This project enables you to connect an usb ACR122U NFC card scanner to a computer and access it using Socket.IO.
- 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.
You can install this package from PyPI.
pip install acr122u-websocket
- Connect the ACR122U reader to the computer
- Run the app
python -m acr122u_websocket.app
You can connect to the webserver using Socket.IO. These are the available events:
Start or stop the polling.
start
to start the polling.stop
to stop the polling.
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 neitherstart
norstop
.
Set the status indicator.
confim
to play the confirming status.error
to play the error status.
Reply
no card reader connected
if no card reader is connectedconfirm status set
if the confirm beep and light have been showerror status set
if the error beep and light have been showinvalid message
if the message is neitherconfirm
norerror
Broadcasts when a card has been scanned
{"uuid": [..]}
- An object containing the uuid in the form of a list of integers.
See an example webpage at test.html.
This page is also served on http://localhost:8080/test
.