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Merge pull request #2996 from caternuson/drv8833_examples
Add DRV8833 code examples
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‎.github/workflows/arduino_cron.yml

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git clone --quiet https://github.com/adafruit/HID /home/runner/Arduino/libraries/HID_Project
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rm -rf /home/runner/Arduino/libraries/ArduinoHttpClient
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git clone --quiet https://github.com/arduino-libraries/ArduinoHttpClient.git /home/runner/Arduino/libraries/ArduinoHttpClient
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git clone --quiet https://github.com/pschatzmann/ESP32-A2DP /home/runner/Arduino/libraries/ESP32-A2DP
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git clone --quiet https://github.com/pschatzmann/arduino-audio-tools /home/runner/Arduino/libraries/arduino-audio-tools
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- name: test platforms
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run: python3 ci/build_platform.py ${{ matrix.arduino-platform }}

‎Adafruit_DRV8833/arduino/drv8833_onoff/.uno.test.only

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‎Adafruit_DRV8833/arduino/drv8833_onoff/drv8833_onoff.ino

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// SPDX-FileCopyrightText: 2025 Carter Nelson for Adafruit Industries
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//
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// SPDX-License-Identifier: MIT
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// Basic ON/OFF control of DC motor via DRV8833
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#define AIN1 5
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#define AIN2 6
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#define SLP 7
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void setup() {
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Serial.begin(115200);
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Serial.println("Adafruit DRV8833 DC Motor Example - ON/OFF");
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// configure pins
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pinMode(AIN1, OUTPUT);
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pinMode(AIN2, OUTPUT);
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pinMode(SLP, OUTPUT);
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// enable DRV8833
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digitalWrite(SLP, HIGH);
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}
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void loop() {
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//
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// FORWARD
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//
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Serial.println("Forward");
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digitalWrite(AIN1, HIGH);
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digitalWrite(AIN2, LOW);
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delay(1000);
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//
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// REVERSE
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//
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Serial.println("Reverse");
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digitalWrite(AIN1, LOW);
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digitalWrite(AIN2, HIGH);
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delay(1000);
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}

‎Adafruit_DRV8833/arduino/drv8833_pwm/.uno.test.only

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‎Adafruit_DRV8833/arduino/drv8833_pwm/drv8833_pwm.ino

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// SPDX-FileCopyrightText: 2025 Carter Nelson for Adafruit Industries
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//
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// SPDX-License-Identifier: MIT
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// PWM speed control of DC motor via DRV8833
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#define AIN1 5
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#define AIN2 6
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#define SLP 7
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void setup() {
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Serial.begin(115200);
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Serial.println("Adafruit DRV8833 DC Motor Example - PWM");
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// configure pins
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pinMode(AIN1, OUTPUT);
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pinMode(AIN2, OUTPUT);
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pinMode(SLP, OUTPUT);
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// enable DRV8833
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digitalWrite(SLP, HIGH);
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}
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void loop() {
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//
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// FORWARD
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//
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Serial.println("Forward");
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digitalWrite(AIN2, LOW);
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// ramp speed up
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Serial.println(" ramping up");
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for (int duty_cycle=0; duty_cycle<256; duty_cycle++) {
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analogWrite(AIN1, duty_cycle);
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delay(10);
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}
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// ramp speed down
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Serial.println(" ramping down");
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for (int duty_cycle=255; duty_cycle>=0; duty_cycle--) {
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analogWrite(AIN1, duty_cycle);
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delay(10);
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}
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//
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// REVERSE
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//
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Serial.println("Reverse");
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digitalWrite(AIN1, LOW);
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// ramp speed up
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Serial.println(" ramping up");
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for (int duty_cycle=0; duty_cycle<256; duty_cycle++) {
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analogWrite(AIN2, duty_cycle);
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delay(10);
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}
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// ramp speed down
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Serial.println(" ramping down");
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for (int duty_cycle=255; duty_cycle>=0; duty_cycle--) {
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analogWrite(AIN2, duty_cycle);
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delay(10);
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}
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}

‎Adafruit_DRV8833/arduino/drv8833_stepper/.uno.test.only

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‎Adafruit_DRV8833/arduino/drv8833_stepper/drv8833_stepper.ino

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// SPDX-FileCopyrightText: 2025 lady ada for Adafruit Industries
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//
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// SPDX-License-Identifier: MIT
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#include <Stepper.h>
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// change this to the number of steps on your motor
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#define STEPS 200
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// create an instance of the stepper class, specifying
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// the number of steps of the motor and the pins it's
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// attached to
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Stepper stepper(STEPS, 4, 5, 6, 7);
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void setup()
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{
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Serial.begin(9600);
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Serial.println("Stepper test!");
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// set the speed of the motor to 30 RPMs
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stepper.setSpeed(60);
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}
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void loop()
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{
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Serial.println("Forward");
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stepper.step(STEPS);
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Serial.println("Backward");
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stepper.step(-STEPS);
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}

‎Adafruit_DRV8833/circuitpython/onoff/code.py

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# SPDX-FileCopyrightText: 2025 Carter Nelson for Adafruit Industries
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#
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# SPDX-License-Identifier: MIT
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import time
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import board
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import digitalio
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# Configure pins
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AIN1 = digitalio.DigitalInOut(board.D5)
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AIN2 = digitalio.DigitalInOut(board.D6)
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SLP = digitalio.DigitalInOut(board.D7)
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AIN1.switch_to_output()
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AIN2.switch_to_output()
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SLP.switch_to_output()
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# Enable DRV8833
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SLP.value = True
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# Loop forever
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while True:
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#
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# FORWARD
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#
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print("Forward")
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AIN1.value = True
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AIN2.value = False
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time.sleep(1)
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#
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# REVERSE
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#
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print("Reverse")
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AIN1.value = False
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AIN2.value = True
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time.sleep(1)

‎Adafruit_DRV8833/circuitpython/pwm/code.py

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# SPDX-FileCopyrightText: 2025 Carter Nelson for Adafruit Industries
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#
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# SPDX-License-Identifier: MIT
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import time
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import board
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import digitalio
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import pwmio
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# Configure pins
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AIN1 = pwmio.PWMOut(board.D5, frequency=2000)
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AIN2 = pwmio.PWMOut(board.D6, frequency=2000)
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SLP = digitalio.DigitalInOut(board.D7)
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SLP.switch_to_output()
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# Enable DRV8833
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SLP.value = True
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# Loop forever
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while True:
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#
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# FORWARD
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#
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print("Forward")
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AIN2.duty_cycle = 0
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print(" ramping up")
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for duty_cycle in range(0, 65536, 100):
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AIN1.duty_cycle = duty_cycle
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time.sleep(0.01)
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print(" ramping down")
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for duty_cycle in range(65535, -1, -100):
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AIN1.duty_cycle = duty_cycle
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time.sleep(0.01)
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#
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# REVERSE
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#
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print("Reverse")
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AIN1.duty_cycle = 0
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print(" ramping up")
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for duty_cycle in range(0, 65536, 100):
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AIN2.duty_cycle = duty_cycle
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time.sleep(0.01)
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print(" ramping down")
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for duty_cycle in range(65535, -1, -100):
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AIN2.duty_cycle = duty_cycle
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time.sleep(0.01)

‎Factory_Tests/Feather_RP2040_Adalogger/Feather_RP2040_Adalogger.ino

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//
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// SPDX-License-Identifier: MIT
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#include <SdFat.h>
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#include <SPI.h>
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#include "Adafruit_TestBed.h"
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#include <Adafruit_TestBed.h>
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SdFat SD;
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SdFile file;

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