How to Scan Fingerprints with Arduino!
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- Опубліковано 29 лют 2024
- In this video I show you step by step how to wire up an optical fingerprint scanner compatible with Arduino and Raspberry Pi devices that communicates over UART.
We cover the wiring, sensing and programming all in less than 20 minutes!
The module I use in this video: www.dfrobot.com/product-1343....
Or a similar option available from amazon: amzn.to/42X8NIb
The code is available here: github.com/plemaster01/Arduin...
Don't forget to leave a like on the video, subscribe to the channel, let me know what you want to see next in the comments, and consider checking out my patreon to help me build bigger and better projects in the future!
/ lemastertech - Наука та технологія
Your great enthusiasm and clarity make your explanations so easy to follow. I just found your channel, and it will be very helpful as I learn to code via Arduino IDE. Learning to interface with various hardware, sensors, breadboard circuits, microprocessors etc. Great video!
Thank you so much for watching and for the super nice comment I’m glad to have you here!!
thanks for this video man, I recently stumbled across your channel and It has been really helpful with my journey towards programming! Have a great day
Hey thanks for saying that Mr Keep Cool!! That’s exactly why I started the channel and it’s super cool to hear it’s been helpful :) feel free to drop a comment if there’s ever something you’re confused about or want to see more of, and welcome to LeMaster Tech 😎😎
yea I sure will, keep posting videos I love them!@@lemastertech
hey man..for me the serial monitor showsDid not find Fingerprint Sensor but again the fingerprint led only light up the time i coonect the circuits and then turns off..like the turns on ehen i connect but again goes off..no idea why it happens
Hi man that’s really odd, is it the same exact model or at least a model that supports UART comms? I know that some manufacturers libraries aren’t compatible with others so if you aren’t using a DFRobot model or very similar model you might need to check for documentation on setup for that specific one! If you are using the same one then double check all your wiring but there is a chance it’s a bad sensor 😬
Don't have that sensor but might get one some day to keep some people from getting my ice cream😉
Hahah to stop people from getting your ice cream might be the best reason I’ve ever heard for someone wanting to get biometric security in place 😁😂😂
Hey, when I attempt to upload my code, the serial monitor displays "Did not find Fingerprint Sensor :(" although I'm pretty sure I followed your steps to a tea. Any idea why that might be?
Hi, are you using the exact same fingerprint module as me, or another UART compatible one? Or are you using a different type by chance? Does your sensor light up or indicate that it is at least powered on correctly in any way??
Whoop or fitbit... please explain yoiur review that was left on Amazon?
Hahah Fitbit all the way! Whoop is too expensive, complicated to use, the software subscription based model is dumb and there is no display on it at all. Fitbit’s tell you the majority of the same data, have a nice visual interface, are cheaper, and support is better!
hey, I am using the R503 capacitive fingerprint sensor with an arduino atmega 2500. I have my power and ground going to the 5v and gnd on the arduino, respectively. my pinout is as follows :
1 Power Supply DC3.3V
2 GND Signal ground. Connected to power ground.
3 TXD Data output. TTL logical level
4 RXD Data input. TTL logical level
5 WAKEUP Finger Detection Signal
6 3.3VT Touch induction power supply,
I am not using 5 and 6. i have the tx connected to pin 2 on the arduino and rx connected to pin 3. i have tried swapping these and swapping between 3.3v and 5v to no avail. I keep getting the log "fingerprint sensor not found :( " and when i remove the if statement for the password checking portion in setup, i get it to load, i enter the id, and i get a communication error.
Any idea what i am doing wrong? I am using the example code that you grabbed from adafruit.
also, i am not getting any power indication when it starts up, which i am not sure why. i had the power and ground soldered to the plugin connector wires for arduino, then i clipped them again, and just twisted them together. neither way gives any indication of power. the R503 sensor is warm to the touch though after being plugged in for a bit
Hi I can’t say I have specifically used that module but the fact it gets warm to the touch but doesn’t give any indication it’s been powered on means maybe the module is bad or has internal crossed wires, but most likely you’ll just need to double check with the sensor manufacturer and see if they’ve run into this before!
@@lemastertech Thanks for the reply. I am just chalking it up to the module being bad at this point. it was a cheap one from overseas, I should have ordered spares. This was supposed to help enhance my biometrics presentation this Friday, but I guess I will just discuss my failure instead haha!
Did not find fingerprint sensor :( WHYYY??
Oh man I’m sorry to hear that! Is it powering on and lighting up and the arduino can’t find it or not even powering up??
hey may i know whats your ide name ?
Hi! I do arduino programming with the arduino ide! It’s free from their website, and I do python programming in pycharm which is also free from jetbrains 😎