Problems

• only when I write map(sensorReading, 0, 900, 100, 1000), my speaker works; if writing map(sensorReading, 200, 900, 100, 1000), it doesnt work.

• Dont really understand: If the tone is playing on the same pin, the call will set its frequency.
• My instrument can’t work

Tone Output Using An Arduino

• If a speaker connects to an output pin running analogWrite(), then getting a changing loudness, but a constant tone. To change the tone, the frequency need to be changed.
• tone()
• ToneMelody