since the QMC6310 has been discontinued, we are not going to make it in production.
Sensor breakout using QST's QMC6310 3-Axis hall sensor, supporting Adafruit STEMMA QT / Sparkfun Qwiic system. You can use same code for QMC5883L without heavy modification. All you need to do is changing I2C address to 0x3C. You should power this board 3.3V, not 5V. Higher voltages will damage the board.