On Feb 27, 3:40 am, bvm firstname.lastname@example.org wrote:
centrifugal clutch , with a high stall speed
so motor can continue to drive the
other accessories .
A small solenoid can lower stall speed
so you can accelerate more slowly .
The solenoid can even rotate with the
clucth ,( as Airconditioner clutches do .)
Its bad idea to power all your stuff with
just a battery . So keep the motor running
and generating electricity .
Im playing with BW , CDD 300K-Pixel
cameras . They are analog , so i'll
put comparators on each scan line ,
and differentiate the scan line , looking
for edges . MCU will send a charge
to a small cap , on the comparators
"Vref" input .
This allows the image to be "preprocessed"
so the MCU wont need to do as much
I expect several microseconds response
Many people do it all in s/w and find
its far too slow !
You must allow the comparators to
make a value judgement about a sharp
image , as it moves about .
Next problem with cameras is shake .
I will use a front surface mirror , and
move it will solenoids , in a jerky fashion .
Somewhere in the sum of the 2 motions
Camera/mirror , there will be a place where
an image will be clear , in spite of very
high camera movement .
Camera is a low cost . It has a adjustable
integrating period , which acts as a shutter
and an iris , if there is blurr , MCU , sends
a command to shorten the integration
period . This also lowers the light reaching
the CCD .
The big excitement is the software .
Ever since mcu's dropped in $$ , and
up'd the perf' 500% , ive been , hopping
for a spare monent to create an 8KB
OpSystem for the ARM 144 pin CPU .
Now i have a pile of hardware of all sorts
EVB's to NDS Lites .
The instruction set is nice , only the
T.I. 430 has a better one . But it has
other draw backs .
You can buy an ARM7 with 64KB or 98KB
of high speed built in SRAM and it has
power lower than any external SRAM !
This makes it 10 times faster than
a Z80 or MicroChip or Rabbit or ....
So ! Join the project ! Buy a 65KB SRAM
ARM from www.microcontrollers.com /
click ARM , BOARDS , ARM7 .....
I dont work for them , i bought from
www.armkits.com , and got ripped ,
i bought 2 GP2X's and got ripped ...
Microcontrollershop is the only name
left on my approved buyers list !
I emailed Sparkfun.com , 4 times , but
they dont answer , they dont want my business.
I had trouble with
www.gamersection.ca , they have bad
policy , so i bougt form GP2Xstore ..
They dont care about keepping customers
only about getting govt subsidies ..
BTW , i think i can do a parallel port
on a NoteBook computer , simply decoding
the parallel at the USB MassStorage box .
If i send a copy to USB-HDD no harm ,
the file just gets rewritten , but my logic
chips will decode and grab it as data , sending
it to my ARM project mcu .
I will not need to send data opposite direction ,
cause what can you say to M$ WXP ?!!
I'll instead store on SD card .
Ah ! What would Robots be without
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