Re: Low cost Controller for X,Y steppers and 1 12V solenoid port?
You should look at GRBL that will run on the Arduino Uno. This does not have all the extra code for extruders or heated bed which you do not need. [github.com]
View ArticleRe: New TFT control panel for 3D printers
Will it be possible to use the PanelDue with other control boards?? I am attempting to retrofit an industrial type printer with reprap electronics, which brings additional challenges beyond getting a...
View ArticleRe: New TFT control panel for 3D printers
Hi I-CNC, It's true that the Smoothieboard offers the convenience of being able to drive 2 extruders from just the main board; but if you have already purchased the Duet+DueX4 already, why not use...
View ArticleRe: New TFT control panel for 3D printers
Thanks DC42! I will start another thread when I get a chance so this one can stay on topic, you seem incredibly helpful with the knowledge to match, so maybe you might have some insight as to what it...
View ArticleRe: New TFT control panel for 3D printers
I started a new thread with my dilemma in the reprappers section, Titled Stratasys Dimension Retrofit. I'm sorry I 'm new here and haven't figured out how to post a link to it yet! 8-)
View ArticleRe: New TFT control panel for 3D printers
QuoteI-CNC I started a new thread with my dilemma in the reprappers section, Titled Stratasys Dimension Retrofit. I'm sorry I 'm new here and haven't figured out how to post a link to it yet! 8-) Here...
View ArticleRe: Low cost Controller for X,Y steppers and 1 12V solenoid port?
I was thinking of GRBL firmware too.but the problem is 'how to make pen assembly Up/down?' can you help me out in interfacing Solenoid with arduino?
View ArticleAre A4982 drivers supposed to be so noisy?
Just trying out some A4982 drivers (these ones) on my new M90 (RAMPS and Arduino mega). The idea was that I could run these without a fan to cool them, but I hadn't anticipated that they would be so...
View ArticleRe: Are A4982 drivers supposed to be so noisy?
Are you sure that the extra noise isn't because you are now running the motors at a higher current? The A4988 and A4982 are very similar chips. Even if the pot settings are the same, the boards may...
View ArticleRe: Are A4982 drivers supposed to be so noisy?
Yes, both boards use 0R05 ohm sense resistors, and in that video they both have Vref set to about 0.58v, which equates to 1.45 amps (the motor is a 17HS19-1684S, rated for 1.68 amps). I've also had...
View ArticleRe: Are A4982 drivers supposed to be so noisy?
See a4982 datasheet page7 top right, "low current microstepping" and maybe if you can, try shorting ROSC to ground and see if improves the noise.
View ArticleRe: Are A4982 drivers supposed to be so noisy?
@plankton, What supply voltage are you using? If it is more than 12V it will lower the switching frequency.
View ArticleRe: Low cost Controller for X,Y steppers and 1 12V solenoid port?
google is your friend http://lmgtfy.com/?q=http%3A%2F%2Fplayground.arduino.cc%2FLearning%2FSolenoidTutorial
View ArticleRe: Are A4982 drivers supposed to be so noisy?
@NoobMan, these drivers already have ROSC shorted to ground, see the schematic here @nophead, it's a 12v PC supply (a Corsair CX430M, to be specific) I have 4 of these drivers, all behave the same,...
View ArticleRe: Are A4982 drivers supposed to be so noisy?
Sorry my last post was the wrong way round. Your chopping frequency appears to be in the sonic region when it should be ultrasonic. A lower supply voltage or a higher motor voltage make it lower as...
View ArticleRe: Low cost Controller for X,Y steppers and 1 12V solenoid port?
I know arduino interfacing with solenoid only. You didnt get question- I am asking about interfacing arduino with solenoid so that it can work with appropriate G/M code. In grbl firmware they have...
View ArticleRe: Are A4982 drivers supposed to be so noisy?
Yes, pretty sure the cheap Chinese A4988's don't have ROSC shorted, and if I look very carefully (through several magnifying glasses) I can just make out a 10K resistor that seems to be labeled R4....
View ArticleRe: Are A4982 drivers supposed to be so noisy?
I don't understand how the frequency goes up with more current. It's a fixed off time of 30us, so the only thing you can do to get more current is increase the on time to get a higher mark space...
View ArticleRe: Are A4982 drivers supposed to be so noisy?
I think the resting noise is certainly dependant on some interaction between the 2 motor coils, in that first video you can see me moving the Y carriage in 1mm increments from Pronterface, you can...
View ArticleRe: Are A4982 drivers supposed to be so noisy?
I wonder if PCB layout affects the amount of interaction between the two halves and hence the noise. I seem to get far less whine with Melzi and A4988 but the switching waveforms for A4982 should be...
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