BNO055 reading problem

Using Arduino Sensors
1

Hello, I bought this type of BNO055 https://techfun.sk/produkt/bno055-snimac-9-osi-akcelerometer-gyroskop-magnetometer/ and Arduino Nano.

I found on the internet, that I need to connect VCC to 3,3V, GND to GND, ATX (its SDA) to A4, LRX (its SCL) to A5 and I2C to the GND. I also wired S0 and S1 to "-" and I solder an crystal.

My problem is, that when I start some example from adafruit BNO055 (for example "read all data") and upload it, I see on the Serial Monitor just:

"21:41:49.757 -> Orientation Sensor Test
21:41:49.757 ->
21:41:50.611 -> Ooops, no BNO055 detected ... Check your wiring or I2C ADDR!"

So I found on the internet code named i2c scanner. The result is just:
"21:43:38.708 -> Scanning...
21:43:38.708 -> No I2C devices found"

I would like to ask you for helping me. Thanks a lot.

2

try sensor own power source, not from Arduino.

1 Like
3

The BNO055 I2C implementation violates the I2C protocol in some circumstances. This causes it not to work well with certain chip families.

probably you can use it with UART interface

1 Like
4

I will try it today, thanks. Is there some special steps when I want to use UART? I know I need to solder S0 and S1 differently and some pins becomes RX and TX so I need to plug those pins to specific pins in Arduino (D1 and D0). Are there some other special steps?

5

if sensor need high speed you can use software serial on near to any other pins.
i think to switch the mode is pin "I2C" should be connected to other power rail.

6

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