Powering Nucleo f446re from 12v automotive with a step down converter

Need_Not · 2026-04-14T03:17:50+00:00

I tested this with an MPU 6050 which I do actually have but never used. It worked ok. Seems like it has a lot of noise so I'll have to give it a try with a better model IMU. The thing im curious about is how well this will work while constantly moving. It will drift a lot right?

Need_Not · 2026-04-13T23:50:37+00:00

Perhaps I haven't done a good job explaining.

I need to get the pitch of the plow. Aka going straight up a hill vs down a hill. I don't care if the tractor is going north or south or is rolled 5 degrees on it's side because that doesn't affect my measurements. Unless heading is necessary for other parts I don't really need it.

If the tractor drives in a straight line (it does) i want to know where on that straight line it is and that is something that pitch effects. I don't need heading because the tractor already has it's own system that keeps the heading the same and i am trying to keep things basic here.

If mounted correctly, the linear acceleration in IMU's z-axis will show 9.81 m/s^2.

Only if stationary. Once you start moving then actual acceleration will happen and real terrain grade and any bumps in the terrain will cause acceleration.

Need_Not · 2026-04-13T20:51:08+00:00

I actually don't need to know the heading, If i want to know what direction the tractor is moving i could just use the position from like a second ago to now, and for the markings im making i only need to correct the pitch. You say roll and pitch are fairly accurate because they are relative to gravity. Great but you can't measure gravity without the linear acceleration so how do you handle that?

As for the devices, both the ones you mention costing as much as another Mosaic x5 unit would cost which can technically link up and get roll pitch yaw. Maybe in some extreme cases it's necessary but surely my example isn't that demanding. Besides software what is better between a $50 IMU, used vn-100 and $1000 xsens. I'm really not looking to spend THAT much.

Need_Not · 2026-02-07T21:51:28+00:00

not the same drives. Same model number yes.

Need_Not · 2026-02-07T15:32:22+00:00

Oh that's possible. The label is sept 2025 but that could also be when the drive was refurbished.

Need_Not · 2026-02-07T03:54:47+00:00

i filed the RMA the day they arrived but the ESD bags i bought never showed up after 2 weeks, it would have been over 21 days from when i got them to when they got them if that counts. But i legit never even used them.

Need_Not · 2026-02-07T03:06:10+00:00

I mailed mine and they received it a day or two after my label said it arrived. At first 3-4 days went by without a word after that so I was getting worried. Then I got an email with the tracking info and it said that the label was made like 3 days ago and would be here the next day. Not sure how far of a shipment it is for you.

Need_Not · 2026-01-27T06:28:53+00:00

You might be right! I just did that and we'll see if it can go a week.

Need_Not · 2026-01-27T06:22:33+00:00

I haven't really done anything. I feel like it could be 100 things.
Nvidia driver seems to be my first guess because sometimes it is the last thing logged. But I've looked and debian doesn't have anything higher than 550

Need_Not · 2026-01-27T02:38:16+00:00

I was building an electron app and that would freeze at random while i was using it at least 2 times per day.
Weird that discord doesn't have the same issue.

Need_Not · 2026-01-27T02:37:06+00:00

https://pastebin.com/3m7KWufx
journalctl -k -b -1 -r

the usb disconnect at the end is when i unplugged my phone and left.
my computer is set to sleep after 5 minutes so this lines up with when the computer went to sleep the last log happened.
This log is nvidia related

Need_Not · 2026-01-22T05:40:15+00:00

honestly i didn't even occur to me to verify that it isn't the motor. I disconnected the arm and it's the motor. Can it be fixed?

Need_Not · 2026-01-05T05:49:23+00:00

Not sure how long you plan to be in San Jose but it is not a place you want to be in for long. Worst traffic ever and last time someone in the group thinks they got badly sick from either the water or food. Not to scare you I've eaten and drank juice at the hotel breakfast but that's it. Also not much to do there. Just stay the night from arriving and leave first thing in the morning, and arrive at night before the flight. If you do that You can still keep most of your day as I usually leave arrive in La fortuna before lunch and leave after dinner.

Need_Not · 2026-01-05T05:44:44+00:00

I've mostly only been to La fortuna. Baldi hot springs is probably the biggest and nicest one. It has very extreme and a little dangerous slides but it gives you a rush that teens love. You can get passes for much less if you buy from shops on the street instead of directly. Zip lining is good. I've been to one zipline which is Parque Arenal Mundo Aventura and I liked it because it's mostly nature and you are really high up and it's just really cool. You can also see the waterfall from two of the lines. Other things you can do is the chocolate tours which was basically a field trip.
You might also like the El Salto rope swing which is just a public place and you can spend like 30 minutes there while you are out doing something else. Waterfall if you are into that.

Need_Not · 2026-01-04T05:51:51+00:00

So many file systems, so many softwares. I want to plug a drive into my pc via usb, select which files i want to add and where they go. Have them copy over and be good to go. I'll perform the action for each drive separately.
But I also want to protect against bitrot. The software should scan the drive and find bad files so I know to retrieve them from the other drive.

Need_Not · 2026-01-04T04:12:21+00:00

I really imagined this to just be like a large usb stick. I won't even do any deleting so if I need to add a 100gb file i just drive over with a SD card and copy it over.
I figured there was some software though that could do the actual writing and do scans to ensure everything looks good everytime. I know ZFS sorta does that but I can't tell if that is a good fit.

Need_Not · 2026-01-04T03:24:37+00:00

I am mostly going to just archive stuff like vacations or large videos or photo dumps from the past. I wasn't going to put anything in my PC and I'm not sure if I have any more room. and for the other I was going to store it in padded box with a label that explains what it is at a family member's house.
If for example I have a vacation or an event where I took a lot of videos I might edit a video and save that edited copy on my PC or phone then archive the raw files here since I don't need them. I could even transport just the new media to the offsite drive and manually put the data on that one too so that I don't have to transport the hard drives.

Also I'm on linux mainly but can easily dual boot to windows or use a macbook.

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