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Fixing incorrect predefined XTAL (onboard crystal) frequency, that cause incorrect frequency of output PWM signal and rubbish charactersin debug terminal.

189
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Let's find out the ESP32 internal pull-up/pull-down resistance by measuring of the real resistance of the using ampermeter.

285

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Assembling Android oscilloscope based on STM32F401/STM32F411 microcontroller with additional WiFi SoC ESP32 module, that give a chance to get wireless Wi-Fi connection and remotely monitoring signals.

8.72K
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