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The Arduino Mega board utilizes a genuine Atmel ATmega2560 microcontroller and an inexpensive CH340G USB-UART interface
and a variety of teaching materials
Hardware Overview
20mA sink current MAXIMUM
Through-hole solder pins for the circuit board
LM358 Op-Amp Amplifier Module 100xgain GSM The Arduino Mega board utilizesAudio 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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