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I'm assuming you're using STK500/similar to program the chip? The 328P has 2x the program memory is shipped with all Arduino Unos.

How many bits of grey code do you have from your encoder? I'm...

which model chip are you using?

Read the datasheet for your chip, I've made some VERY stupid mistakes (wired an LPC2148 into boot loader loop) because I didn't read the datasheet.

All of the Arduinos are based on Atmel products,...

When buy the UPS, make sure you buy one that's big enough for your load. I would get something that can handle 1.8kVA (this will make sure a machine consuming 15A at 115Vac is feed enough power...

There are a lot variables involved here. I would start with these (I just found but lost the thread they're from):
...

Very nice indeed.

It looks like you used pipe dope and not Teflon tape, is that correct?

Also, how do you like the Shars vice?

I would guess it will take a month or so to get going. The actual time is going to depend on if you are playing with the machine on a daily basis or not. You're going to ruin some tools and...

accordion type way cover.

My impression of the serial to ethernet converters is they do format conversion [RS232 to ethernet (IEEE 802.3, etc) and nothing else. So unless the ethernet converter has the ability to grab the NC...

Barry,

The latest post last thing is the default for the forum, there is a way to change it somewhere in the user prefs section. It's done that way so that the reader sees the evolution of the...

Was the last job you did in metal or another conductive material? Have you tried using some compressed air to clean out the box with the electronics in it? If a chip of metal is bridging a power...

Is the machine skipping steps under load only? Or is the machine skipping steps unloaded as well?

I think you mean end mills, not drill bits.

To answer your question with a diagram.
Imagine the region of "=" as the part you are cutting.
I labeled where the upper and lower are.
...

I have a Digilent XCR Plus with a Xilinx XCR3064L in it. It has 4 buttons, 8 switches, 8 LEDs, a 2 digit 7 segment LED, a trim pot, a breakout for the XCR chip and a breadboard. It also has a JTAG...

Mariss,

Do you use a dev board for the CoolRunners? If you do, which one do you use?

I'm open to the idea. I am in process of trying to open up a custom/specialized electronics site. PM me.

There is a book that Scientific American published back in the mid/late 60's with all sorts of projects, including a home x-ray machine.

I believe it was called Projects For The Amateur...

All I have to say is WOW!!

I would never have gotten anywhere close to this w/o CAD and a ton $$$.

Great job!

Not that I know too much about E-Stop implementation, but if the computer crashes or hangs, won't that cause the E-Stop to fail?

@Mariss:

Is there a way to have a line run into the motor drive,...

A lot of MPGs have an E-Stop on them, so I propose you add an E-Stop.

I tended to get very bad headaches when I was very young and my mom would wear perfume. I always found that opening up windows up fixed the problem quickly. I eventually grew out of it (for the...

nice. hopefully that works out better than my macbook pro with bootcamp has... (2 motherboard replacements, 1 new set of fans and a new trackpad/keyboard later and upgraded hard drive and RAM with...

this is a picture of the bleeder set up I put in my circuits, I change the resistor value as needed for my application.

That will work. To err on the side of over doing it, you could drop a heat sink on it, but if you have a fault, I'm hoping you will notice it before heat becomes a problem for the diode. Basically...

Electrically speaking that sounds right. The "star node" would be a buss bar or something like it. The bottom line is that you want the machine's earth grounds all tie to the same place.

One...

The numbers I used were totally made up on the spot. They were intended to show how I went about selecting a fuse for the circuits I design.


For any normal circuit, I agree fast blow, but in a...

That assumes that your water pipes are earthed. The only absolute way to be sure you have a good earth ground is to drive a fresh ground rod to a specified depth (usually ~8ft), then use an...

Aaron, congrats on the award, finally someone noticed that you wtf you are talking about.

in regards to the third shift prick: Leave him be, he is not worth your time.

Yes, there are some...

So this is what i cooked up in a few minutes, its not pretty, and given that its 5am, and I haven't slept (caffeine). Someone please check this and comment on its validity.

The idea with this...

They could, but they do sacrifice several things over the nut design.

The nut design has a smaller lowest replaceable unit. The Anaheim things force you to replace the whole motor and lead...