Stepper motor heating and series/parallel watts
If steppers are run in series, the voltage per stepper drops off - supposedly to half. But can that reduction be made up partially by increasing current for series steppers? (Assume the driver can...
View ArticleSteppers aren't moving
Hi guys, As you can see on topic my stepper aren't moving. I'm working with RAMPS 1.4 and DRV8825(1/32 microsteps). Here's a list of what I've been trying; -my fan is working termocouples read temp....
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Re: Steppers aren't moving
sounds like your wiring order is wrong.. should be as follows 1714_DRV8825%20wiring%20diagram.png Ie B1 and B2 are one coil and A1 and A2 are the second coil.
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Re: Steppers aren't moving
Thanks for your answer, but the wire order is written on ramps and same as I said. RAMPS-board-met-polulu-drivers-A4988.jpg
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Re: Steppers aren't moving
Your mistaken there are 4 pims 2B 2A this is the first coil and 1A 1B this is the second coil Arduinomega1-4connectors.png
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Re: Steppers aren't moving
I'm pretty sure that you're right. I'm going to try it when I get home and it's going to work but I've made my connection with this picture and it looks like A's and B's are on the same coil. I think...
View ArticleRe: Steppers aren't moving
The stepper drivers used can only drive 4 or 6 wire steppers. 4 wires you just identify the coils and plug them in 5 wires you would need to cut the joining center taps (inside the motor) , 6 wires...
View ArticleRe: Steppers aren't moving
I'm saying is this picture looks like 1a(a+) and 2a(a-) are on the same coil.
View ArticleRe: Steppers aren't moving
a+ and a- are one coil, but it should be on 1A and 1B on the ramps. The number in 1a or 2a is the coil identifier, the letter is either end of the coil. So 1A and 1B is one coil and 2A and 2B is the...
View ArticleRe: Stepper motor heating and series/parallel watts
The drivers used in 3D printers are constant current drivers. As long as the supply voltage is high enough, the motor will get the current that you set. If you connect the moors in parallel, they...
View ArticleRe: Stepper motor heating and series/parallel watts
Thanks DC42. I see my error. I halved the V for each motor. But if current taken to 2 A, with 2.5ohms per motor, V drop per motor is 5V....above the motor V rating. Your explanation is clear.
View ArticleRe: Stepper Motors not Moving
1. Neither stepping motor turns. Consider the power circuit. Control signal input circuit, because the motor circuit problem can be basically eliminated. 2. The power problem is also relatively...
View Article23HM20-0383s with drv8825 drivers
I am building a 3d printer with 23HM20-0383s Nema 23 stepper motors, drv8825 drivers and a ramps 1.6 plus. My question has to do with adjusting the Vref of the 8825s. The data sheet for the motors...
View ArticleTMC2130 Extremely loud
Hey everyone. So, I finally decided to install my brand new TMC2130 drivers. Everything went well, they are recognized with M122. Settings in marlin are mostly default, just enabled the TMC2130...
View ArticlePrusa i3 Ramps to Motor wiring, 2015/2016 model
I received a Prusa i3 printer in Jan 2016, just now getting around to assembling it. Control board for the motor connector is documented as [1A - 1B - 2A - 2B] The 4 pin connector is...
View ArticleRe: Prusa i3 Ramps to Motor wiring, 2015/2016 model
"Assuming 1A/1B and 2A/2B are the coils, " correct do not get hung up on colors, stepper motor manufacturers use what ever colors they have at the time and even switch mid runs,
View ArticleRe: Prusa i3 Ramps to Motor wiring, 2015/2016 model
As long as you get the coils right (1A and 2A together, etc.), then things will work, you just have to swap wires on one of the coils to get the stepper to go the right direction. Yeah, you'll have to...
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Re: Prusa i3 Ramps to Motor wiring, 2015/2016 model
Got the wires - made a mistake and didn't measure pin pitch on both ends. Turns out only motor needed 2mm, control board needed 2.54mm. Made one up with a 4-pin crimp housing from Pololu.com (just a...
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