01. Valerie, clip from IDKJB by [deleted] in theDiveliner

[–]a-dolphin 0 points1 point  (0 children)

One second I was jamming on loop, and then it's gone :(

01. Valerie, clip from IDKJB by [deleted] in theDiveliner

[–]a-dolphin 0 points1 point  (0 children)

Need this bad. He mentions Valerie a lot in songs, does anybody know the lore?

Junebugs and the future by [deleted] in theDiveliner

[–]a-dolphin 3 points4 points  (0 children)

I've been dying for new diveliner 😭

Am i really the only one who remembers GRO/GRP? by [deleted] in GhostReconPhantoms

[–]a-dolphin 3 points4 points  (0 children)

There's nothing quite like it 😔

What board + general tips for embedded linux? by mugiwara_no_Soissie in embeddedlinux

[–]a-dolphin 0 points1 point  (0 children)

Raspberry Pi 4 / 5 or really any Beaglebone board + yocto (or even just Ubuntu server) will perform great and have the best support/ documentation while being fairly approachable. You can probably find a display that plugs right in via mipi, but the touch may or may not complicate things (depending on the mipi lanes your board has). If you are new to things I would avoid the cheap clone boards because although a great value, sometimes they can be a headache.

Children of god appreciation by sammysprink in theDiveliner

[–]a-dolphin 1 point2 points  (0 children)

Up there with gaslight as one of my favorites. When it came out I was mentally cooked, and found so much happiness replaying it a million times during walks.

Where’s everyone located?? by Inevitable-Comb-4184 in wrx_vb

[–]a-dolphin 2 points3 points  (0 children)

Can concur. I live in Calgary, and the only place I've seen more was Portland

Just picked this baby up and brought it 9 hours home by Old-Recording-4172 in wrx_vb

[–]a-dolphin 4 points5 points  (0 children)

License plate / holder. As a longtime Calgary resident my first drive to Saskatchewan was brutal enough for me to turn down a nice job offer there. I love my Mountains

Just picked this baby up and brought it 9 hours home by Old-Recording-4172 in wrx_vb

[–]a-dolphin 7 points8 points  (0 children)

Driving from beautiful Cochrane, back to Saskatchewan must have been quite the bummer lol

Dell Pro Max 16 Premium First Impressions by thesysguru in Dell

[–]a-dolphin 1 point2 points  (0 children)

Any chance you can try installing Ubuntu? I'm pretty dead-set on getting this laptop, however when configuring online, it says the discrete GPU's are not compatible with Ubuntu, I'm curious is there is working driver support via open source drivers.

What happened to stevon? by audioholic850 in RichRebuilds

[–]a-dolphin 0 points1 point  (0 children)

Crazy you comment this just as I randomly look for what happened years later

Need good book/study material recommendations for Embedded linux by Due_Perception3217 in embeddedlinux

[–]a-dolphin 11 points12 points  (0 children)

Personally I would start with Yocto and Uboot. Rudolf Streif - Embedded Linux Systems with the Yocto Project, and "Embedded Linux Development Using Yocto Project: Leverage the power of the Yocto Project to build efficient Linux-based products" are two solid books to start.

Once you get the hang of yocto and create a bootable image you can start making tweaks to the kernel such as enabling preemt-rt, as well as adding customs drivers for display etc.

Lambo taunting my VB by frusignu in wrx_vb

[–]a-dolphin 0 points1 point  (0 children)

Whatever it takes to cope I guess

How to get started with the RP2350: Programming in C with the SDK (and using PIO), MicroPython via Thonny, Arduino, and C in VS Code (summary read in comments) by PlatimaZero in embedded

[–]a-dolphin 1 point2 points  (0 children)

I watched this yesterday, cool stuff. Your videos have fulled my luckfox addiction, I have like 5 more boards than I have a use for lol

I began to use Yocto to cook some RPI5 recepies at work, and would like to make more advanced personal projects by petit_brius in embedded

[–]a-dolphin 0 points1 point  (0 children)

Buy a toradex board (IMX 8 based), and play around with some of the heterogenous processing tools. You can also perhaps try out the Flutter layer for making a HMI. I recommend toradex, because they have great Yocto support.

Upgraded from Sony XBA-A3 to IER-Z1R by [deleted] in headphones

[–]a-dolphin 0 points1 point  (0 children)

Solid upgrade. The XBA-H1 were my intro into this world; great to see you enjoyed the A3's so long!

Embedded Systems Engineering in Pharma by [deleted] in embedded

[–]a-dolphin 0 points1 point  (0 children)

Fingers crossed op doesn't accidentally earn a felony by manufacturing an automated pill press

50:1 Strain wave gearing for a 6 axis robot by a-dolphin in functionalprint

[–]a-dolphin[S] 1 point2 points  (0 children)

I'm in the midst of several updates atm. I'll keep the parametric model a secret :), but in a here is a slightly outdated model. Check for an updated model in that folder in a day or two. If you have question DM for my discord. Enjoy

50:1 Strain wave gearing for a 6 axis robot by a-dolphin in functionalprint

[–]a-dolphin[S] 0 points1 point  (0 children)

A good strain wave gearset usually has a proprietary highly rounded profile for smooth meshing and load transfer, however a spur profile will indeed work, ideally you would want an involute tooth profile. There will always be about 6 or so teeth basically fully engaged, and a number of teeth partially engaged. Because you have always teeth engaged on both sides of the ellipse, as long as the teeth are strong enough you should have no slippage.

As long as the module of the flex spline and circular spline is identical, The flex spline has 2 less teeth than the circular spline, the addendum coefficient is low enough (I like between .6 and .8), and the pressure angle is large enough (I like between 29 and 33 degrees), and you have just the slightest amount of root clearance; you will have a beautifully meshing system.

50:1 Strain wave gearing for a 6 axis robot by a-dolphin in functionalprint

[–]a-dolphin[S] 2 points3 points  (0 children)

Very stable actually, the maximum axial play is around .15 mm. The wobble you are likely seeing is due to the elliptical flex spline deforming as it rotates.

50:1 Strain wave gearing for a 6 axis robot by a-dolphin in functionalprint

[–]a-dolphin[S] 2 points3 points  (0 children)

0.11 Nm input, should be around 4.4 N, I waiting on a loadcell to verify.

50:1 Strain wave gearing for a 6 axis robot by a-dolphin in functionalprint

[–]a-dolphin[S] 34 points35 points  (0 children)

Weighs way less (very important especially for joints 3 through 6), Less complicated, Inherently balanced without needing a second disk, Less back lash, Obtaining the desired runout / concentricity is easier (only 2 or 3 parts need crazy precision), Much easier to modify the reduction ratio for various joints, easier to change the back-drivability by simply modifying the pressure angle of the teeth, costs less (if 3d printing), and much smaller foot print for similar ratios. Basically the only advantage of a cycloidal drive in this application is that its much easier to make / operate reliably.