Title: Connection Setup
Description: Configure the serial connection between your Flipper Zero and GhostESP device.
URL: /v2.1/flipper-app/connection/
Version: v2.1
Section: Flipper Zero App
Keywords: connection, uart, serial, gpio, wiring
Search index: /search-index.json

# Connection Setup

> Configure the serial connection between your Flipper Zero and GhostESP device.

## On this page

- [Hardware Connection](#hardware-connection)
- [Software Connection](#software-connection)
- [Connection Troubleshooting](#connection-troubleshooting)
- [Next Steps](#next-steps)

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## Hardware Connection
Connect your ESP32 device to your Flipper Zero via UART:
ESP32 Pin |
Flipper GPIO Pin |
TX |
GPIO 13 or 15 |
RX |
GPIO 14 or 16 |
GND |
GND |
VCC |
3.3V (if needed, check your board’s power requirements) |
Note: Pin configurations may vary depending on your Flipper Zero setup. Refer to your specific hardware documentation or the companion app’s connection guide.
## Software Connection
- Power on your GhostESP device
- Launch the GhostESP app on your Flipper Zero
- The app will automatically attempt to connect via serial
## Connection Troubleshooting
App can’t connect to GhostESP
- Verify serial wiring (TX, RX, GND)
- Check that GhostESP device is powered on
- Try restarting both devices
- Check serial port configuration in app settings
Connection drops during use
- Check wiring connections for loose connections
- Verify power supply is stable
- Move away from sources of electrical interference
- Try reducing baud rate if using high-speed connection
## Next Steps
Once connected, explore the available features:
- [Wi-Fi Features](/v2.1/flipper-app/wifi-features/)
- [BLE Features](/v2.1/flipper-app/ble-features/)
- [GPS Features](/v2.1/flipper-app/gps-features/)