oliverwehrens / nfc-mqtt

Publish NFC ids to your MQTT Broker.

Simple NFC to MQTT Service

This connects a NFC Reader (like ACR122U-A9) to MQTT. It will publish the UID to the MQTT Server.

This is a result of a rainy sunday afternoon hack.

Requirements

You need to have libnfc installed on your system. I used a Raspberry Pi with Raspbian Minimal.

I followed https://oneguyoneblog.com/2015/09/16/acr122u-nfc-usb-reader-raspberry-pi/

sudo apt-get update -y
sudo apt-get -y install subversion autoconf debhelper flex libusb-dev libpcsclite-dev libpcsclite1 libccid pcscd pcsc-tools libpcsc-perl libusb-1.0-0-dev libtool libssl-dev cmake checkinstall
sudo apt-get -y install python3 pip3
git clone https://github.com/nfc-tools/libnfc.git
cd nfclib
autoreconf -vis
./configure -prefix=/usr -sysconfdir=/etc --with-drivers=acr122_usb
make
sudo make install
vi  /etc/modprobe.d/blacklist.conf

added to that file:

blacklist pn533
blacklist nfc

Next:

sudo udevadm control -R
reboot

Furthermore it requires the python-libs mentioned in requirements.txt.

pip install -r requirements.txt

Things which you want to configure:

• MQTT Server in nfc2mqtt_service.py
• You can also edit the MQTT topic

Yes, this could go into a configuration file.

Install & Run

After configuration run ./install.sh to copy the systemd file in it's place and enable and start the service. The nfc2mqtt_service.py will be copied to /usr/local/bin.

FAQ

Is this work in progress?

Yes, it is.

Does it work?

It works for me ;-). PRs are welcome.

How do I remove it?

sudo systemctl stop nfc2mqtt.service
sudo systemctl disable nfc2mqtt.service
sudo rm /etc/systemd/system/nfc2mqtt.service
rm /usr/local/bin/nfc2mqtt_service.py