03-28-2023 10:48 AM
I have what was labelled as a HiLetGo sensor that is screened as a BMI610. I am using it on an ESP32 dev board. I have it wired for I2C including ground for SAO and 3.3v for CS. When I run an I2C bus scan this chip responds on address 0x6A. If I unground the SAO pin it changes to 0x6B. This is not the standard address for the chip. Is it likely because I was attempting to use a library and it might have overwritten a register or something? the chip is just black with no discernable markings on it. Or is there a newer version of this chip that has a different address?
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03-28-2023 11:24 AM
BMI160 I2C address should be 0x68(SDO pin low) or 0x69(SDO pin high), refer official data sheet https://www.bosch-sensortec.com/media/boschsensortec/downloads/datasheets/bst-bmi160-ds000.pdf
03-28-2023 10:21 PM
Thank you for confirming that. I looked up some other accelerometers that used addresses 6A and 6B and found LSM6DS3. I quickly took in a library and that sensor is returning data. As I suspected, the cheap sensor was mounted on the wrongly labeled board. I have ordered a real BMI160 from a more reputable source. Hopefully that will come in soon!
I have to say that I am VERY impressed at the Bosch datasheet. The details that are in there are incredibly useful. The quality is above what I have come to expect from component vendors. Thank you.