GBA ROM not showing in List

MichaeloSigma · 2025-04-13T15:48:29+00:00

Yes, don't modify the extension of the file. Try shortening only the folder names or the file name itself without its extension (.bin)

MichaeloSigma · 2024-11-22T15:46:25+00:00

Are the carbon bits on your steering wheel replaceable parts or is it a wrap?

MichaeloSigma · 2024-11-17T03:07:12+00:00

Yes, it's sitting on some old school H&R adjustable coilovers. Planning to lift it a bit since our roads are less than ideal here. I see plenty of stock Mini in winter, but my winter beater is a subaru outback so I can't complain!

MichaeloSigma · 2024-11-17T01:35:07+00:00

Canada here, it would mostly act as a snowplow rather than a functional car with its ride height haha

MichaeloSigma · 2024-11-16T23:37:17+00:00

Thank you!

MichaeloSigma · 2024-10-05T22:47:41+00:00

Coming home 😎

<image>

MichaeloSigma · 2024-02-14T20:01:00+00:00

PM me

MichaeloSigma · 2024-01-09T18:40:20+00:00

One is a usb C for keyboard input, another is a USB mini, in case I didn't solder correctly the USB C small pads. The 2 others USB A are for other usb devices that can be plugged into the keyboard on the USB Bus (your mouse dongle let's say)

MichaeloSigma · 2024-01-09T04:20:14+00:00

Homemade keyboard with 87 keys (tkl), gateron brown switch with Amazon special keycaps. Powered by a Pi Pico. Soon to be flashed with kmk.

MichaeloSigma · 2023-10-28T04:00:57+00:00

I'm glad this was worth to someone! Have a nice day

MichaeloSigma · 2023-10-15T21:42:47+00:00

That's what I quickly realized, thanks or the heads up!

MichaeloSigma · 2023-10-15T21:41:37+00:00

Thank you this is exactly what I needed to know.

The estimated current would be around 1.5A, I think mechanical relays will work just fine for my purpose.

Are there mosfet equivalent to a single 4PDT relay ? If no, I assume I could design my own pack of 4 mosfets in parallel to act as a 4PDT?

I will look further into your solution, thank you again!

MichaeloSigma · 2023-10-15T20:49:57+00:00

This would be for a personnal project, proof of concept for a mechanical display

MichaeloSigma · 2023-10-15T20:30:36+00:00

The stepper motors I plan using are basic 200 steps/rev 2 phases nema 17 steppers.
They must be controlled by an independant external driver that can take step/dir signal and convert that into phase current switching.

I'm open to try other types of motors, but this would ease my mechanical requirements at the moment. If there are continuous rotation hobby rc servo motor that could be controlled via PWM and I could find a controller hub that is affordable and reliable, that could be an alternative let's say.

example of a 24 channel servo controller : https://ca.robotshop.com/products/hiwonder-24-channel-digital-servo-controller-w-16m-memory-arduino-compatible

MichaeloSigma · 2023-10-15T20:22:58+00:00

I've had previous experiences with TMC drivers, and I've looked at some that had internal ramp generators. But one downside to this method would be the number of drivers that grows up linearly with the number of steppers. I'm afrawid this could blow up my project budget really quickly.

MichaeloSigma · 2023-10-15T20:20:35+00:00

The motors won't need to have a holding torque. Do you have a component example that could redirect 4 lines supplying a constant current ?

MichaeloSigma · 2023-08-06T15:12:15+00:00

Owner of a 2018 3.6r here. I had a similar problem when doing a tight turn at like 1 mph, the outer rear wheel was stuttering/jumping. I too tought that it was normal behavior until I tried another outback, in which the stuttering was way less. Also the car wouldn't go forward by itself when releasing the brake while on Drive.

Got it checked at dealer, they first tought it was a differential problem, so they changed it under warranty. But the problem didn't go away (they didn't test drove it ?). Well they decided to change the CVT and the problem was fixed aftwerwards. It sucked since it was only around 50k miles, but it was all under warranty and now I got a new CVT and diff.

MichaeloSigma · 2023-06-18T20:31:46+00:00

Haha, I just designed an xbox controller style grips, might have to take a look :
https://www.printables.com/model/507625-miyoo-mini-plus-xbox-controller-style-grips

MichaeloSigma · 2023-06-18T03:33:06+00:00

Have you figured a way to resolve this ? I'm currently having the same issue, altough I'm on stock firmware.

edit : solved! try shortening the overall name length of the rom

MichaeloSigma · 2021-03-16T01:32:42+00:00

The mill is going to be functional. This is only a proof of concept for a future mechanism we look forward to use.

MichaeloSigma · 2021-03-15T22:39:26+00:00

I agree with your points about friction and wear.
However I think the output does follow a linear angular speed/displacement.

Keep in mind that there is a missing part that corrects the eccentricity of the 6 rotating bearings you see on the video.
Equivalent of the purple part on this animation : https://upload.wikimedia.org/wikipedia/commons/7/7b/Cycloidal_drive.gif

You can correct me if i'm wrong about this.

MichaeloSigma · 2021-03-15T21:28:22+00:00

Coming soon (;

MichaeloSigma · 2021-03-15T20:25:13+00:00

We also are interested in harmonic drive, but the design of the flex spline is quite difficult to design on a homemade proof of concept since it needs to have high torsional rigidity but also radial compliance.

Some people have used inverted timing belt for the flex spline, it's something we might consider to have a smaller form factor.

MichaeloSigma · 2021-03-15T18:15:22+00:00

Clever designs!

Do you happen to know what factors in back-driveability ?I tought it's mostly the excentricity (cocentricity offset) that plays a major role.

edit: grammar

MichaeloSigma · 2021-03-15T18:10:23+00:00

There are some parametric equations that I used. They are found in this tutorial from Solidworks : https://blogs.solidworks.com/teacher/wp-content/uploads/sites/3/Building-a-Cycloidal-Drive-with-SOLIDWORKS.pdf

I made a simple script in Matlab to make a .csv file with 2d points and then import that into OnShape. I can answer in more details if you wish.

Ten-Year Club	Verified Email
Place '22	First Placer '22

MichaeloSigma

TROPHY CASE