AEK-R2:-Functional-Test-for-Battery,-DC-Motor-and-Servo-Motor [HC-1386]

content/Education and Kits/Engineering Kit/AEK-R2-functional-test-for-battery-servo-motor-and-DC-motor.md

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+---
+title: "AEK R2: functional test for battery, servo motor, and DC motor"
+id: 
+---
+
+Learn how to determine if specific components in the Arduino Engineering Kit Rev2 (AEK R2) are functioning correctly or if they are faulty.
+
+In this article:
+
+- [Before running the tests](#before-running-the-tests)
+- [Check the firmware version on the Nano Motor Carrier](#check-firmware-version-and-battery-voltage)
+- [Check the voltage on the Li-ion battery](#check-firmware-version-and-battery-voltage)
+- [Test the servo motors](#test-the-servo-motors)
+- [Test the DC motors](#test-the-dc-motors)
+
+---
+<a id="before-running-the-tests"></a>
+
+## Before running the tests
+
+1. Install the [ArduinoMotorCarrier library](https://www.arduino.cc/reference/en/libraries/arduinomotorcarrier/). (See [Add libraries to Arduino IDE](https://support.arduino.cc/hc/en-us/articles/5145457742236-Add-libraries-to-Arduino-IDE) for instructions)
+2. Connect the Nano 33 IoT board to the Nano Motor Carrier.
+
+    ![The Nano 33 IoT board plugged to the Arduino Nano Motor Carrier](img/Nano33IoT-plug.png)
+
+3. Connect the Li-ion battery.
+4. Turn on the power switch on the Nano Motor Carrier.
+5. Connect the Nano 33 IoT to your computer.
+
+---
+
+<a id="check-firmware-version-and-battery-voltage"></a>
+
+## Check the firmware version and battery voltage
+
+You can check the Nano Motor Carrier firmware version and/or the voltage of the Li-ion battery by following the steps below:
+
+1. Follow the instructions in [Before running the tests](#before-running-the-tests).
+2. In Arduino IDE, go to **File > Examples > ArduinoMotorCarrier > NanoMotorCarrier** and select the **Battery_Charging** sketch.
+3. Enable `while (!Serial);` in line 10.
+4. Open the Serial Monitor and set the baud rate to 115200.
+5. Upload the sketch.
+6. You should now be able to see information about the Nano Motor Carrier's firmware version and the battery voltage printed on the Serial Monitor.
+
+    ![The Arduino Serial Monitor with the Nano Motor Carrier's firmware version and the battery voltage printed](img/AEK-R2-Firmware-Battery-test.png)
+
+---
+
+<a id="test-the-servo-motors"></a>
+
+## Test the servo motors
+
+1. Follow the instructions in [Before running the tests](#before-running-the-tests).
+2. In Arduino IDE, go to **File > Examples > ArduinoMotorCarrier > NanoMotorCarrier** and select the **ServoTest** sketch.
+3. Connect the servo motor to one of the servo ports on the Nano Motor Carrier.
+
+    ![Nano Motor Carrier with Nano 33 IoT, servo motor, and Li-ion battery plugged](img/AEK-R2-Servo-plugged-test.png)
+
+4. Comment out or delete `#include <Arduino_PMIC.h>` in line 1 since this library is not necessary for this test.
+5. Comment out or delete `if (!PMIC.enableBoostMode()) {` in line 35, `Serial.println("Error enabling Boost Mode");` in line 36, and `}` in line 37, since these are not necessary for this test.
+6. Upload the sketch.
+
+Once done, the servo motor should loop continuously between clockwise and counterclockwise motion.
+
+---
+
+<a id="test-the-dc-motors"></a>
+
+## Test the DC motors
+
+1. Follow the instructions in [Before running the tests](#before-running-the-tests).
+2. In Arduino IDE, go to **File > Examples > ArduinoMotorCarrier > NanoMotorCarrier** and select the **DCMotorTest** sketch.
+3. Connect the DC motor to one of the motor ports on the Nano Motor Carrier. (Tip: To test the motors without the Rover moving, place it on an elevated object so its wheels can spin freely)
+
+    ![Rover placed on an elevated object with its wheels spinning freely](img/AEK-R2-Rover-Spinning-test.png)
+
+4. Upload the sketch.
+
+Once done, the DC motor should loop between the duty cycles from -100 to 100 and back again, and the values printed in the Serial Monitor.
+
+![The Arduino Serial Monitor with the Motor Duty Cycle printed](img/AEK-R2-DC-Motor-test.png)