Back at Rejent and back in the design chair

It been some time since I’ve updated this blog. While I have designed and made quite a few things, it’s been at the very bottom of my list to update this blog. Anyways, here are a few things I’ve worked on or am working on.

New RTJ gage

So, in an effort to simplify the manufacturing and generalize the usage of the gage I have redesigned it. With 3/4″ of travel it will allow for the use of almost any attachment along with the balls that typically fit something like this.

A rough early version of the new gage

Still will take some time to actually manufacture it but whatever.

A quick gage for a customer

These were commissioned from a customer for the quick checking of a particular size on a production job.

Nothing too spectacular there.

I’ve worked on a few other things such as the forklift safety system. This device was meant to be attached to the forklift and engage a horn when the forklift went to fast. It was completed but the company no longer required it.

Anyways, time to start some more interesting projects in the future.

New Youtube Channel for a new time

I’ve decided to start a new Youtube channel simply because I feel as though adding my projects and the things that I like to a video channel will drive me in ways I hadn’t had before. Thus far, I have 0 subscribers (aside from myself) and I’m genuinely curious to see how well I can make a Youtube channel work out. I believe I have some interesting things to share and some boring but popular things to share as well and a new Youtube channel that explores all those things.

Here’s a link to the channel

https://www.youtube.com/channel/UCwxvlEKdkh9eV9qLXHBh3fw

Not the most graceful URL but I will get a better one once I get some subscribers and I’ve been around for a while. I will explore things that I do such as electronics, gaming, machining, photography and whatever else I come across.

Here’s a video detailing something mundane, my calculator collection.

So, feel free to look at my channel, subscribe and like a video or two. 🙂

What a coincidence… The Remote indicator is alive!

Well, I was looking at my site and noticed that my last entry was November and it was the very project I’m starting to finish right now.

remoteacator

This is my Remote indicator. It’s a tool I developed after having found that standard indicators are a pain in the ass in some circumstances. While you can bash something together with off the shelf parts like say,  a Mitutoyo digital dial and a SPC box, that option can be pretty expensive.

Now I’m going to start developing the next version while I test out this one. The next one will be slimmer, more efficient and more attractive. There will be an optional Infrared communication port for it so when it’s sitting inside a deep bore or whatever ,it can still be read.

My new office and projects I’m working on

My office in September my office in October

My new office is filling up, now I need to move some of my test equipment in and start developing. Truth be told though, I have been developing some interesting things and soon I will post them here on the blog again. It’s been a while since I’ve felt like posting about the things I make but it’s always a good time to keep a good record of the things you do.

🙂indicator

Some more of Edmonton and what’s happening!

Like I’ve had to say many times before, it’s been a while since I’ve posted. It’s not because I haven’t been doing anything but because I simply haven’t taken any real pictures of anything crazy. Maybe I’ll post a bit later. First to post a few images that I haven’t posted as yet. They’ve been sitting here on the server for quite some time but i know people like these images so I’m not going to do a comparison, just post 🙂

Edmonton Derrick
This, I believe used to stand near 51st avenue. Nobody’s been able to confirm though.
Edmonton Downtown 1959
This is downtown Edmonton Circa 1959
Edmonton Downtown 1974
Downtown Edmonton 1974
edmonton civic center plan
This was a hypothetical city center plan for Churchill Square. It is vastly different today. I suspect this was from the lated 50’s, early 60’s
NAIT 1963ish
This is NAIT from when it first opened. From what I can tell, it’s about 1963 and looking from the south side of the building.
university early 70s
This is the U of A in the early 70’s
West edmonton mall mindbender
A promotional postcard from West Edmonton Mall’s the MindBender. From about ’85
west edmonton mall
West edmonton mall, late 80’s Early 90’s. looking NEE

Well, I hope somebody out there enjoys it!!!

 

Diminutive, a small EDM prototype

For the last little bit I’ve been working on a small EDM prototype for use on large parts, pipe sections or for use in the field. While they do make and sell these things, the vast majority of them require the use of vibratory assistance, aren’t terribly accurate and are relatively low powered. I intend to make one that is accurate and could potentially be used as a ram EDM in a pinch. Also, I’d like it to be able to use copper and graphite electrodes so polarity reversal is necessary.

This is the linear drive of the small EDM. It has 8 inches of travel and is surprisingly rigid and play-free. I was going to use a gear motor on the top with a rotary encoder but since the loads are quite small a stepper should be OK, even at higher speeds.
This is the linear drive of the small EDM. It has 8 inches of travel and is surprisingly rigid and play-free. I was going to use a gear motor on the top with a rotary encoder but since the loads are quite small a stepper should be OK, even at higher speeds.

I’m currently trying to come up with ways to mount this guy on magnetic bases but also allow for small amounts of fine adjustment so that if there is a need for precision work, the unit can be dialed in. Right now the coupling is made of two pieces of steel. I’m going to replace one of them with nylon to reduce noise. I was going to use a spider coupler with rubber in between but I didn’t have one kicking around on the weekend when I was making it so I just made my own.

It's all made from 7075 aircraft aluminum. Pretty strong stuff. The movement was initially pretty stiff because the screw, which is just hot rolled, was a little bit out so I had to run it back and forth to wear in the brass acme nut. I may put two acme nuts into the travel block simply to take up play, as it stands though right now there is less tan .0003" of play, even with significant force applied.
It’s all made from 7075 aircraft aluminum. Pretty strong stuff. The movement was initially pretty stiff because the screw, which is just hot rolled, was a little bit out so I had to run it back and forth to wear in the brass acme nut. I may put two acme nuts into the travel block simply to take up play, as it stands though right now there is less tan .0003″ of play, even with significant force applied.

So next things next, the prototype electronics. Right now I’m simply going to use what I have laying around, so a TM1638 display, a cheap chinese stepper driver with a toshiba stepper driver and I opted for an Arduino to drive the motor. I will be making a full fledged PCB that will nicely fit in a box but I need to get the pulse generator and sensory circuits working first, then I can integrate them fully on to one PCB.

Just a rough testbed for the motion control and a simple interface. I would like this thing to be nice and easy to use.
Just a rough testbed for the motion control and a simple interface. I would like this thing to be nice and easy to use.

Well, anyways, I have quite a bit more work to do for this project. Even a single axis CNC can be a little more tricky since it’s doing more than simply positioning. A ram EDM is a dynamic machine that reacts to the sensory input to keep the cut running smoothly and with appropriate voltage and gap settings.

More later.

Quick post: JY-MCU TM1638 Drawing

Just figured I’d share a drawing I made of the JY-MCU 8 digit TM1638 display for whoever wants it. I love these displays and figured others might like them too.

tm1638 model

jy-mcu display tm1638

REMINDER: I did not include the headers on the front. I usually clip them off because they are useless when trying to fit them in a panel!

jy-mcu display tm1638 (in PDF format)

jy-mcu display tm1638 (zipped IGES / IGS file)

Summer is almost over

Yes, summer is almost over and it’s been about the whole summer that I haven’t posted anything. That’s not to say that I haven’t been working on anything though. Here are a few of the things I’ve been working on.

Autonomous Submarine

This project hasn’t gone as quickly as I had hoped. I’ve been working mostly on the SONAR portion of it but frankly this summer has been very busy work-wise and thus I’ve been at a loss for getting stuff done. I’ve also been working on a viable, yet inexpensive depth sensor for the craft. For this I have to give a shout out to Farnell/Newark Canada who were kind enough to give me a sensor for the occasion. Visit them at http://canada.newark.com or http://element14.com

The 100 psi sensor that Farnell/Newark sent me
The 100 psi sensor that Farnell/Newark sent me

With this device I can easily keep an accurate depth reading up to my limit of 130ft. Yes the depth is arbitrary but that’s a good depth for most lakes around here. The idea first is to simply plunge the chassis down into the depths and record the images recorded from the main cabinet.

 

A very simple chassis
A very simple chassis

Well, there’s not much to her but perhaps I can get it dipped into a lake before the snow flies.

Some games

Yes, I’ve been working on games again. It’s a fun diversion for a while and it’s been a while since I’ve made anything substantial. Here’s a couple of screenshots

My start at a game called Prellex. Not very good looking yet but I intend to have smart AI take the place of large numbers of enemies to provide difficulty.
My start at a game called Prellex. Not very good looking yet but I intend to have smart AI take the place of large numbers of enemies to provide difficulty.
Another rendition of my old game Reaction. I should probably finish this one since it's a pretty fun game and would work well for HTML5
Another rendition of my old game Reaction. I should probably finish this one since it’s a pretty fun game and would work well for HTML5

Anyways, aside from that I’m working on a basic design for a 2D stepper driven table for use with a stamping head but realistically I haven’t had the time to do anything with that.

We’ll see what the next few months brings!