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Hardware Overview
The Arduino Mega board utilizes a genuine Atmel ATmega2560 microcontroller and an inexpensive CH340G USB-UART interface
Water Pressure: ≤0
Operating Voltage: 12V DC
adjusting the output frequency can be controlled resistance
LM358 Op-Amp Amplifier Module 100xgain GSM Hardware OverviewAudio amplifier module 100 times LM358 XD 21A Technical specifications LM358 chip onboard. 100 gain of the circuit design. The working voltage: 5 12V. 10K onboard adjustable resistance, you can adjust the magnification. Onboard power indicator. The chip has led major pin can be directly input and output signals. Size: 32. 7mm * 13. 3mm.
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