LILYGO T-SimCam

Overview

The LILYGO T-SimCam is an ESP32-S3 based camera development board that combines machine vision capabilities with an mPCIe expansion slot for T-PCIE cellular modules. The ESP32-S3R8 provides 8MB of PSRAM alongside 16MB Flash and a dual-core Xtensa LX7 running at 240MHz — substantial resources for real-time image processing and AI inference at the edge.

Four camera module variants are available: the standard OV2640 (2MP, $13.86), an OV2640 with IR-CUT filter for day/night use ($17.89), the OV5640 5MP sensor ($21.48), and the OV5640 with autofocus ($23.80) or IR-CUT filter ($23.16). All camera interfaces use a standard MIPI/DVP camera connector, and the board supports the ESP32-S3's hardware JPEG encoder for fast image compression.

The onboard I2S digital microphone enables audio capture for voice command recognition, sound detection, and recording applications. A microSD card slot provides local storage for captured images and audio. Boot and Reset buttons are included for easy development.

The mPCIe slot accepts T-PCIE SIM modules (sold separately) supporting a wide range of cellular protocols — from LTE Cat-M and NB-IoT to LTE Cat-4 — enabling the camera to upload images and video over cellular networks without Wi-Fi infrastructure. This makes the T-SimCam ideal for remote security cameras, wildlife monitoring, industrial inspection systems, and edge AI applications that need cellular backhaul.

Firmware Compatibility

• Arduino: Supported via the ESP32 Arduino core with ESP32-S3 target. Use the esp32-camera library for image capture and the ESP-WHO framework for face detection.
• ESP-IDF: Fully supported with native camera driver (esp_camera component) and HTTP streaming libraries.

Flashing Guide

1. Connect via USB Type-C cable.
2. In Arduino IDE, select "ESP32S3 Dev Module" and configure with 16MB Flash and 8MB PSRAM (OPI mode).
3. Install the esp32-camera library for image capture functionality.
4. For cellular connectivity, install the T-PCIE SIM module into the mPCIe slot and install the appropriate TinyGSM or AT command library.
5. Hold BOOT while pressing RST to enter download mode if auto-reset fails.
6. Refer to https://github.com/Xinyuan-LilyGO/LilyGo-Camera-Series for complete examples and pinout diagrams.