US$ 29.95
and wall adapters rated for 2A or higher output
Configure I2C bus speed to 400 kHz for standard operation or 1 MHz for faster refresh rates in time-critical applications
making it suitable for circuits operating at low to moderate current levels
Range varies significantly with spreading factor selection: SF7 provides approximately 2-3 kilometers with faster data rates
ESP32 ESP-32 ESP-32S ESP 32 Development Board CP2102 WiFi Bluetooth Ultra-Low Power Consumption Dual Core (38 PIN) 4 pieces 7 X 4 Cm Gear Motor Robot Wheel & 4 pieces 200 RPM Gear Motor for Robotics Science Project and wall adapters rated forESP32 ESP 32 ESP 32S ESP 32 Development Board CP2102 WiFi Bluetooth Ultra Low Power Consumption Dual Core (38 PIN)