from machine import SoftI2C, Pin
import time

# Use your specific connections
i2c = SoftI2C(sda=Pin(16), scl=Pin(17), freq=100000)

print("Scanning I2C Bus on GP16/17...")
devices = i2c.scan()

if len(devices) == 0:
    print("No I2C devices found! Check your wiring and VCC/GND.")
else:
    print(f"I2C devices found: {len(devices)}")
    for device in devices:
        print(f"Decimal address: {device} | Hex address: {hex(device)}")
        if device == 0x1E:
            print(">>> SUCCESS: HMC5883L Magnetometer found!")