More RAM memory
Archiver
Posts: 46,084
Bob-
If you've got a '2p model, the Dallas Semi DS1996 64Kbit nonvolatile
memory iButton may be worth a look. See:
https://shop.maxim-ic.com/cgi-bin/Maxim.storefront/622089042/Product/V
iew/DS1996L&2DF5
Regards,
Steve
On 29 Dec 03 at 8:44, Bob Roan wrote:
> I need about 2 - 4K of RAM memory...
If you've got a '2p model, the Dallas Semi DS1996 64Kbit nonvolatile
memory iButton may be worth a look. See:
https://shop.maxim-ic.com/cgi-bin/Maxim.storefront/622089042/Product/V
iew/DS1996L&2DF5
Regards,
Steve
On 29 Dec 03 at 8:44, Bob Roan wrote:
> I need about 2 - 4K of RAM memory...
Comments
because I need to read and write every second and the life of EEPROM
would get used up pretty quickly.
Any ideas for where I can find RAM for the stamp?
Thanks
bob
Cubed makes a module called the RamPack:
http://www.solutionscubed.com/Solutions%20Cubed/RPB2003.htm
-- Jon Williams
-- Applications Engineer, Parallax
-- Dallas Office
Original Message
From: Bob Roan [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=m8eg6gF-4AX4yfnWOYSOBbqYEtjbjwyK7h8SDehE18DME4bYUk7-Tx84EY3h1BVQ7F56qJE3WCSg]bob@t...[/url
Sent: Monday, December 29, 2003 10:45 AM
To: basicstamps@yahoogroups.com
Subject: [noparse][[/noparse]basicstamps] More RAM memory
I need about 2 - 4K of RAM memory. I don't think EEPROM will work
because I need to read and write every second and the life of EEPROM
would get used up pretty quickly.
Any ideas for where I can find RAM for the stamp?
Thanks
bob
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abuse@p....
Is it serial info you wanna store?
If you use the BS2p, you have 126 bytes storeage, that don't wear
out. Simply:
SERIN 7, 16884, 4000, No_GPS_Data, [noparse][[/noparse]WAIT("????,"), SPSTR 125]
This line wait for some interesting char like ????, then store the
next 126 bytes in the SP RAM.
Then use a for next to read one char at the time:
For adr=0 to 125 ' total 126
Get adr,Keyin ' get one char
If Keyin somthing.....
Next
--- In basicstamps@yahoogroups.com, "Jon Williams" <jwilliams@p...>
wrote:
> If you're looking to save time and development headaches, Solutions
> Cubed makes a module called the RamPack:
>
> http://www.solutionscubed.com/Solutions%20Cubed/RPB2003.htm
>
> -- Jon Williams
> -- Applications Engineer, Parallax
> -- Dallas Office
>
>
>
Original Message
> From: Bob Roan [noparse][[/noparse]mailto:bob@t...]
> Sent: Monday, December 29, 2003 10:45 AM
> To: basicstamps@yahoogroups.com
> Subject: [noparse][[/noparse]basicstamps] More RAM memory
>
>
> I need about 2 - 4K of RAM memory. I don't think EEPROM will work
> because I need to read and write every second and the life of
EEPROM
> would get used up pretty quickly.
>
> Any ideas for where I can find RAM for the stamp?
>
> Thanks
>
> bob
>
>
>
> To UNSUBSCRIBE, just send mail to:
> basicstamps-unsubscribe@yahoogroups.com
> from the same email address that you subscribed. Text in the
Subject
> and Body of the message will be ignored.
>
>
> Yahoo! Groups Links
>
> To visit your group on the web, go to:
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>
> To unsubscribe from this group, send an email to:
> basicstamps-unsubscribe@yahoogroups.com
>
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>
> This message has been scanned by WebShield. Please report SPAM to
> abuse@p...
that are about 2 inches square. I currently have a grid that contains 3
rows by 3 columns of them, which totals about 576 individual LEDs that
need to be updated each second. At one bit each, I use about 72 bytes.
I have enough memory with the BS2SX and the DS1302 clock ship RAM
together. But I want to move to 5 by 5, which brings me up to 1600
LEDs, which at one bit each needs about 200 bytes. So I multiplied my
estimate by 10 to give me a little wiggle room. Even with no wiggle
room, the BS2P doesn't have enough
bob
Original Message
From:
patterns, you can store those patterns in DATA statements (you can even use a
spare program slot in the BS2p and point to it with the STORE instruction) and
point to them as needed to refresh each display digit. Take a look at this
article (I'm getting my money's worth for all those N&V articles that Scott and
Lon and I have written....):
http://www.parallax.com/dl/docs/cols/nv/vol2/col/70.pdf
-- Jon Williams
-- Applications Engineer, Parallax
-- Dallas Office
Original Message
From: Bob Roan [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=x-MXDDg4fttRbPpMOk5Y289P5teh7vIzeEYnlT2HcK7a8ew5J4T9ThoLwskE_TnKwOc8FxOJ1g]bob@t...[/url
Sent: Monday, December 29, 2003 2:09 PM
To: basicstamps@yahoogroups.com
Subject: RE: [noparse][[/noparse]basicstamps] Re: More RAM memory
I am simulating a clock using LEDs. I have some 8 by 8 LED Matrices that are
about 2 inches square. I currently have a grid that contains 3 rows by 3
columns of them, which totals about 576 individual LEDs that need to be updated
each second. At one bit each, I use about 72 bytes. I have enough memory with
the BS2SX and the DS1302 clock ship RAM together. But I want to move to 5 by 5,
which brings me up to 1600 LEDs, which at one bit each needs about 200 bytes.
So I multiplied my estimate by 10 to give me a little wiggle room. Even with no
wiggle room, the BS2P doesn't have enough
bob
Original Message
From:
an analog one, so each second it has to figure out which LEDs to light
to make it look like a sweeping second, minute and hour hand.
bob
Original Message
From: Jon Williams [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=mAlT7pEYhTOKhlQm7xgqc_Gi8wec6WXsWdCIxkuuC4-3jrC0yxGpLtcyMiu3dm5n5F5Vw8SmyzWzqqYSOA]jwilliams@p...[/url
Sent: Monday, December 29, 2003 12:23 PM
To: basicstamps@yahoogroups.com
Subject: RE: [noparse][[/noparse]basicstamps] Re: More RAM memory
You don't need to do this in RAM. Since your numbers and/or letters
have known patterns, you can store those patterns in DATA statements
(you can even use a spare program slot in the BS2p and point to it with
the STORE instruction) and point to them as needed to refresh each
display digit. Take a look at this article (I'm getting my money's
worth for all those N&V articles that Scott and Lon and I have
written....):
http://www.parallax.com/dl/docs/cols/nv/vol2/col/70.pdf
-- Jon Williams
-- Applications Engineer, Parallax
-- Dallas Office
Original Message
From: Bob Roan [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=WCbcDYIgQTvNFX1wIZbtR6odM9A9WJ3ZylBMjosXzn9nNBBl_Wibs0z0A5uzFGGEFlRBhrEBkfKE9M8]bob@t...[/url
Sent: Monday, December 29, 2003 2:09 PM
To: basicstamps@yahoogroups.com
Subject: RE: [noparse][[/noparse]basicstamps] Re: More RAM memory
I am simulating a clock using LEDs. I have some 8 by 8 LED Matrices
that are about 2 inches square. I currently have a grid that contains 3
rows by 3 columns of them, which totals about 576 individual LEDs that
need to be updated each second. At one bit each, I use about 72 bytes.
I have enough memory with the BS2SX and the DS1302 clock ship RAM
together. But I want to move to 5 by 5, which brings me up to 1600
LEDs, which at one bit each needs about 200 bytes. So I multiplied my
estimate by 10 to give me a little wiggle room. Even with no wiggle
room, the BS2P doesn't have enough
bob
Original Message
From:
32 KBytes of SRAM, interfaced via 9600 baud
SEROUT/SERIN. It also has a 'FIFO' mode, so
you just write bytes to it and it stores them.
--- In basicstamps@yahoogroups.com, "Bob Roan" <bob@t...> wrote:
> I am simulating a clock using LEDs. I have some 8 by 8 LED Matrices
> that are about 2 inches square. I currently have a grid that
contains 3
> rows by 3 columns of them, which totals about 576 individual LEDs
that
> need to be updated each second. At one bit each, I use about 72
bytes.
> I have enough memory with the BS2SX and the DS1302 clock ship RAM
> together. But I want to move to 5 by 5, which brings me up to 1600
> LEDs, which at one bit each needs about 200 bytes. So I multiplied
my
> estimate by 10 to give me a little wiggle room. Even with no wiggle
> room, the BS2P doesn't have enough
>
> bob
>
>
Original Message
> From:
algorithm can be done in all integer math, and is probably reasonable to
implement on the stamp. All you'd have to do at this point would be to
store the x,y positions of the "outside" of the clock (which can actually
be stored in 15 (x,y) pairs, since circles are symmetrical around the
quarter, and use the line drawing algorithm to "line plot" to this
position. This would be a neat little thing to do, but it would be
tricky. It would however scale to an arbitrary sized LED array.
(interesting, just last night I watched 'finding nemo' and noted my
computer graphics professor listed in the credits, today I end up
using said information...)
This might be a worthwhile read:
http://www.cs.unc.edu/~davemc/Class/136/Lecture9/Lines.html
On Mon, 29 Dec 2003, Bob Roan wrote:
> I'm simulating clock hands. It will not look like a digital clock, but
> an analog one, so each second it has to figure out which LEDs to light
> to make it look like a sweeping second, minute and hour hand.
>
> bob
>
>
>
>
Original Message
> From: Jon Williams [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=yAyJOtHckfwSzKSDFB56Bz0zC4IdDUUZA7h_1KA7ce3WuIxHTkgpoe7Co5cJDkjuCwqwB23eNaGodbIc-ouXgg]jwilliams@p...[/url
> Sent: Monday, December 29, 2003 12:23 PM
> To: basicstamps@yahoogroups.com
> Subject: RE: [noparse][[/noparse]basicstamps] Re: More RAM memory
>
>
> You don't need to do this in RAM. Since your numbers and/or letters
> have known patterns, you can store those patterns in DATA statements
> (you can even use a spare program slot in the BS2p and point to it with
> the STORE instruction) and point to them as needed to refresh each
> display digit. Take a look at this article (I'm getting my money's
> worth for all those N&V articles that Scott and Lon and I have
> written....):
>
> http://www.parallax.com/dl/docs/cols/nv/vol2/col/70.pdf
>
> -- Jon Williams
> -- Applications Engineer, Parallax
> -- Dallas Office
>
>
>
>
Original Message
> From: Bob Roan [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=C3TOSCEkkn8-XldrV2iEAYCaSszwkFokemu3vYWwryWwIybq8XCDz_MhkPeP2EzId4jlmwKK]bob@t...[/url
> Sent: Monday, December 29, 2003 2:09 PM
> To: basicstamps@yahoogroups.com
> Subject: RE: [noparse][[/noparse]basicstamps] Re: More RAM memory
>
>
> I am simulating a clock using LEDs. I have some 8 by 8 LED Matrices
> that are about 2 inches square. I currently have a grid that contains 3
> rows by 3 columns of them, which totals about 576 individual LEDs that
> need to be updated each second. At one bit each, I use about 72 bytes.
> I have enough memory with the BS2SX and the DS1302 clock ship RAM
> together. But I want to move to 5 by 5, which brings me up to 1600
> LEDs, which at one bit each needs about 200 bytes. So I multiplied my
> estimate by 10 to give me a little wiggle room. Even with no wiggle
> room, the BS2P doesn't have enough
>
> bob
>
>
Original Message
> From: