Review on 🔌 HiLetgo UNO R3 D1 R32 ESP32 ESP-32 CH340G WiFi+Bluetooth+UNO Development Board WiFi Bluetooth 4MB Flash with Micro USB for Arduino: A Versatile Solution for IoT Projects by George Scoles

I couldn't get this device to flash through the Arduino no matter how hard I tried. I would get this error: Connecting._____._____._____._____._____._____.____ There was an error uploading the sketch. You need to hold the button for a second or two and then release it while blinking. After the first firmware was completed via the espressif app, I was able to carry out the subsequent firmware as normal via Arduino. So far the device works well. Thank you HiLetgo