Best posts made by sozkan

Hello All,

I just wanted to share the successful result:

https://youtu.be/2QNMd8EgGmQ

The only target for me right now is filament detection. 5 kg filament consumed so fast with no sense.

@Dougal1957
Hi, here is the link of the video of breef info about components and measurement proof of belt teeth .
Youtube Link: for the homing calibration and teeth

@dc42 @jay_s_uk

Dear All,

I have prepared a G-code reversing tool Console App just to use to reverse motion of the print to be able to test best position to rewind Using C#. Please feel free to use the source if you find it useful. for sometimes it will help us to work manually. But I still required the tool DWC plugin or SBC function.

https://github.com/tunerji/G-Rewind

While reversing code, the code blocks sharing Feed rates and Z height had to be critically analyzed. That's why it was a bit important to review the code a few times.

However, it is temporary solution to me and we still need to make interface buttons and functions to run drive back and forward. The method might need to different way of capturing feed-rate and Z values in real time, once reversed, it use that one.

I assume if we tag all line having G0 and G1 commands as F and Z height of each X and Y coordinates, it might be easy to produce reversing go code in real time at the client side.

However like my case, if paused, machine might lift head and we might need to disable macros like pause and resume too.

as you may notice, in the g-code, Feed rate and Z coordinate has to be shifted and placed on right place, by respecting their groups like G0 and G1 and F Values. My reversing app does that if you like to inspired from there.

Example G-Code Snippet

G1 F1500 X0.00 Y-550 Z1.25  ; Move to coordinates with feed rate of 1500
G0 F4000 X0.00 Y0.00   ; Rapid move to new coordinates
G1 F1200 X476.314 Y275      ; Controlled move to new coordinates
G1 X0.00 Y0.00              ; Move back to start point

Reversed G-Code Example
After processing with G-Rewind, the G-code might look like this:

G1 X0.00 Y0.00 Z1.25        ; Move back to start point
G0 F4000 X0.00 Y0.00   ; Rapid move to previous coordinates
G1 F1500 X476.314 Y275 ; Controlled move to previous position
G1 X0.00 Y-550         ; Reverse move to the starting coordinates

By the way, we have one more financial support candidate a friend of mine, who is wiling to donate 500 too. Therefore, we have total 1000 budget for now. We might rise more who is required to use it like my case. If you may accept, besides my method or code generation support, I can handover you my portion donation. Please feel free to reach me in private talk about it.

@dc42 Thanks for the support. Unfortunately, I am in quarantine. As soon as I finish it I will try again.

@dc42 Hi
Yes, it is 10 mm pitch and revolution 140 mm I have just confirmed steps/mm was correct. During the homing, as soon as the first or second limit switch engaged, the last motor slow down almost 8 times. and homing failed. One or a few pass then homing success.

This is the video about the issue.
Link: Youtube video of Giant Delta Testing and issues.

@sozkan

Work in progress picture of Heat Bed

@dc42 it is actually 10 mm. Because it is 3 meter high that's looks small.

Hello All,
Dyze-Design typhoon hot-end brief info:
I had a very difficult time getting it to work Dyze-Design typhoon hot-end.
The heating block long and high-density plastic extrusion capacity one of the highest in the range. IT can extrude 1 kg per hour, heating up to 480 celsius with no problem. The heating block contains two individual heaters and two sensors to maintain the temperature on the long tube.

The problems we faced in the beginning:
Therefore complication starts.

• The auto-tuning algorithm in the Duet firmware ( as far as I know) was designed only for one hot end at once. However, since both heaters on the same block and influence each other and each successful tuning does not work since they fired at the same time.
• Due to the design and necessity, both heaters have different heating power rates and block heating resistances on the connecting region. For example, heating 1 starts faster, and incrementing above heater 2, and therefore failed.
• Once one of the heaters reaches the threshold, the machine starts printing even the second one is not yet reach the target.
• Ultra-fast heating even after cut-off above 15 celsius and errors.

The solution for now temporarily:
Suggestion by David(@dc42)
Tuning those coupled heaters may work better using the following procedure;

• Set the M570 limits for those heaters very high.

• Find some parameters that allow you to heat both heaters at once to the target temperature.

• With heater #1 at its normal operating temperature, tune heater #2 with the target temperature equal to its normal operating temperature.

• Now set heater #2 to its normal operating temperature and tune heater #1.

• If you continue to get "Temperature rising too slowly" errors, the fix is to reduce the gain or heating rate parameter. That's the M307 R parameter in 3.2RC1 and later.

Therefore I have found the parameters as advised:

• I have set M570 on the S parameter at 240 ( position in the config after the M307 and M950 parameters.

• I have set the M307 parameters;

M307 H1 A550 C180 D2.0 S0.35 V24.3 B0
M307 H2 A550 C239 D2.7 S0.5 V24.3 B0

You may see the different S parameters which are PWM settings.

In conclusion; I realize the present Reprap time and delay-dependent on algorithms are not really efficient, some cases not sufficient too, especially for the industry and advanced systems like the Dyze-Design Typhoon hot-ends.

Because the heating material is not gained temperature linear in time. If you measure the temperature peak after the cut-off, the difference between peak and cut-off should be the main value of concentration. If the peak temperature above the target range, cut-in temperature could be reduced, or if the cut is below the target range reduces the PWM and increase the cut-in temperature just equal to or above the cut-in.
Therefore, by implementing this main opportunity;

• Dynamic PID tuning in a reliable way.
• Ambient temperature changes do not influence the stability of extrusion
• material flow increases and the reduction will not negatively impact the extrusion.
• Advanced heater like the multiple sensors and heating blocks calibration fast and reliable way.
• Different temperatures rated products melting auto-tuning in realtime.

I believe I know the way it should be, If you like, please guide or contribute that we achieve success.
Kind Regards
Serkan

@Phaedrux width of the belt 25 mm.

@jay_s_uk said in Cold extrusion even the one of the pair disabled:

Thanks, I will definitely try this one. However, can I backup the existing firmware?

@Phaedrux said in Giant Delta printer Slow Homing issue.:

Well if you're certain that tooth to tooth distance is 10mm then I guess that's that.

I have confirmed twice also in the video once, step/mm calculation is right according to the 10 mm pitch.
The Actual problem is on the last axis homing.
I will try to setup like a cartesian machine and try homing again.

@Veti said in Giant Delta printer Slow Homing issue.:

as you can see we are all very interested, as we have not seen a belt like that

the white belts tend to have steel cores. they tend to break especially with 180 degree turns.
can you please post a link to the belts used.

First of all thanks for the concern. There is steel fiber, the Smaller the pulley, the lesser the life span. But 14 teeth hopefully not a big problem.
Here is the link information about belt : Belt info: https://www.maedler.de/Article/16470000

Hi,
It finally succeeds, running smooth and correct in calibration, homing perfect, by changing ;

• Connect PUL+ and DIR+ driver input to the +5V pin on one of the servo headers on the breakout board
• Keep Remain PUL- to STEP- on the breakout board, and DIR- to DIR-.
• Revert back the P values to "P0, P1, P2, P3" ( Because Correct one Create noise like ball bearings broken and move uncalibrated ). Therefore I cannot control the default direction (S values) ( But however on the drive I managed to change it ).

In a conclusion, even if it is solved, working better with an incorrect parameter. However, a +5V connections make a good job.

I still want to work with the correct parameters as you advise.

Thank you very much.