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Pin Conflicts

  • During code (firmware) uploading, do not make any external connections to the D13 (BOOT) pin. After the upload process is completed, you may connect external components.
  • During code (firmware) uploading, do not make any external connections to the TX (D1) and RX (D0) pins. After the upload process is completed, if you are not using these pins for UART communication, you may connect external components.
  • If an external connection is provided via the I2C connector, an external connection with the same I2C pin configuration may be made to D8 (SDA) and D7 (SCL) pins; however, other than this, do not make any external connections to these pins.

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Assembly

When removing the board placed on a breadboard (protoboard) or a similar platform, carefully hold it by its edges as shown in the image to prevent damage to the USB port.

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Maximum Voltage for Analog Reading

The A0, A1, A2, A3, A4, A5, and A6 pins, which have 13-bit resolution, can be used as input pins for analog signals. These pins reach the maximum value of 8191 at approximately 2.60 V.