Imported from GitHub: alaotach/rc-car · commit a91d884

Description

Quixie - RC Delivery Car

README

Quixie - RC Delivery Car

Quixie is a small autonomous RC delivery car. The custom PCB handles motor control and sensor expansion; the firmware manages navigation, telemetry, and the locking cargo bay.

Built by AlAoTach for Fallout

---

Why I Built This

I wanted to steal chips from my nephew.

---

Key Features

• Servo locked cargo bay - lid opens and closes automatically via servo motor
• Live camera feed - ESP32 cam stream on dashboard
• GPS navigation - Neo6M position tracking
• Obstacle avoidance - 3× ultrasonic sensors
• OLED display - SSD1306 1.3"

---

Tech Specs

Components MCU - ESP32 S3 Mini Motors - DC Geared, 12V Driver - BTN7960B (43A) GPS - Neo6M IMU - BMI270 Sensors - Ultrasonic ×3 Camera - ESP32 CAM Display - SSD1306 OLED (1.11") Battery - 3S Li-ion (11.1V)

---

System Overview

---

What's in This Repo

quixie/
├── pcb/                          # KiCad project
│   ├── rc-car.kicad_pcb          # PCB layout
│   ├── rc-car.kicad_sch          # Schematic
│   ├── rc-car.kicad_pro          # Project file
│   ├── rc-car-BOM.csv            # Bill of materials
│   └── fabrication/              # Gerbers + drill files
├── firmware/
│   └── rc-car/
│       ├── include/              # Header files + Config.h
│       └── src/                  # Source files
├── fabrication/
│   └── 3d/
│       ├── rc-car-case.f3d       # Fusion 360 CAD source
│       ├── rc-car-case.stl       # 3D printable case
│       └── pcb-model.stl         # 3D PCB model
└── docs/assets/                  # Images and media

---

PCB

Front and back of the custom PCB:

---

3D Case

The case is 3D printable in PLA.

Open cargo bay

---

Schematic

Main schema

Motor schema

Ultrasonic and TOF

Servo lock

Voltage divider

Battery and charging

---

Build Guide

Step 1 - Export Gerbers

Open pcb/rc-car.kicad_pcb in KiCad. Generate Gerbers and drill files into pcb/fabrication/. Zip all outputs.

Step 2 - Order the PCB

Upload your Gerber zip to JLCPCB or your preferred fab.

Step 3 - Solder & Populate

Solder the required components ( hope you have gotten SMD from jlcpcb )

Step 4 - Flash Firmware

cd firmware/rc-car
pio run --target upload

Requires PlatformIO. Main config is in firmware/rc-car/include/Config.h.

Step 5 - 3D Print the Case

• Material: PLA
• File: fabrication/3d/rc-car-case.stl

Step 6 - Final Assembly

Mount the PCB in the case, wire motors and power, connect sensors. The servo for the lid attaches at the rear hinge point.

---

Modifying the Firmware

All config parameters live in:

firmware/rc-car/include/Config.h

Features are split into modules under firmware/rc-car/src/.

---

License

Open source. Do what you want, just don't use it to steal chips from my nephew cough cough.