Makeblock mDrawBot Kit Dimensions

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mDrawBot FAQs
Q1. Why my PC can't install the driver of the Makeblock Orion successfully?
A: If your PC can't install the driver for Makeblock Orion automatically, please
manually download it and install.
Dowonload link: http://learn.makeblock.cc/driver_installation/
To check whether the driver has been installed successfully:
1. Open Run dialog (win + r)
2. Input devmgmt.msc to open the Device Management.
3. Check the "COM X" (X=2.3.4···). If the driver hasn't been installed successfully,
you will see a question mark or an exclamatory mark.
Q2. How to adjust the torque and the current of the stepper motor? (Issues that
may occur when the torque and the current are not correct: step losing, abnormal
noise, timing belt fails to move, abnormal drawing, etc)
A: If you find the output torque of the stepper motor being inadequate, try to: Use
the cross screwdriver and turn the current-limiting button gently to the + direction
to increase the torque value of the stepper motor. To be more specific, use the cross
screwdriver to turn clockwise the button until you feel the obvious increase of the
resistance, then turn the button back for about 5%.

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In the meantime, you will also need to update the software.
Download here https://github.com/Makeblock-official/mDrawBot. (Note: The new
version has a new function of "Speed-Adjust Button", which can help slow down the
speed when the motor starts shaking heavily. We strongly recommend updating to
the newest version of the software.

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Q3. How to fix the problem of incorrect speed and ratio?
A: The micro stepping the mDraw adopts to control stepping operation is HHH1/16.
Thus if you find the speed and ratio are incorrect, please check the setting. Here are
the setting chart and the default setting
picture.http://wiki.makeblock.cc/index.php?title=Me_Stepper_Driver
DIP switch setting introduction
You can use Dip switch to set the microstep resolution of stepper motor.
More details is shown below table.
MS1
MS2
MS3
Microstep Resolution
Excitation Mode
L
L
L
Full Step
2 Phase
H
L
L
Half Step
1-2 Phase
L
H
L
Quarter Step
W1-2 Phase
H
H
L
Eighth Step
2W1-2 Phase
H
H
H
Sixteenth Step
4W1-2 Phase

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Q4: What if the height difference of the Pen Lift Mechanism has exceeded the
required one? How can I fix it?
A: Make sure the desktop you are using is flat and level enough. If not, please
change to another one. If the problem still exits, please check and fix the levelness
of Plate 0324-184 manually.
Q5: My mScara is not drawing correctly and accurately. How to fix it?
A: Measure the length of the Arm B of mScara and update it to the software.
Change the speed setting of the software if any shaking occurs.
Q6: Why the photo the mSpider drew is not correct or not with the correct
length-to-width ratio?
A: Measure the length and the width of the photo you want to draw. Enter them to
the software. (For more detailed instruction, please refer to the mSpider User
Guide)
1.H 2.H 3.H
H
L

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Q7: What if the direction of the drawing is not correct, such as left-and-right
reversed, upside-down, etc?
A: Make sure all the wirings are correct and you've done the wirings exactly as
required as the User Guide. (For more details, refer to the wiring section of the User
Guide)

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Q8: We are sorry that we made a mistake regarding the 20th step of the mEggBot
Section of mDrawBot's User Guide(Old Version). A new version of the mDrawBot's
User Guide has been corrected.
If the timing belt is installed as the Step 20th, you will find that it's too loose to
move.
Here's the correct way.

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Q9: About the setting of mDrawBot and mCar.
1. Make sure the bilateral symmetry of the wheel on the left and right side. Measure
the length of AB.

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2. Below is the side view. Make sure the tip of the pen is pointed to the center of the
contact surface of the wheel and the ground. Adjust the screw to achieve this goal.
(It's crucial that the tip of the pen is pointed exactly to the center O shown in the
diagram)
The Width(mm) in the software refers to the length of AB (mentioned above), enter
the length and click OK. (Make sure the accuracy of AB)

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A. Make sure the bilateral symmetry of the wheel on the left and right side. Measure
the length of AB.
Q10: The pen comes with the mDrawBot is a water marker pen, which may be
erased accidently. Any solution for this?
A: The reason why we provide water pen is to make sure the reuse of both white
board and plastic egg. To avoid the problem mentioned in the question, you can use
a permanent maker pen which can only be erased with ethyl alcohol (alcohol
concentration>95%) or acetone.
Thank you for your understanding. If any questions, please contact us freely.
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