See through walls. No cameras. No IR. Just WiFi.

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Every WiFi packet that moves through a room carries hidden data about that room — the amplitude, phase, and propagation delay of the signal across dozens of frequency subcarriers. When something moves, those values shift. CSIght reads those shifts in real time using your ESP32's WiFi hardware and renders them on your Flipper Zero as a live radar display.

No special hardware. No cameras. No IR sensors. Just the WiFi radio already sitting on your ESP32 expansion board.

Radar Mode

┌──────────────────────────┐
│ CSIght                   │
│  · ╭────╮ ·   MOTION     │
│  · │ ╱  │ ·   ████       │
│  · ╰────╯ ·   RANGE      │
│  · · ● · ·    ████       │
│              SENS: 7     │
└──────────────────────────┘
Sweep rotates, blips fade.
Motion triggers TARGET ACQUIRED flash.

Waterfall Mode

┌──────────────────────────┐
│ CSIght  WATERFALL        │
│ █░░░░░░░░░░░░█░░░░░░░░░░ │
│ █░░░░█░░░░░░░█░░░░░░░░░░ │
│ █░░░░█░░█░░░░█░░░░░░░░░░ │
│ █░░░░█░░█░░█░█░░░░░░░░░░ │
│ █░██░█░░█░░█░█░░░░░░░░░█ │
│                      S:7 │
└──────────────────────────┘
Scrolling CSI amplitude history.

Proximity Mode

┌──────────────────────────┐
│         CSIght           │
│        PROXIMITY         │
│           ○              │
│          ○○○             │
│         ○○○○○            │
│           ■              │
│          72%             │
└──────────────────────────┘
Concentric arcs show distance.

Switch modes with ← / → during scanning.

• Auto chip detection — ESP32 reports its own model and CSI support tier on connect
• 40+ board presets — covers official Flipper boards, DevKits, XIAO, Adafruit, SparkFun, M5Stack, LOLIN, and more
• Custom pin override — set any TX/RX pair, saved to SD card so you only do it once
• Three display modes — radar sweep, waterfall, proximity — switchable live
• Adjustable sensitivity — tune detection threshold on the fly
• Proximity estimation — rough distance to detected motion using signal delta strength
• Zero configuration on known boards — preset auto-populates pins from firmware handshake

Full = amplitude + phase across all subcarriers → best accuracy Limited = amplitude only → motion detection still works fine

Grab the latest release ZIP from the Releases page. It contains:

CSIght/
├── flipper/
│   ├── official/     csight.fap  ← stock firmware
│   ├── momentum/     csight.fap  ← Momentum firmware
│   └── unleashed/    csight.fap  ← Unleashed firmware
└── esp32/
    ├── esp32/        ← WROOM-32, NodeMCU, most 3-in-1 boards
    ├── esp32s3/      ← S3 DevKit, XIAO-S3, TinyS3
    ├── esp32c3/      ← C3 Mini, XIAO-C3, C3 Super Mini
    └── esp32c6/      ← C6 DevKit, XIAO-C6

1. Open Chrome or Edge (must be Chromium-based)
2. Go to ESP Web Flasher
3. Click Connect and select your ESP32 from the popup
4. Click Program, add each .bin file with the correct address:

5. Click Program and wait for it to finish
6. Press Reset on the board

⚠️ ESP Web Flasher only works in Chrome or Edge — not Safari or Firefox

pip install esptool

esptool.py --chip auto --port /dev/ttyUSB0 --baud 460800 \
  write_flash \
  0x1000  bootloader.bin \
  0x8000  partition-table.bin \
  0x10000 csight_esp32.bin

Replace /dev/ttyUSB0 with your port — see FLASH_INSTRUCTIONS.md for full details and port finding instructions.

Copy the .fap matching your Flipper firmware to:

SD Card/apps/GPIO/csight.fap

Launch from Apps → GPIO → CSIght.

⚠️ Power your ESP32 board before launching CSIght on the Flipper. The app will warn you if you forget.

Pins are configurable inside the app and saved to SD card — set once, never again.

Push to main to trigger the GitHub Actions build. It compiles all three Flipper firmware targets and packages everything into a release ZIP. Tag with v1.0 to publish a GitHub Release automatically.

# ESP32 firmware (requires ESP-IDF v5.2+)
cd esp32
idf.py build

# Flipper FAP
cd flipper
ufbt

CSIght is intended for use on hardware you own, in spaces you have permission to monitor. WiFi CSI reads signal metadata from your own radio hardware — it does not intercept, decode, or store anyone's network traffic or communications.

You are responsible for ensuring your use of CSIght complies with the laws of your country and region. In particular:

• Do not use CSIght to monitor people in spaces without their knowledge or consent
• Do not use CSIght in jurisdictions where passive RF sensing is restricted
• The authors accept no liability for misuse of this software

This project is provided in good faith for hobbyist, research, and educational purposes.

If CSIght is useful to you, a coffee goes a long way 👇

MIT © CSIght contributors — see LICENSE for full terms.