Fingerprint sensor for Microcontroller
Fri Feb 01 2008, 10:30 am
AT77C102B has parallel interface so as u said u can use any controller at the cost of extra pins...
MBF-200 has all thesse interfaces...
(1) USB 1.1 for integration into computer applications.
(2) 8-bit parallel MCU interface
(3) SPI interface, a serial interface with 6 wires.
the problem is it captures images...... and authenticate s them all by itself... no embedded programming required...
so boring!!!!!
plus it wud be little expensive.
MBF-200 has all thesse interfaces...
(1) USB 1.1 for integration into computer applications.
(2) 8-bit parallel MCU interface
(3) SPI interface, a serial interface with 6 wires.
the problem is it captures images...... and authenticate s them all by itself... no embedded programming required...
so boring!!!!!
plus it wud be little expensive.
Fri Feb 01 2008, 11:09 am
the problem is it captures images...... and authenticate s them all by itself... no embedded programming required...
so boring!!!!!shyam
some people look for this..
Fri Feb 01 2008, 11:29 am
Thanks for your suggestions.
As AT77C102B has parallel interface, I think I can Directly Interface It with PC Through USB or Parallel port. It is also given in datasheets.
But If I want to make Embedded application and If I want to monitor Fingerprint In PC and and save to compare it next time,Then How can I make Use of MicrocontrollerAT89S52 or AT89S8252?
Can you explain me the flow of data?..
And What do you mean by using a controller at the cost of extra pins?.
So what are the modifications I need to do with Microcontroller?..
Thank you...
vmax
As AT77C102B has parallel interface, I think I can Directly Interface It with PC Through USB or Parallel port. It is also given in datasheets.
But If I want to make Embedded application and If I want to monitor Fingerprint In PC and and save to compare it next time,Then How can I make Use of MicrocontrollerAT89S52 or AT89S8252?
Can you explain me the flow of data?..
And What do you mean by using a controller at the cost of extra pins?.
So what are the modifications I need to do with Microcontroller?..
Thank you...
vmax
Fri Feb 01 2008, 01:30 pm
u will neeed less pin to interface with SPI as obvious so
when u r using with uC u will get a block of data all hex .. first u will have to save that data coorresponding to a picture(gray scale fingerprint) in RAM then to some eeprom or flash and then compare each byte with already stored image..
"at the cost of extra pins"
when u r using with uC u will get a block of data all hex .. first u will have to save that data coorresponding to a picture(gray scale fingerprint) in RAM then to some eeprom or flash and then compare each byte with already stored image..
Sat Feb 02 2008, 09:04 am
AT77C102B gives 8-bit Fingerprint Image.
So, What will be the Size Of the Fingerprint Image?
What is size require for eeprom and RAM For storing the single Image ?
Can you provide me some link where I can Find the use of this sensor with SPI interface?
Thank you.............
vmax
So, What will be the Size Of the Fingerprint Image?
What is size require for eeprom and RAM For storing the single Image ?
Can you provide me some link where I can Find the use of this sensor with SPI interface?
Thank you.............
vmax
Sat Feb 02 2008, 03:46 pm
Can you provide me some link where I can Find the use of this sensor with SPI interface?
vmaxvmax
if you wnant spoi interface.. go for AT77C104B
download application notes from atmel i already posted a link
http://www.atmel.com/dyn/resources/prod_documents/doc5380.pdf
here is one very useful link
http://www.analog.com/UploadedFiles/Application_Notes/112974217EE.325.Rev.1.08.2007.pdf
[ Edited Sat Feb 02 2008, 04:00 pm ]
Tue Apr 01 2008, 09:12 pm
Hello Everyone,
I have been searching for weeks, but have been unable to locate an Atmel AT77C104 sensor or any other sensor for that matter. I am doing a project similar to the one described above, but can't even get started because of this problem locating a sensor. Can ANYONE please help with contact info for a vendor??
Thanks in advance!
I have been searching for weeks, but have been unable to locate an Atmel AT77C104 sensor or any other sensor for that matter. I am doing a project similar to the one described above, but can't even get started because of this problem locating a sensor. Can ANYONE please help with contact info for a vendor??
Thanks in advance!
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