T-SimCam Quick Start

Required Libraries

Library	Version	Source
esp32-camera	Latest	GitHub
TinyGSM	Latest	GitHub

---

Arduino

PlatformIO (Recommended)

1. Install VS Code and the PlatformIO IDE extension
2. Clone the repository:

   git clone https://github.com/Xinyuan-LilyGO/T-SimCam.git

3. Open platformio.ini and select the target example
4. Click ✓ to build, connect via USB-C, click → to upload

---

Arduino IDE

Board Settings

Setting	Value
Board	ESP32S3 Dev Module
Upload Speed	921600
USB CDC On Boot	Enable
CPU Frequency	240 MHz (WiFi)
Flash Size	16 MB (128Mb)
Partition Scheme	16M Flash (3MB APP/9.9MB FATFS)
PSRAM	OPI PSRAM

---

Peripheral Examples

Camera (OV2640)

#include "esp_camera.h"

// T-SimCam camera pin config — check T-SimCam schematic for exact assignments
#define PWDN_GPIO_NUM  -1
#define RESET_GPIO_NUM -1
#define XCLK_GPIO_NUM  15
#define SIOD_GPIO_NUM  4
#define SIOC_GPIO_NUM  5
#define Y9_GPIO_NUM    16
#define Y8_GPIO_NUM    17
#define Y7_GPIO_NUM    18
#define Y6_GPIO_NUM    12
#define Y5_GPIO_NUM    10
#define Y4_GPIO_NUM    8
#define Y3_GPIO_NUM    9
#define Y2_GPIO_NUM    11
#define VSYNC_GPIO_NUM 6
#define HREF_GPIO_NUM  7
#define PCLK_GPIO_NUM  13

void setup() {
  Serial.begin(115200);
  camera_config_t config;
  config.ledc_channel = LEDC_CHANNEL_0;
  config.ledc_timer   = LEDC_TIMER_0;
  config.pin_d0 = Y2_GPIO_NUM; config.pin_d1 = Y3_GPIO_NUM;
  config.pin_d2 = Y4_GPIO_NUM; config.pin_d3 = Y5_GPIO_NUM;
  config.pin_d4 = Y6_GPIO_NUM; config.pin_d5 = Y7_GPIO_NUM;
  config.pin_d6 = Y8_GPIO_NUM; config.pin_d7 = Y9_GPIO_NUM;
  config.pin_xclk  = XCLK_GPIO_NUM; config.pin_pclk  = PCLK_GPIO_NUM;
  config.pin_vsync = VSYNC_GPIO_NUM; config.pin_href  = HREF_GPIO_NUM;
  config.pin_sccb_sda = SIOD_GPIO_NUM; config.pin_sccb_scl = SIOC_GPIO_NUM;
  config.pin_pwdn  = PWDN_GPIO_NUM;  config.pin_reset = RESET_GPIO_NUM;
  config.xclk_freq_hz = 20000000;
  config.pixel_format = PIXFORMAT_JPEG;
  config.frame_size   = FRAMESIZE_QVGA;
  config.jpeg_quality = 12;
  config.fb_count     = 2;
  if (esp_camera_init(&config) != ESP_OK) {
    Serial.println("Camera init failed"); return;
  }
  Serial.println("Camera ready");
}

void loop() {
  camera_fb_t *fb = esp_camera_fb_get();
  if (fb) {
    Serial.printf("Captured %u bytes\n", fb->len);
    esp_camera_fb_return(fb);
  }
  delay(2000);
}

LTE Data (TinyGSM)

#define TINY_GSM_MODEM_SIM7600
#include <TinyGsmClient.h>

HardwareSerial modemSerial(1);
TinyGsm modem(modemSerial);

void setup() {
  Serial.begin(115200);
  modemSerial.begin(115200, SERIAL_8N1, /*RX=*/26, /*TX=*/27);
  // Power on modem
  pinMode(4, OUTPUT);
  digitalWrite(4, HIGH); delay(1000);
  digitalWrite(4, LOW);  delay(2000);
  modem.restart();
  Serial.println("Modem: " + modem.getModemInfo());
  modem.gprsConnect("your.apn", "", "");
  Serial.println("Connected: " + String(modem.isGprsConnected()));
}

void loop() { delay(1000); }

---

FAQ

Q: Upload keeps failing?
A: Hold BOOT, press and release RST, then release BOOT to enter download mode.

Q: What is T-SimCam used for?
A: T-SimCam combines a camera (OV2640) with a 4G LTE modem, enabling cellular image/video upload applications — e.g., remote surveillance, asset monitoring.