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You may access the use of the microSD card reader with the use of the SD library built-in within the Arduino IDE
Each I/O pin of the Arduino Nano can source or sink around 40mA of current
Camera Module 3 Wide NoIR (5660)
Product Dust Sensor GP2Y1014AUOF for Arduino Model GP2Y1014AUOF Output Analog voltage proportional to dust density Supply Voltage 5–7 V Current Consumption 20 mA max Size 46 × 34 mm Weight 20 g IoT bundle ESP32 + Wi-Fi code template for sending data to a phone/Cloud Endurance Life ≈ 5 years Wiring & usage notes
DFRobot LM386 Audio Amplifier Module - Arduino Compatible gps shield You may access the useThis 386AMP audio amplifier module has 20 voltage gain and uses the National Semiconductor LM386 audio power amplifier chip. In the 6V power supply, it's static power consumption is only 24mW, the module is suitable for battery powered. The 386AMP audio amplifier can be connected to a MIC or MP3. It is ideal for robot human machine voice interaction and sound amplification. SPECIFICATION Power supply: 4 12V Output power: VS = 6V, RL = 8W,P=325mWPeak
