Can anyone show me how to build a non-chip ( 
)cable to connect my calc to COM?
Build A Cable
Started by
vanhoa
, May 11 2006 03:30 AM
16 replies to this topic
#1
vanhoa
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Posted 11 May 2006 - 03:30 AM
Can anyone show me how to build a non-chip ( )cable to connect my calc to COM?
#2
R00KIE
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Posted 11 May 2006 - 08:52 AM
Why would you want that? a cable like that only works with the casio software while the cable with chip works with any software. anyway just search the web and you'll find the schematic of the original casio cable 
#3
Andy.Davies
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Posted 11 May 2006 - 10:00 AM
if you look in the important topics subforum, there is an entire thread about it.
here is the schematic anyway:
here is the schematic anyway:
#4
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Posted 11 May 2006 - 11:16 AM
I can not find the MAX232 here Can you tell me where can I take it ( a machine for example )?
#5
Andy.Davies
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Posted 11 May 2006 - 12:11 PM
if you goto www.maxim-ic.com you should be able to sample it for free (thats how i get them
its worth a try
its worth a try
#6
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Posted 12 May 2006 - 06:40 AM
Oh! So much MAX232, what should I chose?
#7
Andy.Davies
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Posted 12 May 2006 - 09:58 AM
i think i use the CPE, but it dosent really matter, there is one however thet dosent require the externam capacitors (C2,C3,C4,C5)
===EDIT===
look in my above post with the schamatic, i have re done it so that it is slightly clearer (well i think it is clearer 
)
===EDIT===
look in my above post with the schamatic, i have re done it so that it is slightly clearer
(well i think it is clearer )
#8
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Posted 12 May 2006 - 12:42 PM
if you want the one without capacitors you should get the max233/233a but they are big my advice is that you use a max232/232a. just make sure you use the correct capacitor values. check the table here for reference
http://www.maxim-ic.....cfm/qv_pk/1798
http://www.maxim-ic.....cfm/qv_pk/1798
#9
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Posted 28 July 2006 - 08:40 AM
It's almost 3 month and now I receive the chip. now i want to know what is the gdn in the imagine?
#10
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Posted 28 July 2006 - 04:49 PM
GND = ground or reference point
just connect it like you see in the picture and it will work
just connect it like you see in the picture and it will work
#11
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Posted 29 July 2006 - 06:22 AM
GND = Ground = d?y mass (d?y ?m) đ?.
#12
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Posted 29 July 2006 - 07:22 AM
And the link #15 and #16
#13
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Posted 29 July 2006 - 08:54 AM
You can probably find the MAX-232 at any well assorted electronics vendor:
http://www.farnell.com
http://www.conrad.com
http://www.elfa.se
to name a few.
Edit: Hmm... conrad doesn't seem to have it. However, elfa has it for sure. However, shipping will perhaps be an unnecessary expense.
http://www.farnell.com
http://www.conrad.com
http://www.elfa.se
to name a few.
Edit: Hmm... conrad doesn't seem to have it. However, elfa has it for sure. However, shipping will perhaps be an unnecessary expense.
#14
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Posted 29 July 2006 - 11:05 AM
Vcc l? cổng nguồn.
Andy.Davies: Please post in english too, for the benifit of everyone who might like to read it
Andy.Davies: Please post in english too, for the benifit of everyone who might like to read it
Edited by Andy.Davies, 03 August 2006 - 10:30 AM.
#15
Andy.Davies
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Posted 02 August 2006 - 03:32 PM
if you got www.maxim-ic.com you can sample their chips for free...thats how i get them
#16
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Posted 03 August 2006 - 05:56 AM
Vcc l? cổng nguồn.
Andy.Davies: Please post in english too, for the benifit of everyone who might like to read it
Aargh - Don't be so tight fisted
The Maxim part only costs a few pennies!
#17
Andy.Davies
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Posted 03 August 2006 - 10:29 AM
why spend money when you dont have to?
besides:
Andy = Student = Overpriced Accomadation = No Money = Needs Free Stuff
besides:
Andy = Student = Overpriced Accomadation = No Money = Needs Free Stuff
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