ESP32-S3 WROOM-1 240MHz · 8MB GPIO0GPIO1SDASCLTX0RX0 MOSIMISOSCKCSEN3V3 Heltec WiFi LoRa 32 V4 SX1262 · 868/915MHz WiFi+BLE+LoRa OLED 128x64 · SSD1306 TCA9554 I²C GPIO EXP 8-bit · ADDR 0x20 P0–P7 · INT SDASCLA0A1A2INT P0P1P2P3P4P5 SX1262 LoRa TRX · +22dBm SPI Interface PCA9685 16-Ch PWM · I²C RGBW · SERVO · LED SIM800L GSM/GPRS · UART 850/900/1800 MHz W5500 Hardwired TCP/IP 100BASE-T · SPI I²C BUS GPIO CLK UART DATA ADC IN NET001: VCC_3V3NET008: LoRa_NSSNET015: SDA_0 I²C_ADDR: 0x20 · 0x40 · 0x48 · 0x68 BRENDUHNET SYSTEMS TITLE: REV: B.3 SHT: 1/4 CarPotato ECO DATE: 2026-03 LIGHT BAR · CH0 DITCH · CH3 RELAY BANK CH0 CH1 CH2 CH3 RGBW ROCK LIGHTS PAN/TILT MOUNT BLE · CONNECTED DOG MODE · CABIN 72°F SAFE GPS · GEOFENCE 39.32°N 120.18°W BATTERY · DBP 13.2V LoRa 915MHz WINCH ACTUATOR SCENE: OFF-ROAD 4/8 ON AMS1117 3.3V REG 0x40 PCA9685 0x41 PCA9685 0x20 TCA9554 0x48 ADS1115 WiFi · AP CELL · SIM800L OBD-II · COMING SOON

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