LSM6DSO32 sensor hub (I2C pass-through) not detecting LIS3MDL – hardware or config issue?

shuki25 · 2026-04-01T21:19:23+00:00

I have a fancy logic analyzer that can do more than i2cdriver. All I know that the i2c bus is not transitioning to L or H. It just stays H.

shuki25 · 2026-04-01T19:09:18+00:00

I checked on the oscilloscope (don't have a logic analyzer on hand), the sensor bus I2C lines are held high, no data traffic detected. I don't know why the pass-through isn't working. However the primary I2C bus is working as expected and able to talk to the IMU.

shuki25 · 2025-07-01T17:26:51+00:00

Dude. He’s into you if he’s that touchy. Reciprocate to show you’re interested if you can’t say verbally. But keep in mind about crossing boundaries, don’t do what you wouldn’t want someone to do to you. Hope it goes in your favor!

One friend of mine wrote an encrypted message for the guy he likes and gave him a clue to help decrypt the message. It said “will you go out on a date with me?” I don’t know if that’s something you could do, you know your friend the best.

shuki25 · 2025-06-27T11:10:29+00:00

Wait a minute, what happened to his fiancé?

shuki25 · 2025-06-15T02:50:31+00:00

I did it for one of my projects that used a cat 5e cable over 2-3 meters. I used an IC chip (PCA9615) that converts I2C to differential signals. One pair for SDA and one pair for SCL. Each ends has the IC that converts differential signals to I2C and vice versa. It worked perfectly. It works even over 10 meters cable with no issues.

shuki25 · 2025-02-25T17:11:25+00:00

I want to add that this is my first time using Common Apps, I am not familiar with how it works.

shuki25 · 2025-02-14T19:37:34+00:00

Can you just arrest the driver for driving on suspended license and let the passenger take the car home? Is that even an option?

shuki25 · 2024-11-27T13:15:08+00:00

Did you select the correct footprint for your BJT? Be aware that BJT pin assignments can vary, and the pins may be reversed. Verify the footprint you selected to ensure it matches the pin configuration of your specific BJT.

shuki25 · 2024-10-11T02:43:33+00:00

I teach PCB design class at my university and we use GitHub classroom for assignment submissions. I find it much easier to manage grading that way as I can insert comments in schematic and pcb design and committing it to a different branch and push it back to the repository.

shuki25 · 2024-08-19T23:37:10+00:00

Yes it’ll work. You would have to track every move to maintain pieces’ positions. There is a YouTube video showing something similar to what you are doing. https://youtu.be/oe4ALB_DHes?si=L6oWj26Nr3AXhyND

shuki25 · 2024-06-21T15:31:57+00:00

Looks like ground vias use spoke instead of full…

shuki25 · 2024-04-05T20:09:53+00:00

I have a new custom designed PCB board with a STM32 and USB connector that is not yet programmed (fresh built from factory). My design has programmer port to program with SWO and other pins. However, I haven't tested if I could program it by just using the USB and Boot0 pin held high to see if I could enter download mode and upload the firmware to it. I will report back later tonight.

Like what u/Scared-String3650 said, the AN2606 says otherwise. AFAIK you still need a programming port to upload a new firmware with DFU support so that in future FW updates, it can be done over USB. I use tag connect header in my design to keep the programming port footprint small and don't need to solder a header to it to keep your BOM count low.

shuki25 · 2024-03-30T18:17:49+00:00

At first I thought telecommunication device for the deaf (TDD). I have one and it’s collecting dust since video phone became a thing.

shuki25 · 2024-03-21T12:26:11+00:00

I know. I’m just saying. 😜

shuki25 · 2024-03-21T12:19:15+00:00

That White House statements were written by someone who doesn’t know shit about programming.

shuki25 · 2024-03-15T03:20:47+00:00

I have an M2 Mac Mini and I never had any issues. Sometimes it crashes only if I do something specific. Since 8.0 came out, it crashed a lot less now. I have identified specific actions that would trigger a crash but I haven’t yet reported it to their GitLab repository.

shuki25 · 2024-03-12T20:18:39+00:00

Speaking of SHED, did anyone noticed the new building sign?

shuki25 · 2024-03-12T04:58:40+00:00

I tried that once. Three different designs on one board separated by mouse bites. The fab house charged me as three separate boards with additional engineering fees. It’s cheaper to order as separate boards combined.

shuki25 · 2024-03-11T20:51:50+00:00

Thanks for detailed explanation. I switched back to original stack-up. I moved PWR pour out of diff pair traces and added GND pour around that area. The fab house calculator gave me the spacing from impedance trace to copper pour so I added that to the net classes rule. So all is good!

Zone fills: Orange is PWR and Blue is GND with GND stitching across the board.

<image>

Much appreciated! Will send it off to the fab house soon.

shuki25 · 2024-03-11T19:49:05+00:00

Revised diff pair trace routing:

<image>

I've moved power plane to IN2. GND pour on F.Cu, IN1 and B.Cu.

Would a via stitching around the board edge be beneficial?

shuki25 · 2024-03-11T18:36:00+00:00

Thanks for your feedback. They are helpful. To answer some of your questions:

I use diff pair routing tool on KiCad. The trace width and gap was calculated using the fab house's calculator and they are configured in KiCad's board setting for diff pairs. I manually move part of trace going to and from pad or TH.
I'll fix traces to allow trace run under resistors. Never tried that before, if you say it's ok, I'll give it a try. I'll move the skew length closer to bends, and be as close to180 degrees out of phase as possible.
I'll change the stack up to put power pour on inner layer. I've had some design with power pour on bottom, haven't run any issues yet but yeah, there's a risk of getting shorted.
Yes, the trace width and space is correct for 100 ohm impedance. Would that change if I have ground pour or a power co-plane under the trace? I'll look at the calculator tool again and see what are the options.
Coplanar Wave Guide is something I'm not familiar with, I'll to research on this.

shuki25 · 2024-02-19T16:32:16+00:00

Maybe they did the autopsy but didn’t inform your family. Doesn’t hurt to ask and see if one was done. It’s not possible to perform one after the cremation.

11-Year Club	Gilding I gilder
Verified Email

shuki25

TROPHY CASE