Raspberry Pi cannot find accelerometer sensor at I2C address Moderators: adafruit_support_bill, adafruit

[sdl5384]

Hello:

I just had a couple questions for all of you. As of right now I have my Adafruit accelerometer (LIS3DH) hooked up to my Raspberry 4B. I installed CircuitPython as well as the Adafruit packages necessary for the two to communicate. But every time I try to run the code, it tells me nothing cannot be found at either I2C address 0x18 or 0x19. Everything is color coded and hooked up to the proper input and outputs both on the Pi and the breadboard. So I don't understand how it can't be found.

Could any of you please help direct or guide me in terms of what I could possibly be doing wrong? If necessary, I can send you pics on how they're hooked up as well as the source code. I am just trying to use the simpletest python code as a starting point so I can customize it to what I need to do for my project.

Thank you so much all!

S.D.L.

[dastels]

Is I2C enabled? Does i2cdetect see it?

Dave

[sdl5384]

It is enabled but it doesn’t see it. Everything is wired correctly.

[dastels]

You mean i2cdetect doesn't see it?

Can you post clear photos of your wiring? Especially any soldering.

Dave

[sdl5384]

Sure thing.
Should be two photos. Please let me know if I need to send them again in case they didn’t go through.

[dastels]

How about a shot of the soldering on the back of the sensor board?

Dave

[sdl5384]

I haven’t soldered it yet. I don’t want to solder anything unless I know it works. Otherwise I may not be able to savage the sensor after soldering it.
Once it works then I will solder it to make the circuit permanent

[dastels]

That's your problem. You need to solder the header in. If you don't there's no reason to think it will work.

Dave

[sdl5384]

Ok. Once the header is soldered in, do I connect the wires the same way or is there a different way to do it so the circuit is complete?

[dastels]

Your wiring looked ok. You just need to have a solid, reliable electrical connection, and soldering is the best (often only) way to get it. Especially with relatively high speed data lines like I2C or SPI.

Dave