSX.
>>
>> If interested please reply with your name, number of kits wanted and
>> whether or not interested in the construction evenings. I'll tally up the
>> numbers and publish them by email from time to time to cope with those who
>> get the digest email.
>>
>> I expect the evenings will be in a few weeks as it will take a while to
>> get
>> final numbers and parts.
>>
>> Cheers
>>
>> Richard
>>
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>
>
>
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