Flashing the Brain: Pi OS and TARS-AI
TARS has a body and senses; now it needs its mind installed. This stage prepares the Raspberry Pi's software: you flash the operating system, switch on the interfaces TARS needs, and install the TARS-AI software that coordinates everything. Every piece of this reuses habits you built in Month 3, flashing an SD card, enabling the camera, working inside a Python virtual environment, so it should feel like familiar ground.
Preparing the operating system
You start exactly as you did in Month 3, flashing Raspberry Pi OS to the SD card with the Imager, choosing the 64-bit version so the Pi 5 can use all its memory, and presetting your Wi-Fi and login so the Pi is reachable on first boot. Once it is running, you enable the two interfaces TARS depends on: the camera, so the Pi can see, and I2C, so the Pi can talk to the PCA9685 servo driver. Enabling I2C here is the very same step that let you reach smart-home devices in Month 4; TARS just uses that connection to command its servos instead.
The display overlay
The small screen that serves as TARS's face usually needs a one-line addition to the Pi's configuration, an overlay that tells the operating system which display it is driving. Without it the screen can stay blank even though the ribbon is seated correctly, so if your face-screen is dark after setup, this is the first thing to check. Adding the overlay is a common step whenever you use a non-standard display, and the TARS-AI documentation tells you exactly which line to add for the screen in your kit.
Installing the TARS-AI software
With the system ready, you install the TARS-AI software itself, which is the code that reads the camera, drives the servos, runs the language model, and handles speech. You install it inside a Python virtual environment, the isolation habit from Month 3, so its dependencies stay contained and do not clash with anything else on the Pi. Bringing down a real open-source project and running it is the same skill you used with the AI libraries in Month 3 and the tool firmware in Month 5; here you are standing on the tested work of the TARS-AI community rather than writing a robot's brain from scratch.
The TARS-AI software is theirs, and their documentation and repository are the definitive, current source for downloading it, the exact install commands, the dependencies, and the display overlay for your screen. Follow their setup guide directly rather than any copied commands, since software instructions change, and their Discord is the place to go if an install step fails:
Software setup docs: docs-tars-ai.vercel.app · GitHub: github.com/TARS-AI-Community/TARS-AI · Discord: discord.gg/AmE2Gv9EUt
The shape of the process is the one you know well by now: flash the OS, enable what you need, clone the project, isolate it in a virtual environment, and open its configuration file. Once the software is installed and its config is in front of you, TARS is one lesson away from thinking and speaking, and that is where you fill in its mind and its voice.