I AM TAKING THE FINAL YEAR PROJECT IN BASE STATIONS AND AIR INTERFACE. WOULD LIKE TO HAVE SOME INFORMATION.

Question #: 261

Question: I AM TAKING THE FINAL YEAR PROJECT IN BASE STATIONS AND AIR INTERFACE. WOULD LIKE TO HAVE SOME INFORMATION.

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The Federal Communications Commission (FCC) is the primary federal agency responsible for safety aspects of modern-day wireless telecommunications systems. The FCC's Internet address is shown below. Recently FCC published an excellent report, cited below, to assist citizens and local governments dealing with siting of telecommuncations towers. This report contains charts and figures describing the characteristics and performance of telecommunications antennas. The report also contains practical guidance on application of provisions of the Telecommunications Act of 1996, which is the governing legislation regarding safety and siting of wireless telelcommunications facilities. Web page: RF Safety Program Page. Report title: "A Local Government Official's Guide to Transmitting Antenna RF Emission Safety: Rules, Procedures, and Practical Guidance." The Local and State Government Advisory Committee (LSGAC) and the FCC have developed this guide to aid local governmental officials and citizens in understanding safety issues related to radiofrequency emissions from telecommunications towers. Gary Zeman, Sc.D., CHP Lawrence Berkeley National Laboratory

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I would like to return the Mach3 USB CNC Interface I just received. I am not continuing the project requiring it.
Ok. Email me at customerservice@buildyourcnc.com to setup the return.

Thanks.
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I would like to return the Mach3 USB CNC Interface I just received. I am not continuing the project requiring it.
I purchased a 3040 CNC router off eBay a year ago and would like to change the controls. The steppers are 185oz.in motors. My question do i need to purchase a interface board and break out boards?
When dealing with 3rd party machines, we have a universal setup that will fit almost any other machine, although please take in consideration the specifications in which your stepper motors and drivers are used and set to!
Now changing the controls, would be more or less changing the Breakout board/interface board to a different one that might use a different program to run your machine. Usually you will not need to change your interface board or breakout board, unless the 3rd party manufacture made it specifically to that set up.
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I purchased a 3040 CNC router off eBay a year ago and would like to change the controls. The steppers are 185oz.in motors. My question do i need to purchase a interface board and break out boards?
I LIVE IN ITALY AND WISH TO KNOW MORE ABOUT RADIATIONS CAUSED FROM MOBILE TELEPHONES. TELECOM WOULD LIKE PLACE A WIRE-ANTENNA THE HEARTH OF MY TOWN, I'M AFRAID IT. WHICH KIND RISK HEALTH COULD IT CAUSE? THANK YOU IF WILL SEND ME SOME INFORMATION SCIENTIFIC ARTICLES THIS PROBLEM!
See the question on our "Ask the Expert" question-and-answer list on cellular towers under nonionizing radiation for a discussion of RF safety issues associated with cellular radios. The technology underlying cellular radios and base station antennas is similar around the world, but there are differences in systems design and RF safety limits in different countries. For a summary of cellular radio RF safety issues with attention to international differences see the excellent Web page, Cellular Phone Antennas (Base Stations) and Human Health, by John E. Molder, Ph.D., from the Medical College of Wisconsin. Gary H. Zeman Sc.D., CHP
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I LIVE IN ITALY AND WISH TO KNOW MORE ABOUT RADIATIONS CAUSED FROM MOBILE TELEPHONES. TELECOM WOULD LIKE PLACE A WIRE-ANTENNA THE HEARTH OF MY TOWN, I'M AFRAID IT. WHICH KIND RISK HEALTH COULD IT CAUSE? THANK YOU IF WILL SEND ME SOME INFORMATION SCIENTIFIC ARTICLES THIS PROBLEM!
I have a project very similar to cnc machine. I need 3 lead screws of 1.8 m with all set (supports, bearings...etc). and 3 NEMA 42 motors that I can connect with. if those are available, I need the information about shipping to Oman or UAE.
We carry several sizes of lead screw and stepper motors on our website, for example here https://buildyourcnc.com/Item/mechanical-leadscrews-lead-screw-!5-5-starts-10-tpi and here https://buildyourcnc.com/ProductSearchResults.aspx. Please call us at 281-815-7701 to discuss the particular lengths you would need and shipping options.

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I have a project very similar to cnc machine. I need 3 lead screws of 1.8 m with all set (supports, bearings...etc). and 3 NEMA 42 motors that I can connect with. if those are available, I need the information about shipping to Oman or UAE.
I have a blacktooth laser engraver. The Y Axis stepper motor needs to be replaced. Can you please provide me with the information I would need to replace this motor.
Yes, if you need a replacement part on your machine please call us at 281-815-7701.
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I have a blacktooth laser engraver. The Y Axis stepper motor needs to be replaced. Can you please provide me with the information I would need to replace this motor.
The motherboard on the computer I bought from you went out. What would you suggest. I have a laptop, could I use it and use a Mach3 USB interface board?
Yes, you can use a laptop if you have a controller that uses a USB, like the Mach3 USB card. If you don't have that, you can purchase that part here:
https://www.buildyourcnc.com/item/electronicsAndMotors-electronic-component-breakout-Mach3-USB-Board

If you have a controller board that connects to a 25 pin connector, modern laptops will not be able to connect to that port.

How old is your CNC computer system?

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The CNC computer system is 2013 (5 years). The built in video card went out. I will order the Mach3 USB card. Thank you.

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You're welcome
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The motherboard on the computer I bought from you went out. What would you suggest. I have a laptop, could I use it and use a Mach3 USB interface board?
I have your breakout board with relay parallel port , I have a vacuum, light on router and air pump I want to also hook up to board, can I hook those up to board and also could I had reylays to each one, what is the best way to figure this out any information would be great. Thanks
Here is how to connect your router to the parallel breakout board through the on-board relay. You will need a spare extension cord. You will need to remove a portion of the outer jacket of the extension cord to expose the white, black and green wires (white = neutral, black = live and green = ground), understanding that the neutral and live create the completed circuit.

See this image of a similar connection. The terminal has the same connections.
https://www.buildyourcnc.com/images/vacuum-pressure-controller-relay-terminals-700.JPG

Image of the relay terminal:
https://www.buildyourcnc.com/images/breakoutboardrelayNONC.PNG

The live/black wire would be cut and one end of the cut would be secured into the P terminal and the other cut end would be secured into the S terminal. The live and ground wire would be uncut and travel from the plug to the router.

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You can also connect other high powered devices to the breakout board using any of the output terminals. You will need to supply extra relays like the one shown here:
https://www.buildyourcnc.com/item/electronicsAndMotors-breakout-Relays-relay-board-250V-12A-5V

Or you can find SSRs (Solid State Relays) that will accept 5v to drive the relay coil. Make sure the SSR will protect the 5V line from Back EMF as there is a coil in the relay. The one we sell contains a fly-back diode to protect the 5v terminal.
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I have your breakout board with relay parallel port , I have a vacuum, light on router and air pump I want to also hook up to board, can I hook those up to board and also could I had reylays to each one, what is the best way to figure this out any information would be great. Thanks
Hi i am interested in the greenBull 6x with Hybrid Laser/Spindle Head (includes Spindle/VFD and Laser Components) - USB Interface (Long Z). I was wondering how much it would cost to get this machine to NZ?
You can use our shopping cart to determine the shipping. Add the machine and the parts you want to purchase, enter your shipping address and click on the Calculate Shipping Button to get a price for shipping. The shipping charges are determined directly from the carriers at the time of pressing that button.

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Hi i am interested in the greenBull 6x with Hybrid Laser/Spindle Head (includes Spindle/VFD and Laser Components) - USB Interface (Long Z). I was wondering how much it would cost to get this machine to NZ?
I have a 4x8 CNC and would like to cut my own parts for the Blackfoot. What is the price for the plans and the electronics ?
The available options for the blackFoot, is only structural components with hardware, and structure components/hardware with electronic components.
However we currently do not have any plans available for public use/distribution.
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I have a 4x8 CNC and would like to cut my own parts for the Blackfoot. What is the price for the plans and the electronics ?
Can I purchase a computer off Amazon (I have a machine I want to use) and still use the USB interface to drive it with LinuxCNC?
You will need to build the table unit for your machine. There are instructions on how to do this at the bottom of the product page here, https://www.buildyourcnc.com/Item/cnc-machine-blackFoot-v4
There is no estimate on how much this will cost though, since there are too many variables involved to do this.

- PC with parallel port and USB port
- 20awg stranded wires for the motors - http://www.buildyourcnc.com/electronicscombo.aspx
- 18awg stranded wires for power supply to drivers
- 24awg stranded wires for breakout board to drivers
(location and spacing of components varies from one person to another, so we do not provide cables/wires)
- General purpose extension cord (cut the female end off) to provide power to power supply
- USB cable to power breakout board
- Parallel cable to communicate to breakout board
- Router
- (optional - instead of router) Spindle with power inverter http://www.buildyourcnc.com/SpindlesAndAccessories.aspx
- (if purchasing spindle with inverter) General purpose extension cord (240v) (cut the female end off) to provide power to power inverter
- End Mill(s) http://www.buildyourcnc.com/ProductsEndMills.aspx
- CAD, and/or CAD-CAM software (to produce geometry, machine operations, and g-code) http://www.buildyourcnc.com/CNCsoftware.aspx
- CNC control software (to read g-code and control machine) http://www.buildyourcnc.com/CNCsoftware.aspx

This answer is applicable to most of our machines with the exception of the greenLean and the blueChick since those machines are equipped with a table structure.

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Can I purchase a computer off Amazon (I have a machine I want to use) and still use the USB interface to drive it with LinuxCNC?
CNC Wood Lathe project - Would like to have the guts to a 2 axis DIY lathe. Can you let me know of a possible one stop shop solution? Would like it to be at least 40" on the X axis.
There are many possible options for making a lathe. Typically, a lathe is run by a spindle at the head stock (which you can find here https://buildyourcnc.com/SpindlesAndAccessories.aspx) which will rotate the object rather than a fourth axis, however you will need to create or buy the clamp mechanism of a regular lathe to hold the object in place. You will be able to control the on/off either manually or via software, but the speed (RPM) will have to be controlled manually.
You can create a more indexed alternative to a lathe by using our rotary axis at the head stock (found here https://buildyourcnc.com/item/axes-4th). either way, the tail stock center can be found here https://buildyourcnc.com/item/axes-4th. This will give you full control of the turning via software.

You will want to use linear rails and their associated bearing blocks (found here https://buildyourcnc.com/item/mechanical-rails-HIWIN-Linear-20mm and herehttps://buildyourcnc.com/item/mechanical-rails-linear-guide-rails-20mm) to run along the length of the item being turned and you will need linear rails to be run perpendicular (towards and away) to the object being turned that would hold either the blade (for a traditional lathe) or a spindle (for the indexed version containing the rotary axis).

Where you have linear rail, you will also need lead screw (found here https://buildyourcnc.com/item/mechanical-leadscrews-lead-screw-!5-5-starts-10-tpi) to transmit motion using motors (and drivers) of your choice also with various options (found here https://buildyourcnc.com/category/nema and here https://buildyourcnc.com/category/driver). You will need 2 - Drivers (either 3.0A or 6.0A, the 6.0A driver will be for our larger motors hence you will have more torque available) and 2 - Motor's (either our Nema 24's or Nema 34's, the Nema 24 will work with our 3.0A driver while the Nema 34 will work the 6.0A)
To control these motors, you will need a parallel breakout board and Mach 3 software to control the two axes (or three with the rotary axis) found here https://buildyourcnc.com/item/electronicsAndMotors-parallel-breakout-relay and https://buildyourcnc.com/item/control-SOFTWARE-mach3.

You will need couplings to couple the lead screws to the motor shafts (found here https://buildyourcnc.com/couplings.aspx). All of the miscellaneous hardware you need can also be found here https://buildyourcnc.com/Hardware.aspx.
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CNC Wood Lathe project - Would like to have the guts to a 2 axis DIY lathe. Can you let me know of a possible one stop shop solution? Would like it to be at least 40" on the X axis.
HAVE PORTER CABLE 7518 ROUTER ON MY CNC AND WOULD LIKE TO KNOW IF YOUR ER20 COLLET NUT, FOR THE CABLE, WILL FIT ROUTER.
Yes, our porter cable collets and nuts will fit the porter cable 7518.

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HAVE PORTER CABLE 7518 ROUTER ON MY CNC AND WOULD LIKE TO KNOW IF YOUR ER20 COLLET NUT, FOR THE CABLE, WILL FIT ROUTER.
I would like to know what the lowest rpm that can be acheived with the 2.2kw spindle and inverter and still have enough torque to drill
According to the supplier of the 2.2 kW spindle, the safest operating speed for the spindle is 6000 RPM. The supplier also stated that theoretically, the spindle can operate from 0 to 24,000 RPM. I am continuing a dialog with the supplier to delve deeper into understanding the configurations and ramifications of such configurations for operations outside of the safe boundaries into the "theoretical" ranges.

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I would like to know what the lowest rpm that can be acheived with the 2.2kw spindle and inverter and still have enough torque to drill
I live in China and my company would like to buy the 40w laser cutting machine. I am wondering if you can help us assemble and maintain the machine in China? Do you have any service point here? Thank you
Currently our only location is in Katy, Texas at this current time, we can help you assemble the machine and if any issues occur we can always help you with the problems, but will have to be managed through email or phone (which ever is your preference).
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I live in China and my company would like to buy the 40w laser cutting machine. I am wondering if you can help us assemble and maintain the machine in China? Do you have any service point here? Thank you
I live in North Houston by Lake Conroe, Anyone around here have a 4x8 or larger machine that would not mind doing some simple cutting for me for a project?
I would try asking this in our fourms page: http://buildyourtools.com/phpBB3/
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I live in North Houston by Lake Conroe, Anyone around here have a 4x8 or larger machine that would not mind doing some simple cutting for me for a project?
How do I get started I would like to build a cnc router. Making the machine I can do, but I am weak on cad,cam and mach3. I am thinking about a 4’x4’. Do you have plans I can buy?
We are developing plans for our machine, but they are not completed yet. Please let me know if you would like to be added to our list of customers wanting plans. Thanks,

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If you have specific questions regarding CAD, CAM and Control, please add another question to the customer service and I will answer them in detail.
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How do I get started I would like to build a cnc router. Making the machine I can do, but I am weak on cad,cam and mach3. I am thinking about a 4’x4’. Do you have plans I can buy?
I have a planetcnc USB controller to run my project and when I start the 240v router the USB connection shuts down.
The USB controller will only work with the Planet-CNC software. This software is well made and will provide great functionality. The planet-cnc software delivers instructions to the microcontroller on the board and the microcontroller will send out the pulse trains needed to move the machine correctly.

There are two main alternatives if you want to use the mach3 software:
First, get a parallel port card and add it to your computer and get a parallel breakout board. If you have a laptop/notebook computer, this will not be possible.
Second, if you have a laptop, or really want to use the USB as the main interface for controlling the machine, you will need to get the smoothstepper board which works with mach3. The price combination is much higher than the USB controller with planet-cnc, but will work with Mach3.

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The planet cnc controller can be prone to electrical interference and has been known to cause such problems. In the first instance try to use a quality double sheilded USB cable, hopefully this will fix your problem. Alternatively you may need to sheild your limit switch, estop and or motor cabling. My pick is that a quality USB cable will fix it though, worked for me.
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I have a planetcnc USB controller to run my project and when I start the 240v router the USB connection shuts down.
I have a planetcnc USB controller to run my project and when I start the 240v router the USB connection shuts down.
The USB controller will only work with the Planet-CNC software. This software is well made and will provide great functionality. The planet-cnc software delivers instructions to the microcontroller on the board and the microcontroller will send out the pulse trains needed to move the machine correctly.

There are two main alternatives if you want to use the mach3 software:
First, get a parallel port card and add it to your computer and get a parallel breakout board. If you have a laptop/notebook computer, this will not be possible.
Second, if you have a laptop, or really want to use the USB as the main interface for controlling the machine, you will need to get the smoothstepper board which works with mach3. The price combination is much higher than the USB controller with planet-cnc, but will work with Mach3.

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The planet cnc controller can be prone to electrical interference and has been known to cause such problems. In the first instance try to use a quality double sheilded USB cable, hopefully this will fix your problem. Alternatively you may need to sheild your limit switch, estop and or motor cabling. My pick is that a quality USB cable will fix it though, worked for me.
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I have a planetcnc USB controller to run my project and when I start the 240v router the USB connection shuts down.
I have the same water for months to cool the spindel and it's blocked, what can I use to unblock it? I would not like to damage any seal or gasket inside.
Usually this does happen, we tend to clean the water out roughly every month, however we use our machine 8hrs a day, 7 days a week non stop. So Depending on your usage it might be every 3-5 months when you might have to change the water.

We use a small air compressor to blow the build up through the spindle.
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I have the same water for months to cool the spindel and it's blocked, what can I use to unblock it? I would not like to damage any seal or gasket inside.