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Posted by Gordon McComb on February 8, 2009, 11:17 am
It's not a bad concept but you have to stop the robot to take a reading.
They are useful if your robot is acting as a sentry and simply waiting
for motion to go across it.
Apart from that it *is* a great price. Looks like a terrific item for
hacking and making all sorts of nifty little projects.
-- Gordon
Frnak McKenney wrote:
>
> Anyone thinking about using PIR motion detection on a robot? I ran
> across a new one yesterday while I was placing a parts order at
> Mouser Electronics (www.mouser.com).
>
> Mouser is offering Zilog's new ePIR motion detector module, an
> MCU/sensor/lens assembly with a serial interface. The best part is
> the price -- $6.50USD -- since, the last time I looked, a basic 5V
> TTL PIR module with lens ran $7-9.
>
> Listed as an "SBC" item, the 8-pin ePIR runs off 2.7-3.6V, needs
> around 9mA (2.3mA in "sleep" mode), and can drive 25mA.
>
> I can't reach Zilog's server just now, so I can't pull up a copy of
> the PS0284.pdf Product Specification, but the PB0223.pdf
> introductory brochure I grabbed yesterday mentions the bidirectional
> 9600/8/n/1 serial interface offering access to sensitivity, range,
> and direction controls.
>
> No, I didn't order one. <sigh!> I have too many unfinished projects
> sitting around just now... so I have to come up with a new project
> to justify ordering a couple. Wonder if you can reprogram the Z8
>
> Enjoy... Oh, and the new Sharp 3.5_W_ LED-array modules look neat,
> too. (Aha! The world is _obviously_ just waiting for someone to
> develop a new spelunking servomechanism!)
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