Here’s a panorama of Edmonton in the summer time, specifically July 2022


June 18th, 2022 | Categories: Electronics | Tags: , , , ,

Over the years I’ve posted things to this site as a bit of a reminder to myself about the kinds of things I’ve done over the years. It has now been about 15 years since I started the site and that prompted me to go through old photos, back some stuff up and reminisce about days gone by. I’m going to post a number of photos that I’ve found that are purely of interest to me but, hey, maybe somebody else might enjoy them too.

My work area circa 2008 or so. I don’t miss the 4:3 aspect ration monitors but I sure seem to have had a lot of them
A panoramic view of Edmonton in the Year 2007, September to be exact. This was taken near the river bank at the Old Timer’s cabin.
My first real bike that I had bought as an adult. I didn’t drive at the time so I rode this sorry bastard of a bike all over the city with me. I still have it and it works fine.
The result of some layup molds I had made for an intake cover. I made the molds but the other guys did the actual hard work of laying up the fiber and making it look like a finished product.
My desk at Endura. As you can see I’ve tried to set up a small electronics lab on my desk there and the area is a mess. This trend will not be going away in 2022.
My first real attempt at making a functioning product. In this case it’s an inline viscometer in a form that would roughly emulate a krebs viscometer. It worked eventually…. somewhat. I truly suffered from a distinct case of hubris but it helped me force my way along to learning what I’ve learned to this day.
The inside of the maintenance shop of Endura MFG. I learned so much here in my 2-3 years, more than almost any other place. Despite being bitter about the place for years, I now understand and appreciate my time here.
Another picture of that inline krebs viscometer. In retrospect, had I known what I know now, I could’ve made this viable. I remember that at the time I was reluctant to test it because I was scared of what would happen if it didn’t work. Would months of work be down the drain? Would I look like a fool? (Hint: it didn’t work very well at all)
A more complete version of the electronics in the previous picture. An interesting example of an attempt at big TTL Quad-half H-bridge and some other shit I don’t remember.
So what was supposed to be a gentle walk down memory lane is now a look at the iterations of a single project. This version is now closer to the one that works. As I write this I’m genuinely surprised how much I did in such a short period of time while doing other things at the same time. This one as you can tell is rotary with a sealing area kept lightly pressurized with a small air pump. This one is still intended to run in-line along a pipe or side of a tank.
Here’s a look down the legislature grounds in September 2008. Is it different now? I don’t know
This is from when I moved myself from the maintenance building over to the lab building. I don’t remember why or how, I just remember that I did.
Another prototype! This one appears to be the one where it’s intended to merely hang on the top of a tank. For reference we’re in March of 2009 here.
Here’s something from June of 2009 that’s kinda fun. I may have an older post about it but this is something that actually works. it’s meant to make a point cloud with 3 linear potentiometers and by using a button you can put the high-res ADC input into a file or whatever and create a point cloud from known values about the analog values. This was neat.
Here we go, the final version of this project. It worked surprisingly well. That said I probably wouldn’t use Phenolic to make the frame but it does look nice. Odlly enough, I even like the smell of phenolic being cut.
Here it is with the protective tube cut. Merely wave your hand over the top and it’ll start up. I had to angle the viewing window in order to allow the infrared sensor to detect objects. In retrospect I wouldn’t have done it this way. The window would be either scuffed or covered in paint and therefore useless. If I recall correctly I had another version of this with a large external perfboard version of what’s inside. This machine never made it past this stage, I was going to implement MODBUS on it and whatever else but didn’t get to that point. The recession had hit hard and that was that.

Well, there we go. Thanks for walking through 2007 to 2009 with me. I was expecting to be enthralled with my pictures of Edmonton but I guess work was, as always, more interesting to me.

May 31st, 2022 | Categories: Machining, Work | Tags: , , , ,

Well, I’ve been here at Rejent on and off for the last 12 years. Now the company is moving to different digs and I figured I’d take some arguably unflattering pictures of the shop. Things are in disarray and thigs are a bit dirty as well.

Right now these things seem mundane but in 20 or 40 years there will be somebody, perhaps even myself who will enjoy looking at photos like these. Our new place will be in the old Precimax building and while it doesn’t have that much more room, it will be a fresh start and we can organize things with a pinch of pride.

Here’s to a good move!

May 26th, 2022 | Categories: Machining, Work | Tags: , , , , , ,

We’ve had these things in waiting for quite some time. I’ve designed them to be lighter, more accurate, less snaggy and a bit sleeker. They take the standard heads that I’ve made for the last 4 years and still move linearly so that you can put whatever kind of styli you want on them. The older ones used to snag due to the fact that there were two bearing being forced to cock over in certain circumstances.

A view of the working end of the gage

As things heat up in the world and the economy either booms or busts, hopefully we’ll be able sell some!

Over the years I’ve had issues with large parts and finding easy ways to lay them out angularly, especially on the ram EDM. During this time I’ve kind of tinkered in my head with an idea whereby you have a level of sorts stuck to the part and you simply rotate it and have a direct reading of rotation applied to the part. I have tried those digital levels but accelerometers don’t have the precision required to get within a few thou over, say 6 inches.

The prototype device as it is right now

It’s obviously very rough and uses a cheap Chinese 2000ppr encoder but it’s good enough for .045 degree increments. I would trust this thing for some larger layout and alignment work. That said, I have a nice US digital encoder on the way with 10000cpr (40000 ticks all the way around) so a resolution of .009 degrees. Some issues I’m having is with the mass. If the mass is too small it won’t overcome the friction of the bearings completely and if the mass is too large it swings for a long time making it a hassle to allow it to settle. I’d like to find a solution whereby I can add friction without adding stiction. Frankly the whole thing needs a good concept redevelopment but I believe it’ll be a handy tool in niche situations.

I’ll keep this updated as I go along.

June 22nd, 2021 | Categories: Electronics | Tags: , , , , ,

Well, here we are, 2021 is here. Let’s show the shop as it stands in 2021. This is of course only the machining side but in another 10 years the pic will be of interest to people who like this kind of stuff. Also, been here for over 10 years now. wow.

Rejent Tool from the north-east side
Rejent Tool from the north west side.

That is all.

Well, for some time we’ve taken to building new Bore Gage for a customer. In an odd twist, I had very little to do with the mechanical design but was primarily focused on the electronics and software.

Basically what this device does is measure the bore of a hydraulic cylinder in a comparative way all the way down the bore. It uses a Mitutoyo encoder for the diametrical size and a US digital rotary encoder on the wheel to keep track of the distance down the bore. As the device measures, it keeps track of the position and the measurements therein and creates zones where an average, maximum, minimum and sample size is kept. It is then plotted out along the distance.

Anyways, I had some fun doing this project and I am looking forward to doing more.

April 19th, 2020 | Categories: Electronics | Tags:

Now that COVID-19 is in full swing around the world, I have a bit of extra time. I designed a new measuring head using the Renishaw RLC2IC magnetic encoder head from RLS.

This was borne from a need for one of these things but not wanting to spend $1200 CAD. Also, being able to use whatever connector you want is a nice touch.

A little overview of the head

In a package that’s 1.65″ x 2.5″ x .75″ you can plop this guy on the end of whatever and measure the insides of things (or dial them in). Also not shown is the strain relief for the ribbon cable or cable that would come out of the unit. The design isn’t fancy and I haven’t thought about attachment provisions yet but I should be making one of these this week.

The encoder itself is quite small and the output is standard quadrature so that makes it quite handy for all kinds of applications. Anyways, will update when I actually make this little guy.

August 16th, 2019 | Categories: Electronics | Tags: , , , , ,

Like many of my posts, I simply update for the sake of updating. That’s fine as far as I’m concerned. A lot has happened since my last update. Been to Japan, designed a bit of stuff and just have been simply living. Here are a few things I’ve been working on…

This is a gage I designed and is now going all over the place.
This is a prototype master I am working on which will have motion control.

So, with that. I finally took the trip I’ve been wanting to go on for 20 years, to Japan. Now, I’m not a real weeaboo or anything but I’ve always been fascinated by the notion of such a large dense city such as Tokyo and so, with my girlfriend, we went to Tokyo for almost two weeks. It was absolutely amazing!

All in all, I’ve been enjoying my days, playing Rust and just plugging away.

July 11th, 2018 | Categories: Machining, Work | Tags: , , , ,

After a bit of work and worry, the gages are ready for shipment and are as nice as I could hope for.

I’m quite proud of these, they’re repeatable and feel damned good in the hands.

June 21st, 2018 | Categories: Machining, Work | Tags: , , , ,

Well, the new boring heads I designed came out well, especially after nitriding. Man! is that black finish ever nice! I’ve made many heads before but these turned out nicer than usual.

a forwards facing dnmg holder with a large offset

The whole order

The backwards dnmg holder

Well, things are getting busy, I’m sure there will be more to post soon, especially as our gages get done!

May 31st, 2018 | Categories: Machining, Work | Tags: , , , ,

Well, the prototype gage is here and it seems to work reasonably well. I’ve given it extra travel over the old ones and it seems to have really nice, smooth action.

Here are some pics

Now to make some styluses and start shipping these things around the world!