README

The Python script convert.py can be used to convert infrared serial interface commands (in hexadecimal representation) into a Flipper Zero^[1] compatible infrared^[2] .ir file.

Use case: It can be used to convert LEGO MINDSTORMS RCX^[3] (the "yellow programmable brick") infrared commands^[4] (see LEGO_RCX.json input file).

The script supports sending multiple multibyte messages at once and adds wait times for message replies by default.

References

[1] Flipper Zero — Portable Multi-tool Device for Geeks

[2] Flipper Zero Blog — Taking over TVs with Flipper Zero Infrared Port

[3] Disclaimer: LEGO and MINDSTORMS are trademarks and copyrights of the LEGO Group of companies which does not sponsor, authorize or endorse this site.

[4] RCX 2.0 Firmware Command Overview / LASM bytecode specification

Dependencies

A Python 3 environment is required.

The script only imports sys and json and therefore shouldn't require any additional packages.

Converter usage

Run converter and print output on stdout:

$ python convert.py LEGO_RCX.json

Run converter and pipe output to IR output file:

$ python convert.py LEGO_RCX.json > LEGO_RCX.ir

Run converter and pipe output to both an IR output file and stdout:

$ python convert.py LEGO_RCX.json | tee LEGO_RCX.ir

For the format of the .json file, inspect LEGO_RCX.json example.

Plot usage

The IR signal plot script additionally requires the Python module matplotlib.

Usage: python3 plot_signal.py <IR_file_name> <IR_signal_name>

Example:

python plot_signal.py LEGO_RCX.ir ABC_STOP
Trying to open file 'LEGO_RCX.ir' and then to plot signal 'ABC_STOP'
Found signal:
  Raw signal name: ABC_STOP
  Raw signal data: 833 417 417 417 417 ...