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The MT3608 DC-DC Step-Up Boost Converter Module is a high-efficiency voltage booster capable of converting low DC input voltage to a higher adjustable output. Ideal for battery-powered projects, Arduino, ESP32, and portable electronics.

MH-CD42 is a 1S 3.7V lithium battery charging and 5V boost converter module, commonly used in DIY power bank and portable power projects.

The ESP32-C3 0.42″ OLED Development Board is a compact Wi-Fi & Bluetooth LE microcontroller board with a built-in 0.42-inch SSD1306 OLED display. It is ideal for IoT projects, smart devices, sensors, and small embedded applications where size and power efficiency matter.

High-performance MAX9814 Microphone Amplifier with Automatic Gain Control (AGC). Features selectable 40dB/50dB/60dB gain and low-noise performance. Perfect for Arduino, ESP32, and voice-recognition projects. Operates at 2.7V–5.5V.

High-quality Jumper Wire 20 CM(Dupont cable) for quick and solder-free connections in Arduino, ESP32, ESP8266, Raspberry Pi, and breadboard projects.

1.3 Inch OLED Display with SH1106 Driver (I2C) features a sharp 128×64 monochrome screen with low power consumption. Using the I2C interface, it is easy to connect and fully compatible with Arduino, ESP32, ESP8266, STM32, and Raspberry Pi—ideal for IoT and embedded projects.