my client has a built system in which id of each fingerprint is transferred to android app using bluetooth module. now he just want to send bitmap image of fingerprint also to app using bluetooth. so you are just required to extract bitmap from character file of r305. r305 saves fingerprint templete in form of character file.
you will have to code using datasheet.
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I have written my own fork of the Adafruit R305 library that allows me to extract BMP images and forward them to a PC easily. A Python script assembles the BMP and saves it. Contact me to discuss details.
Hi i am a engineer. tell me which version of arduino you are using for [login to view URL] can discuss more in chat i can do every task related to arduino i can show you my work