acr122u-websocket

ACR122U Websocket

This project enables you to connect an usb ACR122U NFC card scanner to a computer and access it using Socket.IO.

Features

• Read UUID from nfc cards and send them over Socket.IO.
• Websocket messages to start and stop the polling for cards.
• Websocket messages to give a confirmation or error beep and light signal.
• Automatically reconnect to the reader when interrupted.

Installation

You can install this package from PyPI.

pip install acr122u-websocket

Usage

1. Connect the ACR122U reader to the computer
2. Run the app

   python -m acr122u_websocket.app
   

API

You can connect to the webserver using Socket.IO. These are the available events:

polling

Start or stop the polling.

Request

• start to start the polling.
• stop to stop the polling.

Reply

• no card reader connected if no card reader is connected.
• polling started if the polling has (already) started.
• polling stopped if the polling has (already) stopped.
• invalid message if the message is neither start nor stop.

status indicator

Set the status indicator.

Request

• confim to play the confirming status.
• error to play the error status.

Reply

• no card reader connected if no card reader is connected
• confirm status set if the confirm beep and light have been show
• error status set if the error beep and light have been show
• invalid message if the message is neither confirm nor error

card scanned

Broadcasts when a card has been scanned

Broadcast

• {"uuid": [..]} - An object containing the uuid in the form of a list of integers.

Example

See an example webpage at test.html.

This page is also served on http://localhost:8080/test.