From 6193a2bd487e387f94c65d0a2d3c9f1c108c66f5 Mon Sep 17 00:00:00 2001
From: maxluli <maxluligames@gmail.com>
Date: Sun, 7 Jun 2026 10:33:08 +0200
Subject: [PATCH] Added ReadMe

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+# RP Flight Controller
+
+A custom FPV flight controller built around the Raspberry Pi RP2354B.
+
+This project is a personal hardware design experiment: the idea is to build a modern, digital-only FPV flight controller using a microcontroller family I enjoy working with instead of following the usual STM32-based approach used by most commercial FCs.
+
+It is made with the only intent of havinf fun designing my own FPV hardware to see how hard it is and to get experience with avionics.
+
+## Why this project exists
+
+Most FPV flight controllers are built around STM32 microcontrollers. They work well, but they are also very standardized.
+
+I wanted to explore a different approach using the Raspberry Pi RP2354B, a modern microcontroller with a lot of IO, onboard flash, PIO peripherals, good documentation, and a development ecosystem I already enjoy.
+
+Betaflight has started adding support for RP2350-class microcontrollers, which makes this project especially interesting: it becomes possible to imagine a serious RP-based flight controller rather than just a simple development board or proof of concept.
+
+## Design goals
+
+The goal is not just to make a minimal board that boots.
+
+The goal is to design something that looks and feels like a real FPV flight controller:
+
+- Digital FPV focused
+- Compatible with standard 4-in-1 ESCs
+- Designed around Betaflight
+- Onboard IMU and barometer
+- SD-card Blackbox logging
+- USB-C for configuration and programming
+- Multiple UARTs for receiver, GPS, digital VTX, and expansion
+- External I2C for GPS/compass modules or sensors
+- Buzzer, LED, PWM, ADC, and spare IO pads
+- Clean power architecture with 5 V, 10 V, and 3.3 V rails
+- Debug access for development and board bring-up
+
+The board is intended to be practical, but the main purpose of the project is learning, design exploration, and demonstrating embedded hardware design skills.
+
+## Main features
+
+Planned hardware features include:
+
+- Raspberry Pi RP2354B microcontroller
+- Onboard flash through the RP2354 package
+- BMI270 IMU
+- BMP581 barometer
+- microSD card slot for Blackbox logging
+- USB-C connector
+- Battery-side 5 V and 10 V regulators
+- 3.3 V logic rail
+- USB or battery-powered 5 V logic rail
+- Digital VTX connector
+- GPS connector
+- ESC connector for a standard 4-in-1 ESC
+- SWD debug connector
+- Buzzer output
+- LED output
+- Spare UART, PWM, ADC, I2C, and GPIO pads
+
+## Digital-only FPV design
+
+This flight controller is designed for modern digital FPV systems.
+
+Because of that, it does not include analog video circuitry, an analog OSD chip, or analog camera routing. OSD support is expected to be handled through the digital VTX using a UART connection.
+
+This keeps the board more focused and avoids adding legacy video circuitry that I do not personally plan to use.
+
+## Repository structure
+
+The repository is organized around the KiCad hardware project and the written documentation.
+
+```text
+.
+├── README.md
+├── .gitignore
+├── Poundering.typ
+└── RP_FC
+    ├── RP_FC.kicad_pro
+    ├── RP_FC.kicad_sch
+    ├── RP_FC.kicad_pcb
+    └── RP_FC.kicad_prl
+```
+## Current status
+
+This project is still in development.
+
+The schematic and PCB are not final, and the board has not yet been fully validated. The design may change as parts are selected, routed, reviewed, and eventually tested.
+
+At this stage, this repository should be viewed as a design-in-progress rather than a finished flight controller ready for production or flight.
+
+## Disclaimer
+
+This is an experimental hardware project.
+
+It is not a certified or production-ready flight controller. Anyone using this design is responsible for reviewing, testing, and validating the hardware before connecting batteries, ESCs, motors, or propellers.
+
+Never test motors with propellers installed during early bring-up.
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