Posts made by mjwaters

@chrishamm

Hi Chris, I'm going to be slow to respond with how busy work is for the next two months. But don't worry, I'm committed. My github name is mikejwaters.

How hard would it be to implement a function that interpolates the RGB value from a look up table of colors? In the future, users could upload their own 'custom_colormap.csv' maybe? I'm brainstorming, but I must admit I'm not much of a JS programmer. Mostly Python for me.

Stylistically, I think a diverging colormaps make the most sense since we think of the bed plane as a reference level that we deviate from.

Here's an example that should be great for colorblindness.

I wouldn't complain about this normally, but I greatly appreciate DuetWebControl and this is how I can give back.

The colormaps for height, Terrain and Heat, in the plugin are poor because:

1. They don't have very much contrast and have uneven contrast (low perceptual length, non-uniform perceptual derivative)
2. Are terrible for people with red-green colorblindness, the most common form of colorblindness.
3. A diverging colormap would be better for a variable that deviates around a mean.

More info:
Matplotlib guide to colormaps: https://matplotlib.org/stable/tutorials/colors/colormaps.html
A talk by MPL: https://www.youtube.com/watch?v=xAoljeRJ3lU
A paper: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8309845/

An easy solution would be to ask MPL if we can copy some of their colormaps. Alternatively, I can design some new ones specifically for the plugin.

Cheers,
-Mike

@dc42

Hi again,

My printer is built, and I am debugging now. Do I need to have the extruder motor on the same board as the XY steppers? It seems like I might for them to be considered part of the same 'tool'.

P.S. I am loving my Duet hardware/software so far!

@t3p3tony

That's very cool and sounds like it could have taken a fair amount of time to implement.

Alright, I am going to put in an order with your resellers today.

Thanks for all your help!

@dc42

• Limit switches were always part of the build plan since nobody here likes the startling noise of stepper stall!
• Not a problem.

Do you think the CAN latency will affect the XY accuracy if I use the 3HC expansion? What is the latency? from a print speed, we can estimate a position latency, right?

BTW, the RatRig team also is curious my proposed configuration so I'll be forwarding them the details.

Best,
-Mike

@t3p3tony

That's an excellent point since I am in a WiFi congested area.

Thanks!

@herrminator117

Do you have an "outer wall wipe distance" set? This setting helped me greatly because I don't often have corners to hide seams in. Here is the setting in Cura:

Hello,

I am building a CoreXY printer and would like to use a Duet 3 Expansion 3HC to drive large XY steppers. I'd prefer to use the 3HC expansion with Duet 3 Mini 5+ rather than the Duet 3 6HC because I'd like to have built-in Wifi and I only need two high current drivers.

I am new to Duet hardware. So I am asking: Is there any reason that this configuration wouldn't work? I saw something about CAN bus latency but I don't know how much it might affect my application.

If this is a bad idea, I'll buy the 6HC and a long Ethernet cable.

Thanks,
-Mike