[SOLVED]I2c scanner error 1/2aa

#1

i used i2c scanner example with mpu9250(GY-9250), but in first try it shows me that:
“Scanning…
No I2C devices found”
and then it gave me all i2c adresses, but with GY-91 it shows actual i2c adress

#2

hi,

Which cubecell are you using?

Could you check your I2C connect pins?

#3

1/2 aa node, already checked, and i try it on arduino uno, and it works

#4

now i’ve tried mpu9255 and it still not work…

#5

so i also tried to pullup 4.7kOhm resistors with 3.3v and SCL and SDA pins like in the library said

#6

could you show your pin connect picture?

we have tested the code and it works fine.

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#7

Like in your picture, but i have another mpu

AD280-2
AD280-2.jpg600×600 105 KB

#8

actualy purple one found in scanner but left and right of blues no

b351cd29-e55d-450a-afbc-8e2585b8f7bf
b351cd29-e55d-450a-afbc-8e2585b8f7bf.jpg960×1280 120 KB

#9

i’ve connect it to i2c pins SCL and SDA (39 and 40 #pins)

#10

It seems that you are not using the sensor made by us. The sensor we make is no problem.

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图片.jpg1125×387 123 KB

#11

Yes, where i can buy some of yours sensors?

#12

and i fix it, the fing is in using new 1/2 aa, because old one is one of my testing, so maybe pins are damaged or something else…

#13

FSYNC Ground reference Frame synchronization digital input. Connect to GND if unused.

nCS should connect to the build in LDO output (tpy. 3.3v)

image
image.png1265×659 122 KB

#14

Maybe you can make a new order on our website.

here is link of the sensors:https://heltec.org/product/capsule-sensor/