Set up an ESP32-CAM as an I2C master to communicate with an Arduino Uno slave at address 0x39. The communication involves the following steps: ESP32-CAM sends "key value" to the Arduino at address ...

Unlike other ESP Development Boards, the ESP32-CAM has no USB connector to connect it to a computer. This might be confusing for beginners when they try to program this development board for the first ...

Developing a home door security system in C with a keypad, RFID scanner, and ESP32-CAM for access control and image capture and implementing user management and monitoring of unauthorized access via a ...

本書の以下の部分に誤りがありました。ここに訂正するとともに、ご迷惑をおかけしたことを深くお詫び申し上げます。 誤 一方、ESP32は2系統目のシリアルを使います（16番ピンが送信、17番ピンが受信）。片方の送信を他方の受信に接続しますので、Arduino ...

SparkFun has just launched the “IoT RedBoard – RP2350” and “IoT RedBoard – ESP32” boards with Arduino UNO R4 form factor based on respectively Raspberry Pi RP2350B + RM2 wireless module and ...