Alt-BEAM Archive
Message #03485
To: Wilf Rigter Wilf.Rigter@powertech.bc.ca
From: Wouter Brok w.j.m.brok@stud.tue.nl
Date: Fri, 21 May 1999 20:46:03 +0200
Subject: [alt-beam] Re: Tricore info question
Hello Wilf,
Wow, Wilf, that looks nice ... I mean, I didn't study the circuit yet
(always takes me some time to figure out the characteristics) but I'm sure
the description is correct and that sure looks promising. I like the
synchronizing behaviour ... it is really promissing, not only for
herd-behaviour but for adapting to environments in an extra way: any other
sensor can be modified to change the walking of the robot in this new way !
Great !!!
Wouter Brok
>Hello Wouter and list
>
>Sorry for the delay, I've just been very busy. To my surprise, the tricore
>has 3 modes. Zero and one process and 3 processes at very high frequency.
>The PNC restores normal one process mode. Here's an example of another "odd"
>core: a Pentacore that places the PNC inside the 4Nv loop. On power up, the
>PNC Nv (not Nu =) resets the other Nvs. Since it's inside the loop, it
>resets them one every stepping cycle, automatically reinitializing the core
>in case of saturation. With the adjustable 1M pot you can vary the speed of
>the walker from full speed to 10 seconds for one stepping cycle.When set for
>full speed, the walker should start walking as soon as the power is applied.
>I haven't time to build this at the moment but it should work as advertised.
>One neat idea is to add a IR receiver that senses IR pulses and connect the
>active low output of the IR receiver to the bias point (x) of the PNC. Now
>when you have a Pentacore bot adjusted to slow speed, then you can control
>it with a TV remote control when pressing any key generates an IR pulse that
>causes it to take one step cycle at a time. That is what I meant by core
>synchronization. If you want some interesting herd synchronizing behaviour,
>build several Pentacore bots and connect a visible LED and a IR LED (IR
>beacon) to the output of the first NV after the PNC. Then the PNC of the
>"fastest" bot will time out and at the start of that bot's step cycle it
>will radiate an IR pulse which will trigger the next nearest bot and that
>one to the next cascading away from the center until all the bots within the
>receiving radius take one step cycle with a wave of blinking visible and IR
>LEDs, one step after another.
>
>sound like fun?
>
>enjoy
>
> Wilf Rigter mailto:wilf.rigter@powertech.bc.ca
>
> <>
>
>
>> -----Original Message-----
>> From: Wouter Brok [SMTP:w.j.m.brok@stud.tue.nl]
>> Sent: Wednesday, May 19, 1999 11:12 PM
>> To: Wilf.Rigter@powertech.bc.ca
>> Cc: beam@corp.sgi.com
>> Subject: Re: Tricore info question
>>
>> >Yes needs a PNC
>>
>> Is that so in a 3 Nv-ring? I thought the first ring-like structure of
>> Nv-neurons able to have more than one (read two) processes is a 4 Nv-ring
>> (microcore), because processes need to be seperated by at least one
>> Nv-neuron, if you understand what I mean. This would mean that a tricore
>> is
>> able to contain either zero processes or just one .... or am I missing
>> something with the in-output delay of the inverters (Dennison)?
>>
>> You are right Wilf, about the 'special funtion' of the odd neuron ...
>> great
>> idea ... a lot of new stuff to make up and experiment with !!!
>>
>> Regards,
>>
>> Wouter Brok
>>
>>
>>
>
>Attachment Converted: "c:\eudora\attach\Pentacore1.gif"
>
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