haxan7
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Can sim900d tolerate 5v logic levels? Its datasheet says that the supply voltage should be between 3.2 and 4.8V.
I want to interface sim900d with my arduino running at 5v. If i connect the gsm module and arduino directly would the 5v logic signals by arduino damage my gsm module. If it's safe what voltage should i run my gsm module at?
I want to interface sim900d with my arduino running at 5v. If i connect the gsm module and arduino directly would the 5v logic signals by arduino damage my gsm module. If it's safe what voltage should i run my gsm module at?