EngineersGarage

  • Engineers Garage Main Site
  • Visit our active EE Forums
    • EDABoard.com
    • Electro-Tech-Online
  • Projects & Tutorials
    • Circuits
    • Electronic Projects
    • Tutorials
    • Components
  • Digi-Key Store
    • Cables, Wires
    • Connectors, Interconnect
    • Discrete
    • Electromechanical
    • Embedded Computers
    • Enclosures, Hardware, Office
    • Integrated Circuits (ICs)
    • Isolators
    • LED/Optoelectronics
    • Passive
    • Power, Circuit Protection
    • Programmers
    • RF, Wireless
    • Semiconductors
    • Sensors, Transducers
    • Test Products
    • Tools
  • Advertise
You are here: Home / Replies / Hi Saurav, The above circuit

Hi Saurav, The above circuit

|

Microcontroller › AVR › Finger Print Module interfacing with AVR › Hi Saurav, The above circuit

June 17, 2012 at 8:06 am #8063
Amrith
Participant

Hi Saurav,

 

The above circuit explains the functionaliy of access control & time attendence using fingerprint module. What exactly is your end application? If you want only finger print module to interface to microcontroller, then there is no need of MAX232. In the above circuit MAX232 is used to display the information on PC & LM358 is an comparator and it is not recommended unsless you need it in your application. Kindly explain your actual application & share further doubts.

RSS Recent Posts

  • Parts required for a personal project June 15, 2025
  • Curved lines in PCB design June 15, 2025
  • Wideband matching an electrically short bowtie antenna; 50 ohm, 434 MHz June 15, 2025
  • using a RTC in SF basic June 15, 2025
  • PIC KIT 3 not able to program dsPIC June 15, 2025

Stay Up To Date

Newsletter Signup
EngineersGarage

Copyright © 2025 WTWH Media LLC. All Rights Reserved. The material on this site may not be reproduced, distributed, transmitted, cached or otherwise used, except with the prior written permission of WTWH Media
Privacy Policy | Advertising | About Us

Search Engineers Garage

  • Engineers Garage Main Site
  • Visit our active EE Forums
    • EDABoard.com
    • Electro-Tech-Online
  • Projects & Tutorials
    • Circuits
    • Electronic Projects
    • Tutorials
    • Components
  • Digi-Key Store
    • Cables, Wires
    • Connectors, Interconnect
    • Discrete
    • Electromechanical
    • Embedded Computers
    • Enclosures, Hardware, Office
    • Integrated Circuits (ICs)
    • Isolators
    • LED/Optoelectronics
    • Passive
    • Power, Circuit Protection
    • Programmers
    • RF, Wireless
    • Semiconductors
    • Sensors, Transducers
    • Test Products
    • Tools
  • Advertise