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29 changes: 10 additions & 19 deletions content/hardware/02.hero/boards/uno-rev3/tutorials/board-anatomy/content.md
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Expand Up @@ -9,24 +9,15 @@ Arduino boards senses the environment by receiving inputs from many sensors, and

![The Arduino UNO.](assets/BoardAnatomy.svg)

- 1. **Digital pins** Use these pins with digitalRead(), digitalWrite(), and analogWrite(). analogWrite() works only on the pins with the PWM symbol.

- 2. **Pin 13 LED** The only actuator built-in to your board. Besides being a handy target for your first blink sketch, this LED is very useful for debugging.

- 3. **Power LED** Indicates that your Arduino is receiving power. Useful for debugging.

- 4. **ATmega microcontroller** The heart of your board.

- 5. **Analog in** Use these pins with analogRead().

- 6. **GND and 5V pins** Use these pins to provide +5V power and ground to your circuits.

- 7. **Power connector** This is how you power your Arduino when it's not plugged into a USB port for power. Can accept voltages between 7-12V.

- 8. **TX and RX LEDs** These LEDs indicate communication between your Arduino and your computer. Expect them to flicker rapidly during sketch upload as well as during serial communication. Useful for debugging.

- 9. **USB port** Used for powering your Arduino UNO, uploading your sketches to your Arduino, and for communicating with your Arduino sketch (via Serial. println() etc.).

- 10. **Reset button** Resets the ATmega microcontroller.
1. **Digital pins** Use these pins with digitalRead(), digitalWrite(), and analogWrite(). analogWrite() works only on the pins with the PWM symbol.
2. **Pin 13 LED** The only actuator built-in to your board. Besides being a handy target for your first blink sketch, this LED is very useful for debugging.
3. **Power LED** Indicates that your Arduino is receiving power. Useful for debugging.
4. **ATmega microcontroller** The heart of your board.
5. **Analog in** Use these pins with analogRead().
6. **GND and 5V pins** Use these pins to provide +5V power and ground to your circuits.
7. **Power connector** This is how you power your Arduino when it's not plugged into a USB port for power. Can accept voltages between 7-12V.
8. **TX and RX LEDs** These LEDs indicate communication between your Arduino and your computer. Expect them to flicker rapidly during sketch upload as well as during serial communication. Useful for debugging.
9. **USB port** Used for powering your Arduino UNO, uploading your sketches to your Arduino, and for communicating with your Arduino sketch (via Serial. println() etc.).
10. **Reset button** Resets the ATmega microcontroller.

The text of the Arduino getting started guide is licensed under a [Creative Commons Attribution-ShareAlike 3.0 License](http://creativecommons.org/licenses/by-sa/3.0/). Code samples in the guide are released into the public domain.
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