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Thanks Phife, I do use the techniques you mentioned. But they are sometimes VERY time consuming. Lets say I have to make 25 NOS of the same carving. I would end up sanding it more than the hours it...

Hello everyone,

I have recently built a 3 axis CNC router and am doing some 2.5D carvings on MDF and wood. Somehow I'm finding it hard to hand sand every nook n corner of some carvings. Its...

Hi,
I know this is a pretty old post. I was just going through it and was wondering if there has been any development in the DIY segment of USB Support for Mach3. its been many years since this idea...

Well a two phase motor is required to have 2 sets of coils right??? this one only has Two wires coming out. The only thing we can do to make it run is keep changing the polarity. It does move in...

Thanks Al. I'l look for more info on BLDC n AC synchronous servo motor. Thank you for the info :)

Joe!

Thanks Al. Do you know any good reading material on ECMs? Eventhough this motor is probably useless as a drive motor but I'm curious as to how the motor is driven. I did a google but couldnt find...

I was trying to find what motors i can obtain locally. A friend of mine gave me an old motor and told me if I could make it run he has plenty of motors of the same type. But I had never seen a motor...

Thank You Sam, Jon for your inputs.

I'm not very familiar with editing the HAL files. But now I have an idea as to what I need to do. Just need to do a bit of reading the HAL Manual. I'l post my...

Thanks Cyclestart, Marzetti.

I had come across the link on LinuxCNC site. But like you said even I couldnt find where he had posted his INI n HAL files. :(

Pico systems are more of a commercial...

Hello Everyone,

I'm working on a CNC Router in my free time. I have read many posts about using an Encoder along with a Stepper motor. However I'm confused as to how to get it done. I do not...

I had posted this in the DIY Section... But I guess this is a better section for the topic (Moderators plz delete the other post).

I'm designing a 3m x 2m CNC Router. Considering the length of the...

I'm designing a 3m x 2m CNC Router. Considering the length of the axis, most advices I get are to go for a Rack n Pinion drive for X and Y Axis. I am using Linear Guide rails (20mm) with 4 Carriages...

Thanks Herbert, I have started working on the spindle... Will post updates once its done...

Joe :)

Herbert, I have been going through your Spindle design. can you please explain the coupler you have used between the motor and the shaft? Also what material you have used to make them?

Joe :)

Herbert, Your designs are really interesting. I wanted to ask if it is alright with you if I use them in my DIY project???

What power supply do you suggest? I have access to step-down transformer...

Yes Ur probably right... With Windows it could be hard as I have read so many posts relating to the inability of Windows to provide Perfect Timing.

But EMC2 runs on Ubuntu Linux with RTC...

eSilviu, Thank you for the clarification n the circuits. Highly appreciate it :)

BTW since this is a 5v Pulse I believe we cud somehow use EMC2 to generate this pulse and control the motor RPM...

Jay, Thank you for your Explanation on the Pulse sequence for RC Signaling. However I have one doubt. You said a Frame is 30ms and for Full Throttle you Send a 2ms pulse at the beginning of a Frame....

Ofcourse it does spin...n its rated 2000Watts and can do around 10K rpm. I guess that should be sufficient for light milling work... But I do not know if these Outrunner type Brushless Motors are...

I have been trying to design a DIY Spindle for milling aluminum. I came across this DIY Spindle

YouTube - DIY 3-Phase Spindle for your cnc

The Designer is using Brushless Motor (used by RC...

Thank you Gerry, for your suggestion. I am new into building bigger units like this one. I had built a 2' x 2' router and a 15" x 12" Mill earlier.You are right... with 120 ipm It will probably take...

I am designing a 9' x 5' CNC Router. I read in many posts here about the need for a support in case of ball screws longer than 5 Feet. Considering my design requires an axis which is 9 Feet long I'm...

Baggs,
I have been watchin this project with some great interest. But I have seen most projects about Bipolar Stepper drivers above 5A would jus disappear over time... I wonder if there will EVER be...

Hello Everyone :wave:,

I am a Hobby CNC Builder. One thing I have noticed about most DIY Stepper drivers is that almost all of them uses a Low value High power Resistor based current sensing. But...

Thank You James for your reply.

I had built Linistepper for my first router project (I run it at 2A per phase. But It did not have current reduction. I will add it as per your design)One thing...

Hello Everyone,

I have read soo many posts and discussions about the PIC Step driver , Linistepper as well as the AVRSTMD driver. Thanks to their respective designers it is possible for many hobby...

Thank You Al, Bob, Santa Fe Al, Dave for your advice...

The scope specs states it has USB connectivity for transferring data to a laptop. Is it similar to the Digital storage feature??? Also are...

Hi,

I am planning to buy an oscilloscope so that i can have a better understanding of how my circuits work. My projects are mainly related to cnc machines and related electronics. However i find...

Someone Anyone???

Ok lemme rephrase my question. If my Drive is driven by a PWM signal at 20KHz will I be able to run the Driver Chip (in this case L6203) at it peak Current value (which is 5A) ???

I'm trying to build a high current Bipolar stepper Driver. However I am confused with the terms Peak Current Rating and the RMS Current rating or most commercially available chips like L298 or...