add support for RDM6300 125KHz RFID reader

[arduino12]

I also wrote a simple library to interface with the RDM6300 RFID reader:
https://github.com/arduino12/rdm6300

[arduino12]

I fixed a bug in the rdm6300 lib (new version is 1.0.1),
Apparently platformio takes 24 hours to pull it...
So I'll re-open the PR tomorrow...

[omersiar]

Actually, you can even set the revision on platformio ini of a git repository. Platformio Library manager is just a json crawler. No need to wait. Anyway i will review your PR, thank you.

[omersiar]

Perfectly clear, amazing, thank you.

[omersiar]

Thank you, this is great.

[arduino12]

You're welcome,
You have done an amazing job here- great project!

Before I connect two of these to my lab's doors,
I'll add support for the MPR121 Capacitive Touch Keypad:
https://www.ebay.com/itm/263944297372
So I can still enter even without the RFID tag, so stay tuned for another PR :)..

PS:
Your ESP8266-RFID-PCB looks great..!

[omersiar]

Thanks to @nardev the board is really good, is this keypad works on spi bus? Also there are wiegand readers that also have keypad built in i think that will be more looking good on your lab's door.

[arduino12]

This keypad is based on MPR121 - I2C interface capacitive touch sensor,
I have worked with those sensors in my previous project and was very impressed by them,
It is better than mechanical keyboards- can work under perspect or glass and feel like "hi-tech" lab..