Problem with Adafruit DRV8833 and Arduino Nano rp2024

Hardware Nano Family Nano RP2040 Connect
1

Hi there

I am using the DRV8833 with an Arduino Nano rp2040 to control two DC motors.
The wiring looks like this:

Vmotor - 9V
GND - ground
SLP - GPIO12
AIN1 - GPIO26
AIN2 - GPIO27
AIN1 - GPIO28
BIN2 - GPIO29

PXL_20241105_210250323
PXL_20241105_210250323800×451 109 KB

The code I am using is the following:

#define RIGHT_FORWARD 26
#define RIGHT_BACKWARD 27
#define LEFT_FORWARD 28
#define LEFT_BACKWARD 29
#define SLP 12

void setup() {
  Serial.begin(9600);
  Serial.println("Stepper test!");
  pinMode(LED_BUILTIN, OUTPUT);
  pinMode(RIGHT_FORWARD, OUTPUT);
  pinMode(RIGHT_BACKWARD, OUTPUT);
  pinMode(LEFT_FORWARD, OUTPUT);
  pinMode(LEFT_BACKWARD, OUTPUT);
  pinMode(SLP, OUTPUT);
}

void loop() {
  Serial.println("loop");
  
  digitalWrite(LED_BUILTIN, HIGH);
  digitalWrite(SLP, HIGH);
  digitalWrite(RIGHT_FORWARD, HIGH);
  digitalWrite(RIGHT_BACKWARD, LOW);
  
  delay(1000);
  digitalWrite(LED_BUILTIN, LOW);
  delay(200);

  digitalWrite(LED_BUILTIN, HIGH);
  digitalWrite(RIGHT_FORWARD, LOW);
  digitalWrite(RIGHT_BACKWARD, LOW);

  delay(1000);
  digitalWrite(LED_BUILTIN, LOW);
  delay(200);

  digitalWrite(LED_BUILTIN, HIGH);
  digitalWrite(RIGHT_FORWARD, HIGH);
  digitalWrite(RIGHT_BACKWARD, LOW);

  delay(1000);
  digitalWrite(LED_BUILTIN, LOW);
  delay(200);
}

The LED is blinking which indicates the program does run.
Also when I measure the GPIO26 I do get the expected 0 or 3.3v and on the GPIO12 I get the expected 3.3v.

But in the AOUT1 I would expect to see some voltage that goes to the DC motors, but there is nothing.

Does anyone have an idea why?
I did change the DRV (i have 4 of them, same problem with all of them) and I did change the Arduino, but nothing helps..

2

The battery might not have the power to drive two dc motors. Measure the battery voltage. Provide an accurate wiring drawing.

3

I am not sure what solved it but all of a sudden it works..