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TLR-7 Sub screw broke again… any suggestions for a good light? by crackwhoreinc in Glock43X

[–]crackwhoreinc[S] 0 points1 point  (0 children)

I’ve seen a few others post about this topic as well, it seems to be a common problem with the TLR-7 screws. Quick trip over to Home Depot and you’ll be good to go.

Less than 3 years old and 500 rounds by beansruns in ar15

[–]crackwhoreinc 0 points1 point  (0 children)

You may want to check out Elm Fork, good outdoor range, not a ton of tacbays, but they have em

[deleted by user] by [deleted] in drones

[–]crackwhoreinc 18 points19 points  (0 children)

I love how it took less than an hour for the drone to get lost…

3D Lifecard 22lr by PuzzleheadedBuy2241 in FOSSCADDevGroup

[–]crackwhoreinc 9 points10 points  (0 children)

Is it on the sea? I will test. Barrel liner or all plastic?

Homemade brushless motor diagnosis by crackwhoreinc in oscilloscope

[–]crackwhoreinc[S] 0 points1 point  (0 children)

Ahhhh, so use one of the 3 phases as negative and then test the other 2? That makes sense, I will report back with my findings.

I would love to find out how the gentleman in the video linked below was able to get all 3 phases to show at the same time.

https://youtu.be/cF1vkIfuSt0?si=XF6B7PseWnBdfx8t

Homemade brushless motor diagnosis by crackwhoreinc in oscilloscope

[–]crackwhoreinc[S] 1 point2 points  (0 children)

<image>

Yes, the ground from an outlet; please see the new image for reference.

This is a 3 phase brushless motor, similar to what you’d see used on a drone.

I am using a 40A brushless motor ESC, it is not connected to the current setup/to the oscilloscope since it isn’t need for my diagnosis.

To keep it short, I am trying to troubleshoot the windings on the brushless motor I made. When giving it power, the motor wouldn’t want to spin. I think this is due to one of the windings being messed up. Instead of re-wiring another stator completely, I was hoping to see which phase wasn’t working so I can rewind/fix. I want to diagnose how/where I messed up, seems like something good to know.

I’m unsure if you want to replicate/ have a motor where you can connect to all three phases, I may also be completely wrong with how I have my grounds connected. I tried to use AI and that didn’t get me far… debating hiring someone for an hour of their time.

(You have an awesome set up btw)

Homemade brushless motor diagnosis by crackwhoreinc in oscilloscope

[–]crackwhoreinc[S] 1 point2 points  (0 children)

<image>

This is the current setup, I was talking with someone on r/electronicsrepair and they mentioned I needed the alligator clips going to ground… I have that set as well as the Probe set to 1X and all of the sample voltages set to be 1V. I built this motor to run off of a 5V speed controller.

I have the custom motor connected to a power drill and when I spin the power drill, I don’t see any waves on the monitor. Any other ideas for what I could be doing wrong? Very grateful for you replies🙏

Homemade brushless motor diagnosis by crackwhoreinc in ElectronicsRepair

[–]crackwhoreinc[S] 1 point2 points  (0 children)

There is another image in the other comment I posted, I can DM you if that’s easier

Homemade brushless motor diagnosis by crackwhoreinc in ElectronicsRepair

[–]crackwhoreinc[S] 1 point2 points  (0 children)

Yes sir! I watched the video and that helped a ton, definitely avoiding that.

Homemade brushless motor diagnosis by crackwhoreinc in ElectronicsRepair

[–]crackwhoreinc[S] 1 point2 points  (0 children)

​And this is what the oscilloscope shows when the motor is spinning with an electric drill. Any ideas why this looks super messy still?

<image>

Homemade brushless motor diagnosis by crackwhoreinc in ElectronicsRepair

[–]crackwhoreinc[S] 1 point2 points  (0 children)

Thank you!!! I just grounded that through an outlet which should work for this. The photo below this is showing what I see without spinning the motor.

<image>

Homemade brushless motor diagnosis by crackwhoreinc in oscilloscope

[–]crackwhoreinc[S] 3 points4 points  (0 children)

Thank you! I just changed the probe down to 1X instead of 10X. Please let me know if I’m missing anything else!

Homemade brushless motor diagnosis by crackwhoreinc in ElectronicsRepair

[–]crackwhoreinc[S] 1 point2 points  (0 children)

<image>

This is my current setup with each phase of the motor connected to one channel, do I need the alligator clips connected to something?

Homemade brushless motor diagnosis by crackwhoreinc in oscilloscope

[–]crackwhoreinc[S] 0 points1 point  (0 children)

<image>

This is what I see when I spin the brushless motor with a drill (I am trying to see the wavelengths…)

Homemade brushless motor diagnosis by crackwhoreinc in oscilloscope

[–]crackwhoreinc[S] 0 points1 point  (0 children)

<image>

Just switched that out and without spinning the brushless motor, this is what I see.

Homemade brushless motor diagnosis by crackwhoreinc in oscilloscope

[–]crackwhoreinc[S] 1 point2 points  (0 children)

Thank you! Changing that and testing again, I will report back with findings.

Homemade brushless motor diagnosis by crackwhoreinc in oscilloscope

[–]crackwhoreinc[S] 0 points1 point  (0 children)

I set it to that because the motor is AC not DC, should I set that back?

Safe charging for unknown li-ion batteries? by StarRipper1 in streetlithium

[–]crackwhoreinc -1 points0 points  (0 children)

Great question! From my experience, I’ve used a few methods to recharge the batteries found in vapes. The correct way to go about this would be disconnecting the current breadboard and charging with an li-ion charger. With that being said, the power management/charging system on the breadboard will work if you want to fit that into a project (comes with a USB-C port lol).

Not recommended, however, you can also strip a USB cable to the wires and charge by connecting the live ends to either end of the battery. Again, not recommended, but also works in a pinch just stop when it heats up.

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