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Has anyone ever tried to upgrade the memory in the RCX? ( External RAM that
is ).
What about upgrade the CPU to 60kbyte PROM version? No need to use expanded
mode, then a ton of I/O would be available...
Anyone thought about building a RCX replacement ( besides JCX ) that would
fit into the existing RCX package? Something with flash?
Would lejos welcome this? Or would it be too much effort to port to another
CPU?
Any kind of an open source hardware project like this available?
Thanks,
Rand
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Rand Krakora wrote:
> Has anyone ever tried to upgrade the memory in the RCX? ( External RAM that
> is ).
>
> What about upgrade the CPU to 60kbyte PROM version? No need to use expanded
> mode, then a ton of I/O would be available...
>
> Anyone thought about building a RCX replacement ( besides JCX ) that would
> fit into the existing RCX package? Something with flash?
>
> Would lejos welcome this? Or would it be too much effort to port to another
> CPU?
>
> Any kind of an open source hardware project like this available?
take a look at Robobricks
http://www.gramlich.net/projects/robobricks/
I'm also playing around with such an idea, but smaller (most devices
should fit in a 2*4 brick) and faster (115 kBaud bus). My first notes
can be seen here
http://oase.uci.kun.nl/~mientki/PIC/Pic_frame.htm
best regards,
Stef Mientki
>
> Thanks,
> Rand
>
>
>
>
>
>
>
>
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In lugnet.robotics.rcx.java, Rand Krakora writes:
> Has anyone ever tried to upgrade the memory in the RCX? ( External RAM that
> is ).
>
> What about upgrade the CPU to 60kbyte PROM version? No need to use expanded
> mode, then a ton of I/O would be available...
>
> Anyone thought about building a RCX replacement ( besides JCX ) that would
> fit into the existing RCX package? Something with flash?
>
> Would lejos welcome this? Or would it be too much effort to port to another
> CPU?
>
> Any kind of an open source hardware project like this available?
>
> Thanks,
> Rand
Hi Rand,
I have started an hardware replacement for the RCX. Its based on an 16bit
µController, an Infineon (Siemens) C164 with 128kb flash, 128kbSRAM and 64kb
EEPROM. The controller plus the all memory is on a module from Phytec
"Dipmodule 164", like a big 40 pin IC. Therefore all the dificult parts (PCB
layout ...) are already solved. My PCB contains only the interfaces to the
outside world. This are a RCX compatible IR tranceiver, I2C Interface, 6
motor driver, 8 AD inputs (2 of them active RCX compatible), status LEDs and
an beeper. No LCD, but can easily attached to the I2C bus.
Bert
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I'm using Lego MindStorms for didactical laboratory at Politecnico di
Torino.
I'm interested in your project. I have two questions:
Would it be difficult to reproduce in multiple copies your board?
How do you solve the problem of porting the software?
Giuseppe Menga
-----Messaggio Originale-----
Da: "Bert Weber" <Bert.Weber@gmx.net>
A: <lugnet.robotics.rcx.java@lugnet.com>; <lugnet.robotics.rcx@lugnet.com>;
<lugnet.robotics.rcx.legos@lugnet.com>
Data invio: sabato 17 maggio 2003 14.49
Oggetto: Re: Upgrade RCX?
> In lugnet.robotics.rcx.java, Rand Krakora writes:
> > Has anyone ever tried to upgrade the memory in the RCX? ( External RAM • that
> > is ).
> >
> > What about upgrade the CPU to 60kbyte PROM version? No need to use • expanded
> > mode, then a ton of I/O would be available...
> >
> > Anyone thought about building a RCX replacement ( besides JCX ) that • would
> > fit into the existing RCX package? Something with flash?
> >
> > Would lejos welcome this? Or would it be too much effort to port to • another
> > CPU?
> >
> > Any kind of an open source hardware project like this available?
> >
> > Thanks,
> > Rand
>
> Hi Rand,
>
> I have started an hardware replacement for the RCX. Its based on an 16bit
> µController, an Infineon (Siemens) C164 with 128kb flash, 128kbSRAM and • 64kb
> EEPROM. The controller plus the all memory is on a module from Phytec
> "Dipmodule 164", like a big 40 pin IC. Therefore all the dificult parts • (PCB
> layout ...) are already solved. My PCB contains only the interfaces to the
> outside world. This are a RCX compatible IR tranceiver, I2C Interface, 6
> motor driver, 8 AD inputs (2 of them active RCX compatible), status LEDs • and
> an beeper. No LCD, but can easily attached to the I2C bus.
>
> Bert
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Hi,
the board is still under development, do far I dont have any PCB layout.
All is done on a prototype board and not all comonents tested yet.
A simple port of BrickOS is also not possible, because of the complete
different structure of the µC. I wrote my own OS, also not finished yet.
Bert
In lugnet.robotics.rcx.java, Giuseppe Menga writes:
> I'm using Lego MindStorms for didactical laboratory at Politecnico di
> Torino.
> I'm interested in your project. I have two questions:
> Would it be difficult to reproduce in multiple copies your board?
> How do you solve the problem of porting the software?
> Giuseppe Menga
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