Using a Qwiic Buzzer with a RedBoard Nano

Qwiic System
1

I have already asked the same question, but it was not resolved.
So I will ask them one by one. Please help me until this situation is resolved.

question 1 : Is it possible to connect Qwiic buzzer to Redboard nano board using qwiic cable?
question 2: if yes to question 1, can I use qwiic buzzer example(from GitHub)?

The reason I ask this question is because, although this buzzer says, “ATtiny84 Pre-programmed with Custom Firmware”,
however, RedBoard Artemis Nano is based on Apollo3.

If it is ‘No’ to question2, please tell me how to use the buzzer in Apollo3 too.

2

The root cause is clockstretching which an ATtiny84 does (and some other devices). about 3 years ago I did a deep-dive on this issue. In attached document a write-up with detailed information.
The short answer: The way to get the scanner to work correctly with an Apollo3 is a small change in the sketch example5
change on line 107 /108 :

    Wire.beginTransmission(address);
    error = Wire.endTransmission();

to

    Wire.beginTransmission(address);
    Wire.write(0x21);    // add writing a dummy byte
    error = Wire.endTransmission();

I2C_clock_stretch.pdf (1016.1 KB)

1 Like
3

Thanks paulvha~!