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Tim Goldstein wrote: What model tape drive? Hmmm, the .5 Amp rating sounds REAL fishy. If that really is the limit, at 24V, that is a 12 Watt motor! It shouldn't be able to even move a

Matt Shaver wrote: Be warned, the Bridgepot Boss controllers reduced motor current when standing still. If you run the full 8 A all the time, the motors are likely to overheat. Jon

No, not if you get several people involved in it. What you really want is to get somebody to make a glass master pattern (either film emulsion or

Generally, NO WAY! Consider that this is about 50,000 lines of mostly C++, with one section in C, that has only been run on Unix-derived systems for a couple of years. (It was ported to NT, but

"Ian W. Wright" wrote: No, this is all wrong. You don't want to 'block voltage', you want to recirculate current. The inductance of the motor causes voltages to be produced when you abruptly try

Mo, I would be interested in the circuit you are thinking of for an overheat shutoff for this controller. I currently have no need to push higher amps, but I like the idea of getting some protection

Here are some of the problems that I ran into when I tried to hot rod this circuit: I started with a layout that Kevin Carroll sent to me. This is similar to what Dan is selling, only Dan's is much

<rcamp@...> wrote: I missed the description of your 4X4, if you posted it. Could you say how it was constructed, as to guides used, gantry framing/structure, and also positioning

Geoff , The size of the table depends on what you plan to make. I have a 4' by 4' moving gantry system which has some play in it. I am currently building a 2' by 2' fixed bridge cnc router that

higher .1ohms Matt, I wish you luck! It is far nicer to explore at the ends of the envelope when you have a safety chute. Getting the board to run at high Amps is one thing, getting it to run reliably

Jon is the real expert on this, but some of the issues are: 1. Does the motor "cog" when you turn it? These probably won't given their application but if you run into any others this is one thing to

I was just a local salvage yard and they had a few DEC Magtape units that had what appeared to me to be servo motors to drive the tape reels. My question to you servo guru's (Matt, Jon, & ??) are

Is this a Bridgeport In the BOSS 3-6 range? If so I am retrofitting one now using the Camtronics board (I hope!) If I read the BP documentation correctly, the desired motor current is 8 amps. The

Hi all, I just caught up on all the posts on encoder read heads. Interesting stuff. I thought I would throw a few thing in the mix. I used to work for HP, and did a few projects with the OED

I bought an old CNC mill and need to retrofit it. It has some ancient 3 phase electronics, huge inductors, and so on to drive the steppers. That will all be replaced with modern electronics- the

Thanks there are two more. When I have the last article which I just sent off yesterday published I will post all of them at my web site. Together the 4 artciles should help the newbies quite a

Hello All Can the c source be used with a compiler for windows such as Borland TC 4. Are there any resources or how to's on this aspect of using these tools. Robert Ash

I have been dealing with Sescom for the past several years. They are great and most of all I like the fact that I can buy flat panels and then machine them . If you every tried macining a fully

Thansk Dave, Do you mean that your diodes are in series with the wires to the motors? The circuit I am using has diodes from each motor wire to ground but it would seem safer to put some in the motor

Thansk Dave, Do you mean that your diodes are in series with the wires to the motors? The circuit I am using has diodes from each motor wire to ground but it would seem safer to put some in the motor