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IoT Sensor Board Design for Environmental Monitoring

I am making this board for an IoT project Where I will be able to monitor my room’s Temp, Humidity, Air Pressure and Air Quality,

  1. undefined2001#0000

    my bad

  2. undefined2001#0000

    I am using STM32F103CT6 as main MCU and esp8266 for wifi connection and BME680 Here I have done the stm32 part can anyone review this schematic for me please

  3. josephogbonna#0000

    Why is the D+ for the usb data line connected to the +3.3v power supply. What’s the purpose of that. Don’t thing that should be there

  4. undefined2001#0000

    Thanks in Advance

  5. undefined2001#0000

    I did it wrong

  6. undefined2001#0000

    mainly for stm32f103cbt6 we need a 1.5k pullup resistor so that it can be recognised as a full-speed usb device

  7. undefined2001#0000

    @josephogbonna

  8. undefined2001#0000

    fixed it. Thanks man

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