Need help using Parallax RFID reader
I am having problems with the Parallax RFID reader (with
the 2 inch buttons) using a Stamp2p. The reader will read the
tags but the reading distance is highly inconsistent. I suspect,
the code, the operator, or the test set-up
The Code
enable pin 1
sout pin 0
T2400 con 1021
idx var byte
chkChar var btye
Do
low enable
serin 0, T2400, [noparse][[/noparse]Wait($0A), SPSTR10)]
high enable
For idx = 0 to 9
Get idx, chkChar
Debug chkChar
Next
Debug Cr
Loop
end
the Operator
started with a BS1 in 1994, a BS2 in 1996, been away a looong time
the set-up
The tag is set up vertically leaning against a wood block
and the reader approaches slowly with the faces parallel.
the result: sometimes consistent readings are achieved at 3 inches
sometimes readings are not achieved until less than 1 inch
sometimes the reader has to be waved back and forth for a few minutes
With the setup rotated so that tag and reader are horizontal, the tag
is never read until within one inch of one another.
Using a power supply, the reader is using 5 volts and about 110 ma.
I'd appreciate some suggestions on how to achieve consistent results.
Thanks,
JohnP
the 2 inch buttons) using a Stamp2p. The reader will read the
tags but the reading distance is highly inconsistent. I suspect,
the code, the operator, or the test set-up
The Code
enable pin 1
sout pin 0
T2400 con 1021
idx var byte
chkChar var btye
Do
low enable
serin 0, T2400, [noparse][[/noparse]Wait($0A), SPSTR10)]
high enable
For idx = 0 to 9
Get idx, chkChar
Debug chkChar
Next
Debug Cr
Loop
end
the Operator
started with a BS1 in 1994, a BS2 in 1996, been away a looong time
the set-up
The tag is set up vertically leaning against a wood block
and the reader approaches slowly with the faces parallel.
the result: sometimes consistent readings are achieved at 3 inches
sometimes readings are not achieved until less than 1 inch
sometimes the reader has to be waved back and forth for a few minutes
With the setup rotated so that tag and reader are horizontal, the tag
is never read until within one inch of one another.
Using a power supply, the reader is using 5 volts and about 110 ma.
I'd appreciate some suggestions on how to achieve consistent results.
Thanks,
JohnP
Comments
Dave
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Dave Andreae
Tech Support
dandreae@parallax.com
Http://www.parallax.com
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When i was ·builting my·Garage Door RFID Card Reader i ran into the same problem in that when i put
the reader in to elec box· and you see what i talking at
http://forums.parallax.com/showthread.php?p=571682
sam_sam_sam·Completed Projects > 3.- Electric Lock Controlled by a Bs2 And a RFiD TAG··
At the bottom of the page
When the card reader was not in box the range was about 3" inches but when it was in the box
it was about 2" range· now the reader was mounted as close to case as i could do it
So when you·put reader in a case not only is the range less but you have to hold the card
in front of the reader a while longer so it can read the card
I hope this help you········
Sam···········