Hello, I have a i2c bus with three components one of them being gy-273 breakeout boat with the hmc5883l 3 Axis Magnetometer Sensor.
I was getting good readings from all three for about a hour, when the hole system suddenly freezed and I have not been able to get readings since as long as the gy-273 is attached.
In contrast with the other components in my project this one was attached to the 3.3 power source on board and it had its own ground pin there to.
I started to measure the output voltage on the i2c bus with the other two components and its around 5V.
Measuring on the isolated gy-273 gives me 0.4 on one pin, and 0,7 on the other.
They can all three live together on the bus, but as soon as I ask for a reading from the gy-273 the whole thing freezes.
Its like the gy-273 brings the whole voltage level down on the bus to a point where it stops working.
Any ideas on what happent and if i can fix it?
-- Regards Andreas