#Maker
1 articles
Hardware / IoT
Decoding a Bluetooth Label Printer Protocol from btsnoop
My Bluetooth label printer only had a mobile app and no way to connect it to my own system, so I enabled HCI snoop logging on my own phone, peeled away HCI/ACL/L2CAP/RFCOMM one layer at a time with a short Python parser, and compared the results with open-source libraries until I could read the commands and print directly from a script.