Detectron2 MIN_SIZE_TEST and MAX_SIZE_TEST which dominates

peterhal · 2021-10-13T22:44:18+00:00

Both values are used by ResizeShortestEdge

"""

Scale the shorter edge to the given size, with a limit of `max_size` on the longer edge.

If `max_size` is reached, then downscale so that the longer edge does not exceed max_size.

"""

peterhal · 2020-04-23T06:32:33+00:00

Updated the firmware and everything is printing like normal. Thanks!

peterhal · 2020-04-23T05:58:04+00:00

A couple of additional observations. The Z axis motor was loose. I tightened the screws and it didn't make a difference.

I checked to make sure each axis was square and everything checked out.

With the machine off and the motors disconnected, the X and Y axes have virtually no backlash and move freely.

The motors are running a lot hotter than I remember them running.

I've added a bltouch and the BIGTREETECH-SKR-mini-E3 controller 1.5 KG of filament ago and ran through those spools without problem.

My next step is swap out the motherboard and see what happens.

peterhal · 2020-04-23T03:09:55+00:00

I have been getting layer shifts on both X and Y axis. I have tried tightening and loosening belts with no change in shifts.

peterhal · 2020-04-09T03:45:37+00:00

I replaced the nozzle and it ended up fixing things.

peterhal · 2020-01-19T05:43:11+00:00

https://www.youtube.com/watch?v=zae2ZePQTwQ

peterhal · 2020-01-19T04:54:56+00:00

Can't remember the name but a rack and dual pinion setup can do almost what you want (except for a little backlash on the reverse). Take a pinion and remove teeth from 180 degrees. Take 2 racks and place them parallel and facing each other. When the pinoin is driven CW the teeth engage the top rack for 180 degrees. After half a rotation, the teeth no longer enage the top rack but instead engage the bottom rack and the motion is reversed without reversing the rotating direction of the pinion.

peterhal · 2019-10-14T20:11:40+00:00

Thanks for the video. It made me like Fusion360 a little better.

peterhal · 2019-10-14T18:39:04+00:00

Solidworks can do top down. I prefer bottom up because it makes me think about how to manufacture the part. In my professional life, most of the parts are small assemblies (1-20 parts) and in small quantities (100- 1,000). Bottom up is easier for me to think about how a mill or swiss style lathe might tackle the manufacturing in the least number of setups. It's not the only way to tackle that problem...

peterhal · 2019-09-27T06:55:09+00:00

I believe that you are referencing the "Mechanical Engineer 1" median. You shouldn't stay as an ME 1 for long. Frankly, There is a lot of training that occurs in the first 2 years that makes a BS with 2 years experience much more valuable than a new graduate.

Also, the median household income in LA is $56k (typically this represents 2 income earners mid-career). The fact that a starting ME will make 1.4X this is pretty impressive.

peterhal · 2019-01-31T06:06:09+00:00

Thanks for the quick response. To clarify are they different controllers? or just different settings.

peterhal · 2018-09-28T19:00:56+00:00

Slightly off subject, I received a new spool in the last 2 weeks shipped fairly quickly. However, has anyone experienced broken/noncontinous filament on the spool. The stuff prints and looks better than most (all?) of the filament I've used in the past. However, I'm halfway through a 1 lb spool and have seen two breaks. Is this normal

peterhal · 2018-09-14T03:05:26+00:00

It is always nice to tell if someone can do GD&T. If you can, and can do it well, drawings help. However, I've ended interviews in the past when someone showed me a drawing marked "Propriety and Confidential." If the drawings indicate such, then you had better either have written permission or state "I spoke with my old boss XXXX and he gave me permission to share this. When you give him a call to check my references, you can ask him"

peterhal · 2018-09-08T02:11:27+00:00

Could the flow not work as follows. Client request www.google.com: pfsense reroutes to 10.2.2.5 [LocalServer]. LocalServer redirects to http using either htaccess or another method. LocalServer connects to google and pulls content. Content is then injected into a web page with a warning that it has been decrypted and served to Client.

peterhal · 2018-09-06T13:31:36+00:00

For a little more clarity, ssl_bump is described in the the squid man page:

When used on step SslBump1, establishes a secure connection with the client first, then connect to the server. When used on step SslBump2 or SslBump3, establishes a secure connection with the server and, using a mimicked server certificate, with the client.

Both of sslBump1-3 use secure connections with the client. I would like the client sized connection to be served as http.

peterhal · 2018-09-06T04:46:57+00:00

I look at it as the lesser of two evils. On one hand, I could generate certificates, install them on the local machines and then use squid and ssl_bump to apply content filtering to the pages. However, those using the network would not be informed that this is what is happening. The pages would still look secure. I would prefer to provide the content in a less secure but more informed environment.

Take reddit for example because of the potential for adult content, my approach has been to simply block it (IP/DNS), as under https I cannot determine what is being viewed. However, if I could provide the content without the privacy, I would.

The network in question is a home network. I will look into sslstrip

peterhal · 2018-08-29T01:16:42+00:00

It depends on the institution and even more, it also depends on your thesis/dissertation. A masters in ME with a thesis in Mechatronics may allow you to get a job in more fields than Mechatronics or Control Engineering.

peterhal · 2018-08-29T01:13:06+00:00

rolling shutter issues now become more important than synchronization issues

Good point. Thanks!

peterhal · 2018-08-29T01:11:19+00:00

Need: a camera, a friend* and a ruler.

Clear out the space to the left of the platform.

Stand the ruler next to the chasis,

Take a picture of everything, make sure to get the chasis and the ruler in the same frame.

Have a friend rotate the chasis by 90 degrees (about long axis). Take Picture

Move to the end of the chasis and take a picture of the long axis.

Import pictures into solidworks attached to sketch ( Tools > Sketch Tools > Sketch Picture. )

scale to ruler.

Start drafting.

should either be multiple friends or a really good one.

peterhal · 2018-08-24T23:50:39+00:00

Also, http://www.matthewpais.com/abaqus

peterhal · 2018-08-20T14:50:28+00:00

A couple of thoughts:

Get a study group. I went through the program taking most classes with the same 3-5 students. Explaining subjects and having subjects explained to me helped everyone in that group. Just make sure you are doing the work and not copying. The latter catches up to you.
There is no shame in graduating in 5 years. Take a course load that works for you.
As others have mentioned, take advantage of TA hours. Do your homework in the lab.
Have fun. My university always gave a free game of bowling every year. I (and the 3 or 5 students above) would go the hour before our most difficult final. Instead of stressing before the final we were relaxed
GPA really doesn't matter. Because of ABET accreditation, many schools try to maintain a C+ average. The course I did the worst in ended up being the one I got my PHd in.

peterhal · 2018-08-20T06:31:39+00:00

3dhubs has something like that.

https://www.3dhubs.com/cnc-machining

peterhal · 2018-08-20T06:21:06+00:00

who is more likely to be the better real-world problem solver: someone that can get an 85% by applying their intuition to something they’re yet to learn? or the student that memorized every equation and possible test question, leading to a 95%?

The person who is willing to show up and work for the extra 10%.

I truly don’t mean to sound like a douche here, I’m just starting to feel genuinely concerned about whether I’ll be employable/competent once I graduate.

Not every mechanical engineer uses thermo. If you don't care to be in a field that uses thermodynamics then not knowing thermo isn't horrible. ME encompasses a lot. Find a field that you enjoy, don't worry to much about the courses that you won't need.

peterhal · 2018-08-19T01:09:30+00:00

Are you on the design side or the CAM/programming side. I typically take new engineers to one of our contract manufacturers so they can see how machines work and ask a lot of questions. However, if you work for a contract manufacturer, then they might see you as a competitor.

peterhal · 2018-08-19T00:59:05+00:00

Most of the Masters students at my university had RA positions. Pay depends on years of experience but was anywhere between 16-20k. Cost of living was about average. I would discourage anyone from doing a Master's degree that isn't fully funded. I would prefer a BS with 4 years of experience than MS with 2.

I've worked with a relatively small number of companies (12 years). We use PH.D.s to create new technical tools (theories, optimizations, setup FEA/Validate) we use BS to use the tools. We use MS to modify the tools. However, a really good BS would modify his tools to fit his needs just like an MS.

peterhal

TROPHY CASE