I currently have a v1.04 Duet Wifi and want to upgrade my temperature sensing setup for my hotend, looking for better accuracy. I initially considered using a pt100 but then got very interested in the pt1000 due to the similar max temp range and ease of setup (just plug and play into my smart effector). As I kept reading into it, however, I saw that the 4.7k series resistor may not be the best for that. After reading another forum post discussing a similar issue, @dc42 recommended using a 2.2k .1% series resistor as opposed to a 1k as recommended by triangle labs for better high temp resolution. From what I understand (which I admit is fairly limited) this is because you get the best resolution when the measured resistance of the probe is the same as the series resistance. Is that true? If so, if I just want to print pla, why not use a 1.8k series resistor as that is the resistance of the pt1000 at 200c (The table of pt1000 resistances at different temps can be found here, FYI this is, as far as I know, only for the sensor found here)? I get that most people won't buy a pt1000 just to print pla, but I'm more wondering about if I'm right about what the value of the series resistor means in terms of resolution. Thanks!

After further investigations it seems like the vibration from the fan is actually what's causing the false triggering, not the emf. Anybody know of a good way to dampen vibrations for a 30mm fan?

I recently bought a Sunon HA30101V3 30mm fan to replace the larger Noctua NF-A4x10 fan I was using before for weight savings. However, the first time I plugged it in I noticed that the green LED on the smart effector board was on continuously (the probe readout on my paneldue was also 1000 continuously). I lowered the sensitivity to no avail, and then I turned off the machine, unplugged the fan, and turned it back on, and everything went back to normal. Has anybody run into this issue before? I'm pretty sure it's the emf of the fan that is causing this; I tried twisting the wires of the fan together but that didn't work. Any help or tips would be appreciated.

For reference, I figured out what the 6 flashes means by reading through the source code. Similarly to the 7 flashes, it means the voltage readout is out of tolerance, just out of tolerance on the other side. Most likely means I broke my second board too. Guess it's a good thing I just bought another one

@Phaedrux here are some that were helpful for me: https://forum.duet3d.com/topic/5391/smart-effector-not-working
https://forum.duet3d.com/topic/9038/smart-effector-z-probe-no-longer-working/15
The second one was especially helpful in determining that my first board was broken.

Do you have any idea what the 6 flashes mean? Or do you have a better way to contact @dc42 to find out? He seems like the most knowledgeable about the smart effector.

Thanks for any help.

Yes, but that document covers only assembly and configuration, not detailed troubleshooting. That info is currently scattered over multiple different forums, and it would be great if it was in one place, maybe even as an addendum to that page.

Anybody know what 6 flashes of the green LED on startup means? Also, is there a comprehensive troubleshooting documentation available for the smart effector somewhere? It would be great if I could reference some sort of document for this sort of stuff as opposed to having to ask every time. Thanks in advance for the help.

@dc42 any idea what the 6 flashes means? If I need to buy another smart effector it would be great if I could do that today

@dc42 That's very unfortunate. I do have a spare one, but when I plug that in it does the same thing but flashes 6 times. What does that mean?

I just plugged in my smart effector for the first time today, and instead of seeing the green led flash twice it flashes 7 times, pauses, and then repeats. Does anybody know what that means? All of the other hotend components work including the print illumination leds, so I'm pretty sure it's a probe wiring issue but I've checked all of the connectors and leads and haven't found any issues. Any help would be appreciated.