General guidance on a simple RFID project build

[mgiara]

Hello everyone!

I'd like to construct a device which records times using Arduino RFID Raspberry Pi, and whatever else I need to accomplish my mission.

I'd like to place an RFID tag near a sensor
->Placing the tag near the sensor starts a timer
->Removing the tag stops the timer

The time elapsed will be recorded into a spreadsheet or wherever. This is just software and will be worked out later.

I'd like multiple sensors, in different locations.

The idea is, a tag stops at different stations for different durations of time.

The end goal is a table something like this


Is this feasible?
Where should I start?

[BMS Doug]

The first step is to get one reader working on your pi.
This adafruit reader can use i2c, spi or uart ttl to communicate.

Most of these readers need to be close to the pi to operate, if you want to have several of them at some distance apart then you might need to have pi for each one (networked together).


I'm not sure if you are going to be able to monitor for the card being removed with any real accuracy, I guess you can poll the card regularly and monitor for an absence of reply but I think that the normal proceedure is to wait for the card to be presented (so the program just sits waiting for the card and doesn't timeout from that mode).