Thermal printer automatically prints addresses and vendors of Wi-Fi devices nearby.
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1.0 KiB

Wi-Fi Printer

This project prints all SSIDs, MAC addresses, and their vendors on a thermal printer using a Wi-Fi adaptor in monitor mode.



  1. Setup a Raspberry Pi with Raspbian/Raspberry OS
  2. Connect to Internet
  3. Run
  4. Wait
  5. Set up for further usage, i.e.:
  • Remove Internet connectivity (not needed anymore)
  • Connect printer and Wi-Fi adaptor
  • Include everything into nice device :)


  • You might need to adapt the printer configuration in depending on the printer you use
  • You might need to change the name of the network adaptor in


For a headless install you need to

  • Enable SSH: touch <sd-card>/boot/ssh

  • Configure Wi-Fi: Create file <sd-card>/boot/wpa_supplicant.conf. This repository contains a configuration file for Freifunk.

    country=DE ctrl_interface=DIR=/var/run/wpa_supplicant GROUP=netdev update_config=1

    network={ ssid="NETWORK-NAME" psk="NETWORK-PASSWORD" }