How to Use uCup_BasePCB_Reuse: Examples, Pinouts, and Specs

The uCup_BasePCB_Reuse is a reusable base printed circuit board (PCB) designed by uCup with the part ID ESP32_A7670G. This PCB is tailored for the uCup project, providing a versatile platform for integrating and modifying electronic components. It is ideal for prototyping, modular designs, and applications requiring flexibility and reusability. The board is compatible with a wide range of microcontrollers, sensors, and communication modules, making it suitable for IoT, robotics, and custom electronics projects.

• IoT Prototyping: Easily integrate sensors, actuators, and communication modules.
• Robotics: Use as a control board for small to medium-sized robots.
• Educational Projects: Ideal for teaching circuit design and prototyping.
• Custom Electronics: Build and test custom circuits with reusable components.
• Smart Devices: Develop smart home or wearable technology solutions.

The uCup_BasePCB_Reuse features a modular pin layout for easy integration. Below is the pin configuration:

1. Powering the PCB: Connect a 3.3V or 5V power source to the VIN pin and GND pin.
2. Connecting a Microcontroller:
   • Mount an ESP32, Arduino, or other compatible microcontroller onto the PCB.
   • Use the GPIO, I2C, SPI, or UART pins to interface with external components.
3. Adding Peripherals:
   • Solder sensors, actuators, or communication modules to the appropriate pins.
   • Ensure proper voltage levels for connected peripherals.
4. Programming:
   • Use a USB-to-serial adapter or onboard programming interface to upload code to the microcontroller.
5. Testing:
   • Power the circuit and verify functionality using a multimeter or oscilloscope.

• Voltage Compatibility: Ensure all connected components operate within the 3.3V to 5V range.
• Current Limits: Do not exceed the 2A maximum current capacity of the PCB.
• Soldering: Use a fine-tipped soldering iron and avoid overheating the PCB pads.
• Static Protection: Handle the PCB with care to prevent electrostatic discharge (ESD) damage.
• Mounting: Use the provided screw holes to securely mount the PCB in your project enclosure.

Below is an example of how to connect the uCup_BasePCB_Reuse to an Arduino UNO and control an LED:

• Connect the Arduino's 5V pin to the VIN pin on the PCB.
• Connect the Arduino's GND pin to the GND pin on the PCB.
• Connect a digital pin (e.g., D9) on the Arduino to GPIO1 on the PCB.
• Connect an LED to GPIO1 with a 220-ohm resistor in series.

// Example code to blink an LED connected to GPIO1 on the uCup_BasePCB_Reuse

#define LED_PIN 9  // GPIO1 on the PCB is connected to Arduino pin D9

void setup() {
  pinMode(LED_PIN, OUTPUT);  // Set the LED pin as an output
}

void loop() {
  digitalWrite(LED_PIN, HIGH);  // Turn the LED on
  delay(1000);                  // Wait for 1 second
  digitalWrite(LED_PIN, LOW);   // Turn the LED off
  delay(1000);                  // Wait for 1 second
}

1. PCB Not Powering On

   • Cause: Incorrect power supply voltage.
   • Solution: Ensure the input voltage is between 3.3V and 5V.

2. Microcontroller Not Responding

   • Cause: Incorrect pin connections or faulty programming.
   • Solution: Double-check connections and re-upload the code.

3. Peripheral Devices Not Working

   • Cause: Voltage mismatch or incorrect wiring.
   • Solution: Verify the voltage requirements and wiring of the peripherals.

4. Overheating

   • Cause: Excessive current draw.
   • Solution: Ensure the total current does not exceed 2A.

• Q: Can I use this PCB with a Raspberry Pi?

  • A: Yes, the PCB is compatible with Raspberry Pi GPIO pins.

• Q: Is the PCB suitable for outdoor use?

  • A: The PCB is not weatherproof. Use a protective enclosure for outdoor applications.

• Q: Can I power the PCB with a battery?

  • A: Yes, as long as the battery provides a stable voltage between 3.3V and 5V.

• Q: What is the maximum number of peripherals I can connect?

  • A: This depends on the power and GPIO pin availability. Ensure the total current draw does not exceed 2A.

This concludes the documentation for the uCup_BasePCB_Reuse. For further assistance, refer to the manufacturer's datasheet or contact uCup support.