> For the complete documentation index, see [llms.txt](https://werkhause.gitbook.io/firmware-uploader-terminal/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://werkhause.gitbook.io/firmware-uploader-terminal/system-pre-requisites/3.-thermal-printer-hw-prep.md).

# 3. Thermal Printer HW prep

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So the thermal printer is talking to the PI (for my proposed programming hardware computer) via USEB serial FTDI chip FT232RQ. 

*\[Picture of the thermal printer FTDI chip] \[TBD]*