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miniEngine 2 problems
#21
(01-29-2014, 12:14 AM)Sascha Wrote: No I didn't should I? I will try this in the next days.

Yes, as mentioned in the Update section of the documentation. The fix is actually done in the StepperMotor library I wrote. This is why your system is still behaving strange Smile

Let me know if it works.

Cheers,
Airic
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#22
Now it works a designed Big Grin
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#23
(01-29-2014, 08:03 PM)Sascha Wrote: Now it works a designed Big Grin

Great to hear that the problem is fixed and thanks for the update!
Airic
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#24
Hi, I've just mounted my MiniEngine 2, but I'm not able to find the correct values for calibrating my steppers?

This is the spesifications of my steppers: Nema17 Stepper Motor DC 5V 1.2A 2-phase 4-wire 2.6kg.cm 1.8 Degree.
I'm using a 12v Power supply. and my motors are acting Perfect in other testarduino programs, I also use BED
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#25
(02-04-2014, 10:11 PM)LarsErik Wrote: Hi, I've just mounted my MiniEngine 2, but I'm not able to find the correct values for calibrating my steppers?

This is the spesifications of my steppers: Nema17 Stepper Motor DC 5V 1.2A 2-phase 4-wire 2.6kg.cm 1.8 Degree.
I'm using a 12v Power supply. and my motors are acting Perfect in other testarduino programs, I also use BED

Hey Lars,
if you don't installed DIP switches, the Big Easy Driver uses 1/16 steps.
So your calculation should be:
1,8 degrees = 200 full steps per full round.
With the MiniE you need 200 * 16 steps per full round.
To calculate your steps /cm you need the diameter of your toothed wheel.
(1/16 steps) / (Diameter * Pi )
Example:
3200 (1/16) steps / (0,12cm diameter * 3,14 ) = 0,3768 cm per full round of the stepper.

If your motor is not running by jogging it, use the potentiometer at the bigeasydriver, it helps me a lot!!

@Airic correct me if i am not right.

Cheers
Sascha
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#26
(02-04-2014, 10:45 PM)Sascha Wrote:
(02-04-2014, 10:11 PM)LarsErik Wrote: Hi, I've just mounted my MiniEngine 2, but I'm not able to find the correct values for calibrating my steppers?

This is the spesifications of my steppers: Nema17 Stepper Motor DC 5V 1.2A 2-phase 4-wire 2.6kg.cm 1.8 Degree.
I'm using a 12v Power supply. and my motors are acting Perfect in other testarduino programs, I also use BED

Hey Lars,
if you don't installed DIP switches, the Big Easy Driver uses 1/16 steps.
So your calculation should be:
1,8 degrees = 200 full steps per full round.
With the MiniE you need 200 * 16 steps per full round.
To calculate your steps /cm you need the diameter of your toothed wheel.
(1/16 steps) / (Diameter * Pi )
Example:
3200 (1/16) steps / (0,12cm diameter * 3,14 ) = 0,3768 cm per full round of the stepper.


If your motor is not running by jogging it, use the potentiometer at the bigeasydriver, it helps me a lot!!

@Airic correct me if i am not right.

Cheers
Sascha

Works like a charm Smile thanks!
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#27
Thumbs Up 
(02-04-2014, 10:45 PM)Sascha Wrote: Hey Lars,
if you don't installed DIP switches, the Big Easy Driver uses 1/16 steps.
So your calculation should be:
1,8 degrees = 200 full steps per full round.
With the MiniE you need 200 * 16 steps per full round.
To calculate your steps /cm you need the diameter of your toothed wheel.
(1/16 steps) / (Diameter * Pi )
Example:
3200 (1/16) steps / (0,12cm diameter * 3,14 ) = 0,3768 cm per full round of the stepper.

If your motor is not running by jogging it, use the potentiometer at the bigeasydriver, it helps me a lot!!

@Airic correct me if i am not right.

Cheers
Sascha

Thumbs up!
I'll add this formula to the documentation:

steps / cm = (steps per full rotation) / (Stepper wheel diameter * Pi )

Airic
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#28
I have a problem, after install software and check all conections, when I conect 12V the screen stay blank.
Any suggestion?
Thanks.



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#29
Probably my problem is that LCD's version is 1.3, not 2.4 ?
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#30
(02-15-2014, 12:01 PM)arian Wrote: I have a problem, after install software and check all conections, when I conect 12V the screen stay blank.
Any suggestion?
Thanks.




Did you set the jumper 16-bit mode... Took me a while to figure out why mine wasn't working...
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