[Coco] [coco]I'm wanting a video converter for my CC3

Mon Jun 1 16:38:57 EDT 2015

Wow! Great project! :-)

Have you considered to to 3D printing with it?

Just wondering ...

On Mon, Jun 1, 2015 at 5:31 PM, George Ramsower <georgera at gvtc.com> wrote:

>  This is a long post... so if computer controlled machining and/or using
> stepper motors doesn't interest you, skip trying to read all of this.......
>
> http://coco.thetinbox.com/CNCCoco.html
> WAY too much to explain but the software is written by me in B09.
> As I said earlier, my coco has eight ports. Four are 8 bit inputs and the
> other four are 8 bit outputs.
> These chips are using four address locations. The R/W line determines
> which way I want to go. So, using one address location allows me to either
> write to a latching output or read from an input chip. I use the inputs to
> find the home switch and the output latches drive the power amplifier in
> the box between the coco and the amplifier. Actually it's not an amplifier,
> it's chips that take the 5 volt signal from the coco and turn on or off the
> 12 volts that step the stepping motors.
> I've been wiring stuff to cocos shortly after I got my first one. So this
> is just second nature to me. The difficult part was figuring out how to
> operate those stepping motors. Once I had that figured out, the rest is
> easy until you have to use all this limited amount of knowledge to operate
> something like this mill. Then it become WAY more complicated if you try to
> use it as do most CNC milling machines operate. Many, Many things to
> include in the software such as tool diameter, milling inside or outside,
> starting points and several more things.
>  Right now, I am attempting to rewrite the B09 code to make it modular so
> I don't have to put EVERYTHING in one program.
>  This project started as fun, then it became a labor of love, then it
> became labor and now, it's just plain hard work, but still...it's done with
> a coco which, puts enough fun in it to mix in some fun.
>  It took many hours to build the machine/mill. I used a manual mill to
> make many of the parts that went into it. A drill press and a lathe were
> required also. Taps and dies, drill bits... lots of work. The basic frame
> was made using an acetylene torch, chop saw, belt sander, arc welder and
> lots of labor. This is no easy task.
>  However, there are other ways to do this. Just buy one, remove the
> included computer and interface a Coco.
>  Write your own software and spend about a bazillion hours to do this and
> viola!! you have a Coco controlled milling machine.
>  Lots to brag about but, it's so danged slow, it's difficult to impress
> your friends as they won't have the patience to watch it operate.
>  They are usually impressed with the finished product but NOT watching it
> actually work at making what they saw.
>  Usually, when I actually make something with it, I close the door to that
> room and go do something else, or watch TV or...take a nap. Then, it
> doesn't bother me or bore me to let it do whatever it is your imagination
> comes up with to make that piece.
>  Right now, I'm working on engraving. That's cool stuff. I have eight
> alpha characters done and 0-9 numeric completed. I tell the software how
> tall I want those characters to be and it does it.
>  However, I have to carefully set the depth into the material. One half of
> one thousandths of an inch really makes a difference. I've found accuracy
> to .0002 to be about correct. This machine is good to .00003.
>  Darned accurate and not easy to build it that way. This took MANY
> experiments and thought to get a lead screw to do that. I can move this
> thing, either x,y or z axis that accurately but, there is VERY little power
> in it, compared to a normal mill. I use teflon lead nuts where a commercial
> unit will use ball nuts and screws.
>  Lots to learn here!!
>
>
>
> On 6/1/2015 2:22 PM, abqpenmaster wrote:
>
>> Please tell us more about your coco-controlled milling machine.  How is
>> it connected,  and what software?  Sounds very neat
>> Sean R
>>
>>
>> Albuquerque,  NM USA
>>
>> <div>-------- Original message --------</div><div>From: George Ramsower <
>> georgera at gvtc.com> </div><div>Date:06/01/2015  12:48 PM  (GMT-07:00)
>> </div><div>To: CoCoList for Color Computer Enthusiasts <
>> coco at maltedmedia.com> </div><div>Subject: Re: [Coco] [coco]I'm wanting a
>> video converter for my CC3 </div><div>
>> </div>  So far, based on the responses I'm getting on this, I'm getting
>> excited. If I can pull this off, I'll be getting closer to bringing my
>> main Coco3 in the living room can use a KVM switch on it. The second
>> Coco3 will stay in the back room because it operates my desktop milling
>> machine(Micro-Mill) and it does other stuff as well. Many inputs and
>> outputs.
>>
>> George R.
>>
>>
>>
>>
>
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