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Spockie-Tech
Site Admin
Joined: 31 May 2004
Posts: 3160
Location: Melbourne, Australia
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*that* was informative andew..
Do people really want to hear about the non-bot related hobbies of everyone ? catch me on a chatty day and you might end up with another mega post..
Open-interests include - Computers, Electronics, Tesla/Hi-Power Gadgets, Old-school-Hacker, Robots, Science & Quantum-type Physics, Freedom, Linux, Performance 70's Cars, GyroCopters, Go Karts, Trance/Rave Music and Parties, D.J., Graphic V.J., Drag Racing.
umm, that about covers it. anyone interested in details ? _________________ Great minds discuss ideas. Average minds discuss events. Small minds discuss people
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Tue Aug 31, 2004 11:20 pm |
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mytqik
Joined: 26 Jun 2004
Posts: 127
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Actually using a PC as a CNC controller is quite easy. The EMC will convert standard G & M code into step & direction signals that is pumped out the printer port. An amplifier is then used to convert these signals into a 12v feed that is capable of running a stepper motor. Mount the stepper motor onto the machine you want & instantly you have a very basic CNC machine, that will be still better than any human operator.
The drama is, there is no feed back into the computer from the stepper motor, so the computer assumes the motor did what it was told to do. If the motor stalls etc, the computer just keeps on pumping out steps, so by the time the motor continues, it could be 1,2,3-10 steps behind where it should be. Therefore the result is not what you want.
So now you have to add an encoder to the circuit & this is where the trouble is. I have not seen anyone that can get EMC to read the printer port for the encoder signals & adjust the motor accordingly. Some people have an external amplifier which can do this, but they are expensive.
The other problem is converting drawings into G & M code. I can do it manually, however it does take some time. I still have heaps to learn about the whole thing, but it is very interesting.
have a look at www.linuxcnc.org
When I can think of specific linux q's I will post them here & somewhere here. Thanks Brett.
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Wed Sep 01, 2004 10:44 am |
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Ajax
Experienced Roboteer
Joined: 17 Jun 2004
Posts: 298
Location: Sydney
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Finally got this written. just a little post. NOT
My career path is different to Spockie, yet we started in a very simular manner.
I started in electronics like most doing the tricky dicky (Dick Smith Electronics) projects, and started with computers at tech school.
When I was around 13 years old, I enrolled in a night course at ‘Box Hill TAFE’ building test equipment (Can’t remember the course name.) Thanks to the folks for that.
I did the night school for 3 ½ years (Stoped as I started TAFE full time.)
Then enrolled at ‘Box Hill TAFE’
First year of basic Electronics certificate (BEC), followed up by "Digital Electronics Technician Certificate"
This is where I met Spockie.
I consider that I have been very lucky with my career.
My first job after TAFE was with ‘GGT International’ (Gerber Garment Technologies) I was with them for 5 ½ years.
(Gerber consists of GGT, GST, GSI, Gerber Optical. In Australia were distributors for ICS colour systems (Now Data Colour).)
I started as a beach tech and after six months I started to do some fieldwork, 8 months later, I was a full time ‘Field Service Engineer’.
The equipment I worked on was high-speed plotters, Pattern Cutters (for cutting material for cloths or wings for the aircraft) computer design systems, colour matching systems, optical grinders, and the list goes on.
(Note: - When I talk about plotters, an A0 plotter to me, I would call a baby plotter.)
Toy's, Toy's and more Toy's
Note: Managers & customers don't like you telling them, that their equipment is a toy
This job was one that I had to learn about everything, Computer systems, Networks, Electronics, Mechanical, production (flow, planning, etc), etc
The laugh was that I ended up working on more of the mechanics than the electronics and computers.
Personally, the ultimate job, plenty of toys to play with, and can always keep you interested.
Then there were management changes. Now I hate it when someone does something that effects, my work and I let them know about it. Some managers don’t like that
For some reason, we didn’t get along, and the opportunities to learn about the new equipment were never given to me.
Therefore, I ended up changing jobs. With a sort 6-month, rest in between.
I got a job with ‘Hawker Richardson’. I thought GGT had a lot of equipment, Hawkers was about double again.
This was mainly in the electronics industry. Installing, Maintaining, surface mount equipment, as well as training operators & Maintenance staff.
This was where the travel really started. (The start of the week was, go to the airport. Not as good as it sounds)
The equipment was Yamaha & Panasonic surface mount loaders, glue dispensers, Hella reflow ovens, Wave soldering machines, MPM screen printers, Vision inspection systems, conveyors / product handling systems, etc and there was also the Yamaha assembly robots.
New toys to learn
This was a great job, but the hours I worked, and the amount of travel was getting a bit much. 2 ½ years at Hawker Richardson.
So it was time for a change and I started contracting in the IT industry. Most contracts were 3 – 6 months some longer.
I start out doing IT support and warranty repairs of computers, laptops and Printers. Then a contract as a Technical writer (wrote a set of SOE manuals), some other little IT based contracts, then I got a ‘Project Coordinator’ contract at ‘Coles Myer’ for the GST upgrade to the Coles stores.
First they got me to help with an upgrade to their ‘Kmart’ stores. I got an award for crashing the most servers.
Not my fault really, but that’s another story.
At Coles Myer in conjunction with the project manager, I wrote procedure manuals, set up test systems, coordinated the upgrade, etc.
I also had some other smaller contracts of various types.
After the Y2K and GST, companies had spent all their budgets for the next 5 years, and the recruitment industry was going through a major change, I ended up out of work for 12 months.
I finally got a job with ‘Schefenacker Vision Systems’ in Adelaide as a Manufacturing engineer.
(Schefenacker I hear you say. Use to be call Britax, and you would use their product if you drive an Australian built car. The side mirrors.)
Then due to company changes, after only being there for three months. My position changed to ‘Production engineer’, where I solve production issues, which could be anything from modifying a production line, to redesigning a piece of equipment, to working on product issues, and more.
Then the next project I was given was to implement an efficiency / reporting system for the factory. This is what I am still working on, but is nearly completed.
For the next chapter of my career is still to be determined. I am being made redundant as of the end of September, so I am looking for a new job. (Not looking that hard, at the moment ) Where it takes me and what I will be doing, I don’t know!
So as you can see. From simular (if not the same in some way’s) beginning’s as Spockie and my self, there are many paths that can be taken, and the course that is chosen doesn’t mean that is what you will end up doing. _________________ It's all about the destruction.
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Fri Sep 03, 2004 11:12 am |
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3Faze
Joined: 26 Jun 2004
Posts: 99
Location: Lincolnshire, UK
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Other Hobbies?
Archery, Abseiling, beer, cars and bikes, the stock market, computers, kayaking, Scouting (been in it for about 17 years now), music (listening to, also DJing, and I play guitar, bass and drums) and a load of other stuff besides, which is why it takes me ages to build a robot!
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Mon Sep 06, 2004 4:28 am |
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Spockie-Tech
Site Admin
Joined: 31 May 2004
Posts: 3160
Location: Melbourne, Australia
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Oh yeah, I just love jobs with low pay, poor working conditions and the possibility of serious bodily harm.. dont you ?
If you're looking for good $$ and dont mind being out of touch for 2 weeks out of 4, I knew a guy who worked as a diesel mechanic out on the Offshore Oil Rigs..
Helicopter picks you up monday morning, flies you out to the rig, you spend the next 2 weeks working, sleeping and living out there, then they fly you back in again and you get the next 2 weeks off. <repeat>
Not many diesel mechanics get paid ~$60k a year for only working half a year though. If you ignore the fact that you dont get to see your friends and stuff for 2 weeks, then its sort of equivalent to getting paid $120k, since you still have the other 2 weeks to do your own stuff in.
Sounded alright, but he said it got a bit hairy out on the rigs when storms hit.. _________________ Great minds discuss ideas. Average minds discuss events. Small minds discuss people
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Thu Oct 07, 2004 9:49 pm |
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