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Question #: 4680

Question: Looking at 2.5amp controller board. What amperage on 5v and dir/step logic. What are specs on Step/Dir logic[amps/volts/duration of pulse]

Current Solution

Amperage on 5V and dir/step logic is 2.5A.
The specification on the Step/Dir Logic:
Amps: Iil: min -20 uA, max 20 uA/ IiH: 100UuA
Voltage: Vil min 0V, max 0.7V/ Vih min 2.2V, max 5.25V
Duration of pulse: Step High/Low 1.9us

Here is a more info on our webpage for 2.5A modular stepper motor driver
(https://buildyourcnc.com/item/motion%20electronics-steppermotordriver-newbiehack-Motor_Drivers-2!5_Amp_modular)
as well as our 3D printer version
(https://buildyourcnc.com/item/3D-Printer-Component-electronicsAndMotors-stepper-driver-2!5a-FDMElectronics-driver2!5a).

Here is a direct link to the DRV8825 chip datasheet on the driver, for more specific information.
https://www.ti.com/lit/ds/symlink/drv8825.pdf

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Other Possible Solutions to this Question

  • I have the USB controller board and the 8825 step driver. I need a wiring diagram between the two. Specifically, what does the GND pin on the X-axis connect to? Also, what does the 5V pin on the driver connect to?

    You can find a wiring diagram here:
    https://buildyourcnc.com/item/electronicsAndMotors-electronic-component-USB-Controller-Breakout#prettyPhoto/2/

    The CP terminal is wired to the step terminal on the 8825 step driver.
    The CW terminal is wired to the direction terminal on the 8825 step driver.
    The GND terminal connects to the GND on the 8825 step driver

    The 5V connector on the driver simply powers the logic side of the chip and needs to connect to VCC pin on the keyboard jog.

    Customer Response:
    Thanks! Working now.

    Click the link to add information to this solution:
    I have the USB controller board and the 8825 step driver. I need a wiring diagram between the two. Specifically, what does the GND pin on the X-axis connect to? Also, what does the 5V pin on the driver connect to?

  • i have a breakout usb controller iam using a spindle output to active a relay 5V but it didnt work.... whats the problem, what else i need to active that realy 5v 10A?

    To control a spindle using the USB CNC interface, you will need a relay board that contains a transistor that can activate the relay with a power source with enough current that can activate the relay. This video explains all of the information you will need to develop this relay circuit:

    &index=44&list=PLE72E4CFE73BD1DE1

    Click the link to add information to this solution:
    i have a breakout usb controller iam using a spindle output to active a relay 5V but it didnt work.... whats the problem, what else i need to active that realy 5v 10A?

  • What are the specs for the stepper motors on the Bluechick? How much for shipping to Toronto, ON, Canada? Is there duty for shipping to Canada?

    Here is the answer to your first questions regarding the blueChick motors:
    https://buildyourcnc.com/FAQ/9024

    The shipping of the blueChick CNC will depend on if the machine is assembled or not. There is a duty for international orders, but I am unsure of the cost in other countries other than the US.

    Thanks

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    What are the specs for the stepper motors on the Bluechick? How much for shipping to Toronto, ON, Canada? Is there duty for shipping to Canada?

  • I connected 5Vdc power to the alternet connector of the USB Breakoutboard with the proper jumper setting and the board fried. What did I do wrong?

    Can you test the output of the 5V DC adapter to check the output voltage?

    Additional Information:
    The 5VDC voltage was generated by a PC ATX power supply and was measured (5.0VDC) just before connecting it to the controller PCB. I also verified polarity prior to powering up.

    Additional Information:
    Please call us to initiate a replacement of the USB interface. We would also like the existing USB interface to be return so that we can investigate the cause of this failure.

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    Click the link to add information to this solution:
    I connected 5Vdc power to the alternet connector of the USB Breakoutboard with the proper jumper setting and the board fried. What did I do wrong?

  • I HAVE A SIGN SHOP AND WE NEED CUT ALUMINUM, PLEXIGASS, FOAM AND OTHER MATERIALS FOR SIGNS. CAN YOU TELL ME WHAT MACHINE WE NEED? I LOOKING 4'X8' OR 5' X 10'

    The overall size of the machine, really depends on both the area available to you and also the overall size of material being used. Now our larger machines (blackFoot, greenBull, greenLean) can cut all the materials mentioned above, and if equipped with our 2.2kW spindle you will be accurate up to ten thousandths of an inch.
    Our greenBull machine does have an option for a long-z axis, that was especially designed to cut foam, but depending on the overall size it might not be a requirement for the specified request.

    Click the link to add information to this solution:
    I HAVE A SIGN SHOP AND WE NEED CUT ALUMINUM, PLEXIGASS, FOAM AND OTHER MATERIALS FOR SIGNS. CAN YOU TELL ME WHAT MACHINE WE NEED? I LOOKING 4'X8' OR 5' X 10'

  • I WIRED MY VFD (2.2KW VERSION) AND TRIED TEST RUNNING THE SPINDLE. CONFIGURED TO YOUR SPECS ON THIS WEBSITE, ONLY ISSUE IS WE GOT AN ERROR CODE. ERR 02, DO YOU KNOW WHAT IS? OR HAVE A LIST OF CODES? THANK

    Can you provide the model number of your VFD?

    Yes, I have the "YL600 - 2S - 2K20"

    It just came with a small booklet that is all in Chinese...

    Click the link to add information to this solution:
    I WIRED MY VFD (2.2KW VERSION) AND TRIED TEST RUNNING THE SPINDLE. CONFIGURED TO YOUR SPECS ON THIS WEBSITE, ONLY ISSUE IS WE GOT AN ERROR CODE. ERR 02, DO YOU KNOW WHAT IS? OR HAVE A LIST OF CODES? THANK

  • THEY ARE ASKING FOR THE ACTIVATION CODE AND SERIAL NUMBER USB BOARD. HOW CAN GET THAT INFORMATION?

    To get the activation code, all you need to do is plug the USB board into the computer using a USB cable, go to machine -> firmware -> update. After the firmware is updated the program will present to you a dialog box containing the activation code.

    Additional Information:
    MUAR-QVXU-CAYW-CBWQ


    Additional Information:
    MUIS-RQPB-PTHB-QTTB

    Additional Information:
    MUIH-EERP-IADB-TRIP

    Additional Information:
    9zYWBVf5TxKSK7hEr8gFX3EBw5wa0AMMllQqgftIAnKvZ8DXItLxaPbOB3jWvnpczl/sM/De0scRPHfSxWGmcA==

    Additional Information:
    Key: LUQR-BQYI-SCEW-QVBT

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    after i copy the code in the lower case i recived the same message (more than 8 times) ,, this is a evaluation...,, what i need to do to register properly?

    Additional Information:
    MUJR-BISM-KRDN-KKER
    056971

    Additional Information:
    0561234

    Additional Information:
    MURL-QPQU-EGBJ-FNMB

    Additional Information:
    MUCE-LFMQ-WBCW-MLHO

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    Additional Information:
    LUTA-ADVJ-FXTW-FBCE

    Additional Information:
    LUTA-ADVJ-FXTW-FBCE

    Additional Information:
    looking for registration key for MUUK-IBTW-ECTL-CJWD

    Additional Information:
    MUXO-PIYY-KNHD-RKLY

    Additional Information:
    MUUE-YYCR-FCIC-VATK

    Additional Information:
    MUUE-YYCR-FCIC-VATK

    Additional Information:


    Additional Information:
    MUEY-YLJU-OBRR-LJBV

    Additional Information:
    MUSP-JFDV-EKGQ-OVLW

    Additional Information:
    MUSP-JFDV-EKGQ-OVLW

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    Additional Information:


    Additional Information:
    MULY-XRYF-BBDN-FBWP

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    Additional Information:
    how to generate activation code richauto a11

    Additional Information:
    MUJC-LNIL-EOHS-YKNQ

    Additional Information:
    sdfd

    Additional Information:
    m l

    Additional Information:
    MUXC-RWKB-PKAL-HGNN

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    THEY ARE ASKING FOR THE ACTIVATION CODE AND SERIAL NUMBER USB BOARD. HOW CAN GET THAT INFORMATION?

  • I JUST RECEIVED A REPLACEMENT SPINDLE (2.2KW 220V). HOWEVER, WHEN ATTEMPTED IT USE THE NEW SPINDLE, WOULD ONLY REACH 1500 RPM. IS THERE SOMETHING NEED TO CHANGE ON CONTROLLER?

    VFD settings........
    1) To program the VFD, wire it up, plug it in. It takes several seconds to come to life.

    2) Push the PRGM button to enter programing mode.

    3 )Push the SET button. The display will read PD000.

    4) If you push the SET button again, it will display the present setting of PD000.

    5 )By pushing the up or down arrows, you can change the setting to whatever it needs to be. (This is just an example. PD000 needs no changes)

    6)Push the SET button again to lock in the setting of PD000 and advance to the next number, in this case, PD001.

    7) Push the SET button and it will display the present setting of PD001. Again, use the up and down arrows as necessary to set PD001, then push SET again to lock it in.

    Note: You can also scroll through the PD numbers with the up and down arrows.

    8) make all settings this way.

    9) by pushing the SET button you can scroll through the settings. First push of SET moves to the next number, second push displays it's setting, third push moves to the next PD number.

    Note- If you take too long, it will leave the programing mode on it's own. If it does, just push PRGM again to return to programing mode. Then press SET and continue what you were doing.

    10) Start with PD013. Set it to 1, which returns the settings to the factory settings.

    11) Then set PD005 to 400, PD004 to 400, and PD003 to 400 IN THAT ORDER.

    12) Then set the following: PD041=8, PD144=3000

    13) Set PD209=50

    That's it for the programing. You should get 24000RPM when you push RUN.

    Click the link to add information to this solution:
    I JUST RECEIVED A REPLACEMENT SPINDLE (2.2KW 220V). HOWEVER, WHEN ATTEMPTED IT USE THE NEW SPINDLE, WOULD ONLY REACH 1500 RPM. IS THERE SOMETHING NEED TO CHANGE ON CONTROLLER?

  • WHAT ARE CURRENT RECOMMENDED IEEE EMF OCCUPATIONAL EXPOSURE LEVELS AND GUIDELINES FOR RADIO BASE STATION ANTENNAS?

    The following answer assumes "radio Base Station Antennas" refers to base stations used for personal wireless communications services such as cellular telephone, Personnel Communications Services (PCS), and Enhanced Specialized Mobile radio (ESMR). In the United States, the frequency band allocated for base stations used for personal wireless communications is 869-894 MHz for cellular service, 851-866 MHz for ESMR, and 1930-1990 MHz for PCS. The IEEE exposure limits (maximum permissible exposure—MPE) for occupational exposure (controlled environments where exposures may be incurred by persons who are aware of the potential for exposure) are frequency dependent and are expressed in terms of incident power density. The appropriate value to compare with the MPE is the incident power density averaged over the vertical cross-section of the human body. The occupational exposure limits are also time-averaged over any six-minute interval. The IEEE C95.1-1991 MPE values are shown in the table below:
    IEEE C95.1-1991 Maximum Permissible Exposure (MPE) Values
    Frequency Band Power Density
    General mw/cm2 W/cm2
    851-866 MHz f/300 mW/cm2 2.84-2.88 28.4-28.8
    869-894 MHz f/300 mW/cm2 2.90-2.98 29.0-29.8
    1930-1990 MHz f/300 mW/cm2 6.43-6.63 64.3-66.3
    NOTE: f is in MHz
    As indicated above, these values are for continuous exposure (t > 6 minutes) and are to be compared with the spatial average of the incident power density. all base stations used for personal wireless telecommunications services in the United States are required to comply with the FCC limits (as mandated by the Telecommunications Act of 1996). The FCC limits are based on a hybrid of the IEEE limits and the 1986 recommendations of the National Council on Radiation Protection and Measurements. The FCC MPEs are the same as the IEEE values for frequencies below 1500 MHz but are capped at 5 mW/cm2 (50 W/cm2) for frequencies greater than 1500 MHz.

    Both the FCC and IEEE MPEs for exposure of the public (uncontrolled environments) are one-fifth of the above values. As above, the value to compare with the MPE is the incident power density averaged over the vertical cross-section of the human body. The averaging time for the general public is 30 minutes. Thus, for transient exposures lasting six minutes or less, the MPEs for occupational exposure and exposure of the general public MPEs are the same. For cases of simultaneous exposure from antennas operating in different frequency bands, the ratio of the spatially averaged incident power density in each frequency band to the corresponding MPE for that band is determined and the sum of all such ratios must be less than unity in order to comply.

    R. C. Petersen
    Manager, Wireless and Optical
    Technologies Safety Department

    Click the link to add information to this solution:
    WHAT ARE CURRENT RECOMMENDED IEEE EMF OCCUPATIONAL EXPOSURE LEVELS AND GUIDELINES FOR RADIO BASE STATION ANTENNAS?

  • I’M LOOKING TO PURCHASE SPINDLE AND VFD WAS CURIOS IF THE SPINDLES COME WITH COLLETS SO WHICH ONES?

    Yes, all of the spindles come with collets. The collets have a 1/4" (6.35mm) bore for end mills that have a 1/4" shank. The ER specification is different for the 1.5kW (ER-11) and the 2.2kW (ER-20).

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    I’M LOOKING TO PURCHASE SPINDLE AND VFD WAS CURIOS IF THE SPINDLES COME WITH COLLETS SO WHICH ONES?

  • FIRST OF ALL, THANKS FOR DESIGNING A WONDERFUL SITE. MY QUESTION IS: HOW DO YOU CALCULATE EME (ELECTROMAGNETIC EMISSIONS) AROUND THE TRANSMITTER (ANTENNA) AT ANY GIVEN POINT AND WHAT ARE MEASURES TO KEEP IT UNDER SAFETY CODE?

    Conceptually it is straightforward to predict the radiofrequency (RF) exposure intensity at any point in the vicinity of a cellular radio base station antenna. Simply multiply the effective radiation power times the inverse square of the distance times the relative gain of the antenna in the direction of the interest. The relative gain in different directions is know as the antenna radiation pattern and is usually available from the antenna manufacturer in graphical or tabular form.

    Unfortunately, in real life the calculations involved in base station antenna evaluations are quite complex and require expert knowledge and experience to deal with the many parameters that are involved. An excellent reference summarizing this process is the Federal Communications Commission OET Bulletin No. 65 titled "Evaluating Compliance With FCC Guidelines for Human Exposure to Radiofrequency Electromagnetic Fields," available on the Federal Communications Commission (FCC) website.

    To assess the RF hazards associated with handheld cell phones it is necessary to predict the rate of absorption in the body of radiofrequency energy, a parameter called the specific absorption rate (SAR). This is a very complex calculation, and cell phone manufacturers often rely on measurements of SAR in fluid-filled cylinders or plastic containers in the shape of a head. The FCC requires cell phone manufacturers to provide this data to FCC. You can obtain the data for your model phone on the the FCC's website. Unfortunately only cell phones manufactured in the last couple years are listed here.

    As to your question about keeping RF exposures within the safety code, please read the other questions posted on this website this matter. Cellular radio products that meet FCC requirements will be within the guidelines established by safety standards organizations for users' and public exposure to RF radiation fields.

    Gary H. Zeman, ScD, CHP

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    FIRST OF ALL, THANKS FOR DESIGNING A WONDERFUL SITE. MY QUESTION IS: HOW DO YOU CALCULATE EME (ELECTROMAGNETIC EMISSIONS) AROUND THE TRANSMITTER (ANTENNA) AT ANY GIVEN POINT AND WHAT ARE MEASURES TO KEEP IT UNDER SAFETY CODE?

  • I have an issue about the breakout board , i can't understand why i get ( -5V) instead of ( +5V) when i measure the voltage between the "Dir" pin and " com" pin

    It sounds like the meter red and black wires are being switched around. The breakout board should not be giving you a -5 volts. The voltages should be in the range of 0 and 5 volts. The voltages will change when you move the axis in one direction or the other.

    Click the link to add information to this solution:
    I have an issue about the breakout board , i can't understand why i get ( -5V) instead of ( +5V) when i measure the voltage between the "Dir" pin and " com" pin

  • DO NEED TO GET THE BIG PLANING BIT OR SURFACING AND GO OVER SPOIL BOARD MAKE SURE THAT IT IS PERFECTLY LEVEL IN RELATION ROUTER?

    Yes, that is highly recommended for all the reasons you can imagine. Say you were doing engraving, not surfacing the spoilboard will either exhibit some areas that have no engraving at all, or areas that have engraving that is too deep. If you are cutting completely through the material, then one end may be cut all the way through but the other end will not have a complete cut, or produce onion skinning on the bottom of the workpiece.

    Click the link to add information to this solution:
    DO NEED TO GET THE BIG PLANING BIT OR SURFACING AND GO OVER SPOIL BOARD MAKE SURE THAT IT IS PERFECTLY LEVEL IN RELATION ROUTER?

  • IS IT OK TO LEAVE THE VACUUM PRESSURE CONTROLLER PLUGGED IN ALL TIME WHEN PUMP SWITCHED OFF?

    I don't see anything in the datasheet for the relay that indicates an overheat condition. While the relay is engaged, the power consumption is 400 mW and I don't believe this is enough to raise the temperature faster than the heat dissipation from the metal on the leads through convection or radiation outside of the rated temperature working ranges providing that you maintain an ambient temperature range within -40°C to 85°C (with no icing or condensation).

    http://www.omron.com/ecb/products/pdf/en-g2rl.pdf

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    IS IT OK TO LEAVE THE VACUUM PRESSURE CONTROLLER PLUGGED IN ALL TIME WHEN PUMP SWITCHED OFF?

  • WHAT EFFECTS OF CELL PHONES WILL THERE BE ON YOUNGER PEOPLE OPPOSED TO OLDER PEOPLE? THE AGE OR STATE DEVELOPMENT EFFECT DANGERS A PHONE?

    Physical size of the subject affects the fraction of the total radiofrequency energy that is absorbed in the body. To account for this known effect, the maximum permissible exposure standards for radiofrequency energy were set for the worst-case condition, that is assuming the body size for maximal absorption at a given frequency. Thus the maximum permissible exposure standards are fully protective for bodies of different sizes. For more detailed information, see the answers and the cited references to questions 79, 109, 694, and 893 under the Nonionizing Radiation section of the Health Physics Society Ask The Expert Web page. Gary H. Zeman, ScD, CHP

    Click the link to add information to this solution:
    WHAT EFFECTS OF CELL PHONES WILL THERE BE ON YOUNGER PEOPLE OPPOSED TO OLDER PEOPLE? THE AGE OR STATE DEVELOPMENT EFFECT DANGERS A PHONE?

  • I PLANTED SEVERAL CONCORD GRAPE VINES DURING THE PAST FEW YEARS. GOT A COUPLE OF VERY TINY BUDS THIS YEAR, BUT THEY DRIED UP AND DIED. WHAT AM DOING WRONG?

    Everyone always assumes they are doing something wrong when a plant fails to perform to their expectations. Grapes need pollinator activity to set viable fruit, but there is a shortage of bee activity throughout the country. When the flower cannot be pollinated by bees, the resulting fruit usually atrophies. It is not your fault, just a shortcoming in nature's network.

    Click the link to add information to this solution:
    I PLANTED SEVERAL CONCORD GRAPE VINES DURING THE PAST FEW YEARS. GOT A COUPLE OF VERY TINY BUDS THIS YEAR, BUT THEY DRIED UP AND DIED. WHAT AM DOING WRONG?

  • I need wiring instructions for the breakout board you sent yesterday. It is not like the one in the videos and I don't know where to connect the 5V. No data sheet or anything.
  • Please provide detailed instructions on how to connect limit switches to CNC USB BOARD. I can not find instructions anywhere. I am new to cnc world and really need help. Thanks

    The USB Interface page: https://buildyourcnc.com/item/electronicsAndMotors-electronic-component-USB-Controller-Breakout

    On this page, there is a datasheet that explains the connection schemes for the limit switches on step 1 of the instructions. The datasheet explains single and multiple switch configurations and parallel/serial connections schemes for the NO/NC (Normally Open/Normally Closed states).

    If there is further information you need, please reply on this FAQ.

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    Please provide detailed instructions on how to connect limit switches to CNC USB BOARD. I can not find instructions anywhere. I am new to cnc world and really need help. Thanks

  • I BOUGHT YOUR BOOK AND WAS HOPEING IT HAD PLANS OR DIMENTIONS ON HOW TO BUILD A CNC HOLD 4X8 SHEET OF PLY. WILL THE IN SCALE UP?

    BYCNC Response:
    The book build was intended to be 20 inches x 40 inches. Larger machines were designed after the book build was introduced so customers would have the option to go bigger than what the book offered. Check out our larger machines on the website as the machines sizes range from 1 foot x 3 feet all the way up to 6 feet x 12+ feet.

    User Response:
    I'm not wanting to spend $3,000+ on a machine, I want to build one that will do a 4x8 sheet of wood. Will the plans in the book scale up?

    BYCNC Response:
    It is possible to scale the book build up, but the rigidity of the gantry would be questionable at that span, even if the height of the gantry structure were to be increased. The gantry design would need to be modified to become a box shape rather than a flat configuration. The kits on the site were design for those wanting a larger machine.

    Click the link to add information to this solution:
    I BOUGHT YOUR BOOK AND WAS HOPEING IT HAD PLANS OR DIMENTIONS ON HOW TO BUILD A CNC HOLD 4X8 SHEET OF PLY. WILL THE IN SCALE UP?

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