T-Bao Quick Start

Required Tools

Tool	Source
kflash_gui	GitHub
MaixPy IDE	GitHub
Arduino IDE	arduino.cc

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K210 Side (AI / Camera)

1. Download MaixPy firmware from the MaixPy releases page
2. Flash MaixPy to the K210 using kflash_gui (select the correct COM port and baud rate)
3. Open MaixPy IDE, connect to the board, and run Python scripts for camera / face recognition / YOLOv3 tasks

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ESP32 Side (Wi-Fi / BLE)

Board Settings

Setting	Value
Board	ESP32 Dev Module
Upload Speed	921600
Flash Mode	QIO
Flash Size	16MB (128Mb)
Partition Scheme	16M Flash (3MB APP/9.9MB FATFS)
PSRAM	Enabled

Steps

1. Clone the repository:

   git clone https://github.com/Xinyuan-LilyGO/LilyGo-K210-Script.git

2. Open an example sketch in Arduino IDE
3. Select the board settings above and click Upload

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Peripheral Examples

K210 — Camera + Face Detection (MaixPy)

# Run on K210 via MaixPy IDE
import sensor, image, lcd, KPU

lcd.init()
sensor.reset()
sensor.set_pixformat(sensor.RGB565)
sensor.set_framesize(sensor.QVGA)
sensor.run(1)

task = KPU.load(0x300000)  # load face detection model from flash
KPU.init_yolo2(task, 0.5, 0.3, 5, [(1.889, 2.5245), (2.9465, 3.94056)])

while True:
    img = sensor.snapshot()
    code = KPU.run_yolo2(task, img)
    if code:
        for i in code:
            img.draw_rectangle(i.rect())
    lcd.display(img)

K210 — Display (MaixPy)

T-Bao's 1.54-inch ST7789V display is connected to the K210 side. Use MaixPy's lcd module to draw images or text. ESP32 does not drive this display directly.

# Run on K210 via MaixPy IDE
import lcd
import image

lcd.init()

img = image.Image(size=(240, 240))
img.clear()
img.draw_string(48, 108, "T-Bao Ready", color=(255, 255, 255), scale=2)
lcd.display(img)

ESP32 — UART Bridge to K210

// K210 communicates with ESP32 via UART: RX=3, TX=1
HardwareSerial k210(2);

void setup() {
  Serial.begin(115200);
  k210.begin(115200, SERIAL_8N1, 3, 1);
}

void loop() {
  if (k210.available()) {
    String msg = k210.readStringUntil('\n');
    Serial.println("K210: " + msg);
  }
}

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Notes

• Dual-chip: K210 (RISC-V, AI) communicates with ESP32 (Wi-Fi/BLE) via UART
• Camera: OV2640 2 MP with 180° rotation support
• Display: ST7789V display is driven by K210; ESP32 does not connect to the display directly
• K210 AI: ~0.5 TOPS KPU — capable of YOLOv3, face recognition, and image classification
• PMU: AXP202 power management — controls power rails for both chips
• IMU: MPU6050 6-axis (I²C)

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FAQ

Q: K210 not detected by kflash_gui? A: Select the correct COM port and set baud rate to 115200 or 1500000. Ensure the board is in download mode (hold BOOT while connecting).

Q: ESP32 side not uploading? A: Confirm you are connecting to the ESP32 USB port (not the K210 port) and have selected ESP32 Dev Module.