- This topic has 22 replies, 15 voices, and was last updated 7 years, 11 months ago by hoangle.
June 19, 2012 at 1:34 pm #1847
I want to interface R303A fingerprint reader module and read a finger print image through it and use it for further authentication purpose. Can anyone help me out with this?
Also, can I use the PC for communicating with R303A?? If yes, then how?June 19, 2012 at 1:45 pm #8082midhunParticipant
S you can connect it with your PC.June 19, 2012 at 6:09 pm #8085
Are you planning to interface R303A finger print module to contoller ?? You can interface it to controller through UART pins.
You can interface R303A to PC through serial communication, use max232 IC in between R303A & PC serial com port.June 19, 2012 at 7:43 pm #8090
yes thank you Amrith, but I wanted to know the procedure of reading the fingerprint through R303A and communication protocols, serial data sent and received for this specific purpose. A code would be appreciated: C#(with PC) and AVR(with MCU)
Someone please help.June 20, 2012 at 2:12 am #8094
I have gone through R303A data sheet, it clearly explains the commands & procedures to communicate with it. Kindly refer datasheet, if you find further difficulties, please post your further queries.August 22, 2012 at 4:03 am #8496ashaParticipant
I am using 303a Fingerprint module to communicate with the controller using c code. But i am finding difficulty to store the charecter file. Can you please help me?August 22, 2012 at 6:52 am #8497
Actually thanks everyone for the help but I have accopmplished what I wanted to do with my fingerprint module and finished my project 2 months ago. And someone has asked that how to generate and sore a char file, the procedure is right below:
1. You have to read a fnger image by using the byte stream : 0xEF, 0x01, 0xFF, 0xFF, 0xFF, 0xFF, 0x01, 0x00, 0x03, 0x01, 0x00, 0x05
2. then after getting a success acknowledge you have to generate char file and store it in charbuff1 available in the module itself with a data packet mentioned in the R303A manual
3. then again read the finger image(always remember that a fingermust be on the reader otherwise the module will return a negative acknowlwdge) and again generate a charfile and store in the charbuff2
4. now using the charfiles stored in charbuff1&2 you can create a template file(reduced fingerprint image) (Refer manual) which will be stored back in the character buffers back again
then there is a command that is used to save the template file in the fingerprint library(flash memory available in the module) (very large)
There is also a command to search for finger template(acquired by the same procedure steps 1, 2, 3) which requires starting and end page addr of the search as parametes and returns a pageID(at which the matching template is present) in the acknowedge message.
Hopw this helps !!August 23, 2012 at 4:25 am #8499
Good Lalit.. hope you share your project on Engineer garage.. CheersJanuary 23, 2013 at 3:46 pm #9037Sumit dubeyParticipant
i have interface r303a with avr microcontroller…
i am able to scan and and match images with that module but i am facing a serious problem with the function “search”.
as datasheet says that it is used to search in finger library.
Input Parameter: BufferID, StartPage (searching start address), PageNum?searching numbers?
as far as i know we need to provide
1.BufferID (which may be charbuffr1 or charbuffr2).
2.StartPage (In my case its 0x00).
3.PageNum (i m sending 5).
well this works for me initially then after 2 or 3 trails module stops repoding properly…
i need to reset my controller to get it working again. and the things goes like this again and again.
do you have any idea…!!! whts going wrong..January 24, 2013 at 5:48 pm #9048shuchiParticipant
please tell about communication of fingerprint module r303 with pc
if there is any method to convert usb1.1 compatibility into usb 2.0 compatibility of this finger print moduleMarch 1, 2013 at 4:08 am #9209shruthiParticipant
can someone plz help me..iam doing similar project and my problem is with r303a fp module…. when i send a frame format like lalit said where do i chk for the acknowledgment?March 3, 2013 at 4:42 pm #9227ShruthiParticipantI need to interface r303a finger print module via max232 to the pc.The max232 has been connected to pc thru a usb adapter.When the module is connected its not turning on.Dont know what is the error.For the finger print module to work should the max232 b given a external power supply or is the pc power enough??April 10, 2013 at 7:43 am #9452Amit MishraParticipant
I am using r303a fingerprint module for biometric voting.
But, when I connect the module with the pc , and try to open the device, I get the following message:-
” Open Device Fail, please check the device address and passward”.
I also tried to communicate with the device using ” advanced serial port terminal” and when I give the instruction to read system parameters, I receive”f f f f f f f f”.
Please help me out as I am stuck in this problem.
Thanks in advance:-
Amit Mishra.April 21, 2013 at 10:53 am #9554Naman SrivastavaParticipant
Hi guys.. i am working on a fingerprint based electronic voting machine for which i am using r303A as the fingerprint scanner module. but being new to this device i dont even know how to start. if someone could provide me some steps or information on how to use the device, it would be of great help. i have already gone through its manual and till now i have just made physical connections to tx, rx, vcc and grnd pins of the device through a max 232 to pc. i dont know if the device is connected properly or working or not. so please provide me some procedure to check the same also how to perform a particular function on the device as mentioned in the manual. using commands like VfyPwd, SetPwd etc.
Thank you.January 31, 2014 at 5:37 am #10916DayanandaParticipant
please help me ,,
i am following correct procedure……., what u guied but could not able to talk with finger print.
please give me the c code.
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