Stratasys Dimension Retrofit March 07, 2015 07:17PM |
Registered: 9 years ago Posts: 14 |
Re: Stratasys Dimension Retrofit March 07, 2015 07:32PM |
Registered: 9 years ago Posts: 14 |
Re: Stratasys Dimension Retrofit March 08, 2015 06:15AM |
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Re: Stratasys Dimension Retrofit March 08, 2015 11:57AM |
Registered: 9 years ago Posts: 14 |
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dc42
The ideal board for you might be the low-cost 32-bit controller board I am working on.
Re: Stratasys Dimension Retrofit March 08, 2015 12:37PM |
Registered: 10 years ago Posts: 14,672 |
Re: Stratasys Dimension Retrofit March 08, 2015 01:27PM |
Registered: 9 years ago Posts: 14 |
Re: Stratasys Dimension Retrofit March 08, 2015 02:31PM |
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Re: Stratasys Dimension Retrofit March 08, 2015 03:48PM |
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Re: Stratasys Dimension Retrofit March 08, 2015 03:53PM |
Registered: 9 years ago Posts: 14 |
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I-CNC
Or could I re-define the pins currently used by the axis endstops to be thermistor inputs, and move the axis endstops to the pins on the expansion formerly used for the thermistor inputs?
Re: Stratasys Dimension Retrofit March 08, 2015 04:37PM |
Registered: 13 years ago Posts: 44 |
Re: Stratasys Dimension Retrofit March 08, 2015 05:03PM |
Registered: 10 years ago Posts: 14,672 |
Quote
I-CNC
Oops, I missed the fact that this won't work since the thermistor requires 2 inputs but the endstop only has 1 .
Re: Stratasys Dimension Retrofit March 08, 2015 08:42PM |
Registered: 9 years ago Posts: 14 |
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I-CNC
Ah, nice catch..... Yes, one of the thermistors would be replaced by the thermocouple, so I could eliminate the X4 board.
The extruders and hotends will be some version of reprap units, so driving them from the on board drivers shouldn't be a problem.
So based on that scenario, the plan of action required to complete this portion of the project would look like this:
A ) Eliminate the X4
B ) Re-define the Duet to run the 2 extruders from it. Abandon the other 2 on board stepper drivers.
C ) Redefine the pins on the expansion that are currently used for 3 of the extruder stepper drivers to provide signal to the external axis stepper drivers.
Questions:
1 ) Doing the above would require the thermocouple to used? Or could I re-define the pins currently used by the axis endstops to be thermistor inputs, and move the axis endstops to the pins on the expansion formerly used for the thermistor inputs?
2 ) It looks like there are 5 SPI pins on the expansion (pin #s 26 - 30 on the Duet header schematic) - Am I reading this correctly?
Re: Stratasys Dimension Retrofit March 09, 2015 04:49AM |
Registered: 10 years ago Posts: 14,672 |
Re: Stratasys Dimension Retrofit March 09, 2015 08:00PM |
Registered: 9 years ago Posts: 14 |
Re: Stratasys Dimension Retrofit March 10, 2015 04:48AM |
Registered: 10 years ago Posts: 14,672 |
{ PIOC, PIO_PC27, ID_PIOC, PIO_OUTPUT_0, PIO_DEFAULT, PIN_ATTR_DIGITAL, NO_ADC, NO_ADC, NOT_ON_PWM, NOT_ON_TIMER }, // PIN X1
Re: Stratasys Dimension Retrofit March 10, 2015 04:46PM |
Registered: 9 years ago Posts: 14 |
Re: Stratasys Dimension Retrofit March 11, 2015 05:00AM |
Registered: 10 years ago Posts: 14,672 |
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I-CNC
1) Do I change the platform.h file, or platform.cpp, or both?
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I-CNC
2) Leaving all pins that were assigned as stepper signals, just reassigned, would insure that there wouldn't need to be any changes to how the pins are configured, since they are still doing what they were doing, just for different extruders and axis. Is this correct??
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I-CNC
3) I am assuming that the order the pins are defined are like so:
#define STEP_PINS {14(X), 25(Y), 5(Z), X2(E0), 41(E1), 39(E2), X4(E3), 49(E4)}
Is this correct??
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I-CNC
4) Is the following line the place I change the direction of the motors if the axis move backwards from what is intended??
#define DIRECTIONS {BACKWARDS, FORWARDS, FORWARDS, FORWARDS, FORWARDS, FORWARDS, FORWARDS, FORWARDS}
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I-CNC
5) Looking at the following line, It looks like the Z axis is disabled, or am I reading it wrong??
#define DISABLE_DRIVES {false, false, true, false, false, false, false, false}
Re: Stratasys Dimension Retrofit March 11, 2015 09:06PM |
Registered: 9 years ago Posts: 14 |
Re: Stratasys Dimension Retrofit March 16, 2015 03:11AM |
Registered: 9 years ago Posts: 14 |
Re: Stratasys Dimension Retrofit March 16, 2015 05:07AM |
Registered: 10 years ago Posts: 14,672 |