# Drum Motor
How to connect and code for a nano or ESP32 to control the motor.
[](https://skywiki.coffee/uploads/images/gallery/2025-04/image.png)
| Motor Wire | Arduino |
|---|
| Blue (PWM) | D6 |
| White (DIR) | D7 |
| Red (V+) | 12–24V |
| Black (GND) | Shared GND with Arduino |
### 1. Add These Pin Definitions at the Top:
const int drumPwmPin = 6; // PWM pin (connect to Blue wire)
const int drumDirPin = 7; // Direction pin (connect to White wire
### 2. Add These to `setup()`:Make sure these lines are inside your `setup()` function
### 3. Replace Your `handleDRUM()` With This Version:
void handleDRUM(uint8\_t value) {
if (value > 100) value = 100; // Clamp value to 100
int pwmValue = map(value, 0, 100, 0, 255); // Scale 0-100 to 0-255
if (value != 0) {
digitalWrite(drumDirPin, HIGH); // Set motor direction (HIGH = CW)
analogWrite(drumPwmPin, pwmValue); // Apply PWM speed
setValue(&sendBuffer\[drumByte\], value); // Update protocol buffer
} else {
analogWrite(drumPwmPin, 0); // Stop motor
setValue(&sendBuffer\[drumByte\], 0);
}
lastEventTime = micros();
}