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2019-08-01 1:56 pm
Hi, I have a degree in drafting and design... back before computers.. and a degree in electronics...back before transistors. Yes I am kinda old. Worked as a draftsman for years and also as an electronics tech with fire alarms, sound systems, phone systems, nurse call systems, access control and security systems. I am new to Arduino but love a challenge. I am hopping to make a access control system using the Arduino on our cabin. Been looking online for information on fingerprint readers, and line loss. I have 3 man doors and want to control them with one Arduino. Questions about the multiple fingerprint readers on one Arduino is one question I have yet to find an answer. Any ideas?
2019-08-01 2:27 pm
@shuma68
Welcome to the forum and I hope to see you active here.
Sounds like a very interesting project, but not having worked with fingerprint scanners before, I'd almost think you would need a separate serial port for each scanner. At least from the very limited knowledge of the devices that I have. Others here on the forum may be experts on these devices and may be able to offer more details.
The Arduino Mega has multiple serial ports so might be the Arduino you need to have to implement more than one reader. But the UNO would handle using one reader so you could start getting familiar with there use.
I think the readers store the data for 'identified' fingerprints locally, so you might have to have each fingerprint you wish to grant access to be 'read' by each reader.
But I could be wrong on all of this, except the Welcome to the Forum!
SteveG