Maneesh Godbole wrote:... Anyone else into IoT? Please do share your experiences here.
I'm just starting a new project with my son - an RFID/NFC keyed access controller for our electric garage door. The key components are a
MFRC522 based RFID receiver, a
ESP8266 based microcontroller, and a GPIO driven relay board.
The microcontroller is used in a lot of IoT products, and can be bought for between $2 and $5 USD depending on if you just want the bare module, or you want it mounted on a PCB with the required external components. It has a programmable Tensilica 32bit ucontroller, a WiFi radio which supports WiFi Direct, an embedded TCP/IP stack, and a number of GPIO lines. More information on the
ESP8266 Community Forum.
For the RFID tags, we will initially use a credit card size which fits in a wallet, and a fob-style to go on a key ring. Later, I am going to look at how to use the NFC capabilities from Android handsets.
We plan having a client/server architecture, where the decision making to allow/deny opening/closing the door is done on a backend server, based on the tag id and time of day, and have the option of sending out an email or SMS alert each time an attempt is made to open/close the door, or when the door has been left open for too long.