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TIDM-TM4C123STEPPERMOTOR: Complete Jumper Wire Conexions

Part Number: TIDM-TM4C123STEPPERMOTOR
Other Parts Discussed in Thread: EK-TM4C123GXL, DRV8833, CC3100

Hi,

I'am trying to reply the Microstepping Stepper Motor Control With MCU and Wi-Fi for IoT Reference Design and the Driving a Stepper Motor Reference Design with High Performance MCU projects, but i don't know how to source, with the batteries, the Boards, there is any diagram that show the entire jumper wire conexions between the boards including the batteries and USB conexions?

Ih the pdf provided there is no conexion with the batteries included like shown in the image.

Many thanks!

  • Guillermo,

    Due to internal mis-assignment of post. Response will be delayed until Monday.
  • The EK-TM4C123GXL must be supplied with 5V. This is usually provided during development from the "Debug" USB connection.
  • Hi Bob,

    Can I power the DRV8833 and the TM4C123GXL from the same pins +5/GND of a protobord?

    And in the IoT case, should i power the cc3100 too?

    thanks

  • If you use the CC3100 BoosterPack, it will be powered from the EK-TM4C123GXL Launchpad. As for the DRV8833 Evaluation Module, I think that depends on what you are driving with it.
  • Hi,

    As I mentioned in the title I would like to implement both the IoT and the non-iot part of driving a Stepper motor with the TM4C123.

    As you suggest me, in both cases i only need to power the TM4C123 to do both projects right?

    I wouldn't like to damage the boards.

    Thank's

  • "Stepper Motor" alone - does not provide sufficient detail to enable a definitive answer.    A wide variety of stepper motors exist - it is the "Power requirement (both voltage & current)" of your particular stepper motor - which will determine if power from the USB cable by itself - proves adequate.

    Providing sufficient power is - most always - "Step One" - leading to project success.    Should the power prove faulty (insufficient and/or incorrect voltage) - endless "issues" will arrive - not all of them consistent - nor easy to solve.

    While my group does not use vendor's "DRV modules" - it seems reasonable that they provide a well-noted connection input for "external" Motor Power entry.    (i.e. NOT via the single USB cable) 

    Motor voltage - usually - but not always - will be higher than your Eval Board's powering voltage.    While those voltages will (likely) share the same ground connection - you must prevent the direct connection of, "Externally sourced motor voltage" to any of your board's existing voltage supplies.  (normally 5V & 3V3)    

    It is expected that a good read of the DRV manual will add (needed) focus & detail...   You MUST get your powering voltages RIGHT!     A mistaken connection (even a very brief one) may severely damage ALL of your connected boards!    (Not to ask - how I know!)

    Best to present a clear diagram here - so that vendor staff (who have detailed, inside info) may properly review & advise.   

  • Hi Guru,
    MAny Thanks for the response.
    The Stepper I will use it's a 3.15V/1.8A peak.
    It seems that I have to power the driver 8833 independently because there is a diagram in the pdf provided that sketch the power supply.
    But when you check the connections between the tm4c123 with the driver (in the pdf too), it is just suggested to connect the ground between the boards, because of that, I interpret that with the debug session active (5V provided via USB) is enought. So no well-noted connection is provided.

    I will try first to run the application just with the USB power, if it doesn't work i will supply the drv8833 independent with 5V.
    In the IoT part I will experiment too... Hopefully with no damage in the boards.
  • Hello Guru to be, Guillermo,    (that title does not prevent my posts from being (absorbed) when they hit too close to "sensitive" areas.   (such as conflicting DRM post handling).

    Guillermo Olmedo said:
    The Stepper I will use it's a 3.15V/1.8A peak.

    I am NOT in favor of your attempt to, "Run the application just with the USB power" as you note.    It is not just the "failure to work" but the potential for damage to your MCU/DRV boards - AND your PC - which raise concern.    The inductance imposed by that motor will generate voltage spikes - and an (inadequate) power source may be unable to "quench" such transients - thus opening the door to damage.

    It is "normal" to make common - the ground between your MCU and DRV boards.    I must caution you against your "joining" any board generated/regulated voltage - with an external voltage.   Most such board mounted regulators will NOT well tolerate such (outside) voltage introduction!

    While you claim, "No "well-noted" power-entry connection" is supplied - does that (not) limit the DRV board to powering ONLY - motors of 5V - or less?    That's a severe limitation - and the (award) of "DRV" to such a board - seems a "stretch."   (tickle, or coast, seem better suited)    Indeed there ARE low voltage motors which "DEMAND" high current - and powering these via a PC's USB Port/Cable has (almost) NO Chance!

  • Hi,
    Refering to the drv8833 "its aimed at driving 3.3-5V stepper motors and up to support 1.5 A (rms)". And can be powered by 2.7 to 10.8V.

    It is curious because in the block diagram designed they connect the tm4c123/drv8833 different than in a table that show the connection to...
    Well, at this point i will work carefully but i want to achieve the project.
    Thanks.
  • I thought Guru was your nickname sorry iam new in the forum
  • Nothing to be sorry about - that name bestowed by hallowed vendor.

    The fact that motor voltages in the 10V range are accommodated - MUST MEAN - that a (separate and well noted) External Power Connection Entry Point - EXISTS!    (Shame on the vendor if it is NOT "well noted.")

    Not having that board or any "inside info" - I must defer to this vendor.    I've tried my best to provide general rules - which raise the odds - of your boards' survival.    Wish you well...