A000015

Overview

The Arduino A000015 is the official Arduino Uno microcontroller board, serving as a foundational platform for electronics prototyping. It is built around the ATmega328P microcontroller operating at 16 MHz. The board provides 14 digital input/output pins, six of which support PWM output, and six analog inputs. Power options include USB connection or an external DC supply via the barrel jack (7-12V recommended). Key interfaces include UART, SPI, and I2C. It features auto-reset functionality and includes onboard LEDs for power, TX/RX activity, and pin 13 control.

Feature Summary

• ATmega328P microcontroller with integrated bootloader
• Multiple communication interfaces including UART, SPI, and I2C
• Dual power input methods via USB and DC jack
• Onboard status LEDs for power and signal monitoring

Applications

• General-purpose electronics prototyping and education
• IoT device development and sensor integration
• Automation controls and robotics projects

Procurement Notes

Verify the specific revision of the board, as component variations exist between older revisions using the ATmega16U2 and newer ones using the ATmega32U4 for USB-to-serial conversion. Ensure the source provides the official schematic and bill of materials to confirm pinout compatibility with standard shields. Check for counterfeit markings on the PCB silkscreen.

Selection Notes

Select this model for projects requiring a standardized form factor compatible with the extensive ecosystem of Uno-compatible shields. It is suitable for beginners due to its simplicity and widespread documentation. For applications requiring higher processing power or native USB connectivity without a separate converter chip, consider the Arduino Mega or Leonardo alternatives.

Part Context

The A000015 designation refers specifically to the original hardware design of the Arduino Uno R3. It established the standard pinout and mechanical dimensions used by countless third-party clones and compatible boards. This specific part number represents the reference design manufactured by Arduino S.r.l., distinguishing it from later iterations or variant models in the product line.

Replacement Considerations

Direct functional replacements include the Arduino Uno R3 (if upgrading firmware/hardware minor revisions) or the Arduino Nano for space-constrained builds. For pin-compatible alternatives, verify the voltage level (5V vs 3.3V) and clock speed differences when substituting with other AVR-based boards.