Flipper infinity pcb

Flipper Infinity - Embedded Multi-Protocol Analysis Device

Ongoing — Hardware complete, PCB designed, firmware in active development

A handheld multi-protocol signal analysis device built on a custom ESP32 PCB, integrating NFC/RFID, sub-GHz RF, infrared, and WiFi into a single embedded platform with an on-device touchscreen interface.

Hardware

Custom 2-layer PCB designed in KiCad integrating all modules on a single board with a shared SPI bus, dedicated power rails, and RF-aware layout.

PCB

Designed from scratch in KiCad. Two-layer board with:

• Shared SPI bus (SCK/MOSI/MISO) daisy-chained across TFT, PN532, and CC1101
• Dedicated 1mm VCC and GND power rails
• 100nF decoupling capacitors on all RF modules
• 10µF bulk capacitor on the ESP32 3V3 rail
• Ground pour on both copper layers
• PN532 antenna keepout zone to preserve NFC read range
• CC1101 module positioned at board edge for unobstructed antenna radiation

Pin Mapping

Firmware

Written in C++ using ESP-IDF with FreeRTOS. Each protocol runs as an isolated task, scheduled cooperatively to avoid resource contention across shared buses.

• Multi-protocol scheduling — FreeRTOS tasks isolate NFC, RF, IR, and WiFi logic
• Bus management — SPI peripherals share the ESP32's interface without conflicts via chip select
• Touchscreen UI — LVGL-based interface built with SquareLine Studio for on-device workflow control
• WiFi — promiscuous mode packet capture for raw 802.11 frame analysis

Planned Features

WiFi

Network scanning, packet monitoring, device inventory, deauthentication, file server, MAC spoofing, captive portal, beacon spam

Bluetooth

BLE device scanner, packet sniffer, device logger

NFC

Read, write, emulate, sniff — supports Mifare Classic cards

RFID

Read, write, emulate

IR

Transmit, receive, universal remote, signal replay

RF (CC1101)

Frequency analyzer, listen, decode, replay, transmit

Repository Structure

FlipperInfinity/
├── include/                # Header files to include (.hpp)
├── src/                    # Firmware source (.cpp, ESP-IDF) and build files (CMakeLists, idf_component)
│   ├── ui/                 # UI files generated with EEZ Studio (.c, .h)
├── hardware/
│   ├── schematic/          # KiCad schematic (.kicad_sch)
│   ├── pcb/                # KiCad PCB layout (.kicad_pcb)
│   └── gerbers/
│       └── v1.0/           # Manufacturing files for JLCPCB
├── partitions.csv          # ESP32s3 partitions
├── sdkconfig.defaults      # Configuration overrides
├── platformio.ini          # Platformio configuration
└── README.md

Tech Stack

ESP32 · ESP-IDF · FreeRTOS · LVGL · SquareLine Studio · C++ · SPI · PN532 · CC1101 · KiCad