copilot

1. Power Connections:
   • Ensure all components that need power are connected to appropriate power nets.
   • Verify that the power supply voltages match the requirements of the components.
2. Ground Connections:
   • Confirm that all components requiring a ground connection are properly connected.
3. Signal Connections:
   • Verify the signal connections between components to ensure they match the expected pin functions.
4. Component Compatibility:
   • Check if the components are compatible with each other in terms of voltage levels and communication protocols.

• Arduino Nano:
  • +5V: Connected to Net 12. $\text{[OK]}$
  • 3V3: Connected to Net 8. $\text{[OK]}$
• ADXL345:
  • VDDIO: Connected to `Net 8$ (3.3V from Arduino Nano). $\text{[OK]}$
• HC-05:
  • 3.3_VCC: Connected to `Net 13$. $\text{[OK]}$

• ADXL345: Connected at `GND@1$. $\text{[OK]}$
• HC-05: Connected. $\text{[OK]}$
• Arduino Nano: Connected. $\text{[OK]}$

• I2C Communication:
  • ADXL345 (SCL/SCLK): Connected to Arduino Nano (A5) via `Net 10$. $\text{[OK]}$
  • ADXL345 (SDA/SDI/SDIO): Connected to Arduino Nano (A4) via `Net 9$. $\text{[OK]}$
• UART Communication:
  • HC-05 (UART-RX): Connected to Arduino Nano (D1/TX) via `Net 11$. $\text{[OK]}$
  • HC-05 (UART-TX): Connected to Arduino Nano (D0/RX) via `Net 14$. $\text{[OK]}$

• Power Supply Compatibility:
  • ADXL345: Operating voltage 1.8V to 3.6V $\text{[OK, connected to 3.3V]}$
  • HC-05: Operating voltage 3.3V. $\text{[OK, connected to 3.3V]}$

1. Unused Pins/Connections:
   • Verify if there are any important pins or signals left unconnected, which might lead to abnormal behavior.
   • Ensure all required pull-up/pull-down resistors are in place.
2. Diode Connections:
   • Confirm the intended use and correct placement of diodes $D11$, $D12$, and $D1$. Additionally, diodes in such small packages often have very low current ratings, ensure they are appropriate.
3. Communication Interface Consideration:
   • Ensure that there aren't any overlap or cross-talk issues with shared interfaces, such as I2C pull-up resistors, etc.

copilot

1. Locate the component on your schematic.
2. Select the component by clicking on it.
3. Press the Delete key on your keyboard, or right-click and select Delete from the context menu that appears.

1. Locate the net (wire) on your schematic.
2. Select the net by clicking on it.
3. Press the Delete key on your keyboard, or right-click and select Delete from the context menu.

1. Locate the comment on the schematic editor canvas.
2. Click on the comment to select it.
3. Press the Delete key on your keyboard, or right-click and select Delete Comment.

1. Locate the comment thread (this should be visible as a series of comments linked together).
2. Click on the comment thread to select it.
3. Press the Delete key on your keyboard, or right-click and select Delete Thread.

copilot

1. Select $R4$ in the schematic: Click on it to view its properties.
2. Identify the Pin Numbers on $R4$: Typically, for resistors, one end is designated as pin 1, and the other as pin 2.
3. Check the Connections to Other Components: Look at the connections from $R4$ to gain an understanding of which pins are connected to other nodes or components in your circuit.

• Hover Over $R4$: You might see air wires (unrouted connections) connecting to its pins.
• Routing Details:
  • Start routing from one pin to see its connection. Hover your cursor over the pin; it should turn bluish. Then click to start connection.
  • You can check the direction of the route and adjust it as needed.

copilot

• Unconnected Pins: RESET, D3, D4, D5, D6, D7, D8, D9, D10, D11/MOSI, D12/MISO, D13/SCK, VIN

• Unconnected Pins: RES@1, RES@2, INT1, INT2

• Unconnected Pins: ~RESETB, ~UART-CTS, ~UART-RTS, PCM-IN, PCM-OUT, SPI_MOSI, ~SPI_CSB, SPI_CLK, SPI_MISO, USB_-, USB_+, PCM-CLK, PCM-SYNC, AIO[1], AIO[0], PIO[11], PIO[10], PIO[9], PIO[8], PIO[7], PIO[6], PIO[5], PIO[4], PIO[3], PIO[2], PIO[1], PIO[0]

• Digital Pins (D3 to D13): Enable internal pull-up resistors in the software.
• RESET Pin: Typically does not require an external pull-up resistor since it is handled internally on the Arduino board.
• VIN: Should be left unconnected if not powering the board through this pin.

• RES Pins (RES@1, RES@2): These are reserved pins and should be left unconnected as per the datasheet.
• INT Pins (INT1, INT2): These are interrupt pins and can be left unconnected if not used.

• Control Pins (~RESETB, ~UART-CTS, ~UART-RTS): ~RESETB usually needs a pull-up resistor.
• PCM and SPI Pins: Usually do not need pull-ups/downs if not being utilized.
• UART Pins (UART-CTS, UART-RTS): Often left floating if hardware flow control is not used.
• AIO and PIO Pins: If left unconnected, typically do not require pull-up or pull-down resistors.

• Enable internal pull-ups on unused digital I/O pins of the Arduino Nano.
• Leave the reserved pins (RES@1 and RES@2) of the ADXL345 unconnected.
• For the HC-05, attach a pull-up resistor to ~RESETB (10k Ohm is typical). The other control pins can generally be left unconnected unless you're using those features.