Flipper Zero + ESP32 — Combined Hardware Reference
Aug 8, 2026 11:25am · 73 views
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Flipper Zero + ESP32 — Combined Hardware Reference
Flipper Zero Quick Reference
| Spec | Value |
|---|
| Firmware | Momentum (current) |
| SD Card | 32GB Sandisk |
| Sub-GHz | 300-928 MHz |
| NFC | 13.56 MHz |
| RFID | 125 kHz |
| IR | 850nm, up to 15m |
| BT | 5.0 (BLE HID) |
| GPIO | 3.3V logic, 18 pins |
| iButton | 1-Wire |
Flipper GPIO Pinout
| Pin | Function |
|---|
| 1 | +5V (USB only) |
| 2 | GND |
| 3 | +3.3V (50mA max) |
| 4 (PA7) | GPIO |
| 5 (PA6) | GPIO |
| 6 (PA4) | GPIO |
| 7 (PB3) | GPIO |
| 8 (PB2) | GPIO |
| 9 (PC3) | GPIO |
| 10 (PC1) | SDA (I2C) |
| 11 (PC0) | SCL (I2C) |
| 13 (PA5) | SPI MOSI |
| 14 (PA6) | SPI MISO |
| 15 (PA4) | SPI CLK |
| 16 | 1-Wire |
| 17 | UART TX |
| 18 | UART RX |
Wi-Fi Dev Board (ESP32-S2)
| Spec | Value |
|---|
| Chip | ESP32-S2 |
| Firmware | Marauder (flashed) |
| Connection | GPIO header |
| Power | Via Flipper 5V pin (USB required) |
ESP32 Standalone Quick Reference
| Model | Wi-Fi | BT | GPIO | Flash |
|---|
| ESP32 | Yes | Yes | 34 | 4MB |
| ESP32-S2 | Yes | No | 43 | 4MB |
| ESP32-S3 | Yes | BLE | 45 | 8MB+ |
| ESP32-C3 | Yes | BLE | 22 | 4MB |
ESP32 Common Pinout (38-pin DevKit)
| GPIO | Common Use |
|---|
| 2 | Onboard LED |
| 4, 5, 18, 19 | SPI (SS, MOSI, SCK, MISO typical) |
| 21, 22 | I2C (SDA, SCL) |
| 1, 3 | UART TX, RX (USB serial) |
| 34-39 | Input only (no internal pull-up) |
| 6-11 | Reserved (flash) — do not use |
Flipper + ESP32 Integration
| Use Case | How |
|---|
| Wi-Fi scanning | Marauder on dev board, controlled via Flipper app |
| UART bridge | Flipper GPIO 17/18 to ESP32 RX/TX |
| I2C sensor | Flipper PC0/PC1 to ESP32 I2C |
| Serial debug | Flipper UART Terminal app, 115200 baud |
Useful Firmware Sources
| Firmware | Device | Purpose |
|---|
| Momentum | Flipper | Recommended custom FW |
| Marauder | ESP32 dev board | Wi-Fi security tools |
| ESP-IDF | ESP32 | Official SDK |
| MicroPython | ESP32 | Python scripting |