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ESP32 WiFi/Bluetooth Dev Board ESP-32S ESP-WROOM-32 1pc/5pcs/10pcs
ESP32 WiFi/Bluetooth microcontroller development board based on the ESP-WROOM-32 chip.
ESP-WROOM-32 is a versatile and powerful Wi-Fi + BT + BLE MCU module that can be used for low power sensor networks and demanding tasks such as voice coding, audio streaming and MP3 decoding and so on.
XL4015 5A Adjustable Voltage Step-Down Buck Module with Voltmeter Display
180 KHz fixed frequency PWM buck (step-down) DC/DC module, capable of driving a 5A load with high efficiency, low ripple and excellent line and load regulation. Includes a built-in voltage meter to display the input voltage and output voltage, and the accuracy of the voltmeter display can be adjusted using the buttons.