r/SovolSV08

Hello y’all,

I blew up the toolhead board by being dumb.
Where am I able to get a replacement? I don’t want to buy an entire toolhead.

Hi all. I've recently gotten an SV08 to replace an SV06+. Everything is stock/out of the box except I added a BTT HDMI screen. What I've noticed is that after a print completes and the hotend cools down (to 45C because that's what's in the config), the hotend fan turns off. Then, after a period of time (not sure exactly how long), the hotend fan turns back on and continues to run. In Mainsail, the hotend fan shows ~17000 RPM, and 0% (which to me indicates that Klipper isn't commanding it on). Is this normal? Or is something in the config not quite right?

EDIT to add more clarification:
Additional detail: Mainsail shows extruder target 0°C, heater off, current temp around 29°C when the fan is running. It does turn off normally after cooldown, then comes back on later by itself. So it’s not just “fan stays on while hot.”

I've been fighting a temperature reading of 15-16 degrees when it should be 31ish. I thought the board may have been bad because when I try it on a different PA pin, that is used for fans, it works right. New board is doing the exact same thing. i need all my fan pins for my fans.

With that said, what boards do you recommend for Canbus, or I guess I can print a new toolhead that only uses two fans. I guess really I can make a splitter, but I was hoping to keep everything nice neat and clean, so I'm pretty disappointed.

Edit: Solution found. @shiftingtech took me on a field trip. Basically I started back at the beginning and turns out it works as it should as long as your thermistor wire isn't broken. What I've learned. -93 degrees is an open circuit/broken wire. Start there before changing thermistor settings. Also extremely high temperature, like 550 is a short.

Running into problems I’ve never had before. I usually print functional parts out of ABS. My son wants rainbow dragons, so I grabbed some silk PLA. It has been horrible. The extruder just doesn’t seem to grab the filament and when I can get it running I can’t finish a print without a clog. I upgraded to a microswiss 0.6 nozzle and now I don’t even get a clean extrusion, it just kinda blobs out. Any help would be appreciated!

I'm using a stock Sovol SV08 and I'll preheat my bed for 40+ mins, then I run 2 quad gantry levels and follow that up with a bed height calibration. After saving the bed mesh I do a z offset calibration and it pushes the nozzle into the bed and drags it across the build plate gouging a line into the metal build plate when it's laying the purge strip and then I have to quickly adjust the z offset to lift the nozzle or it will damage the middle of the build plate when it starts to print. I assume that the issue has something to do with how high my bed mesh is but I don't know for sure and I don't know what to do about it. Please let me know if I've left out any info and I'll try to provide it.

https://preview.redd.it/2l2rwofx1p9h1.png?width=871&format=png&auto=webp&s=beddc6175c8871d3c0ed84e5678ee802e0d745a3

Hi,

I replaced the heating element to my SV08 nozzle, reinstalled it and now the thermistor reports -51°C at ambient temperature (resistance is around 70kOhm): is it dead or it's just a configuration issue?

EDIT: looks like it's a loose connection of the thermistor to the toolboard or the connector on the toolboard is giving up... I'll try and see if i can somewhat make it so that the contact is stable.

I've got a problem and hopefully someone can help or point me in the right direction. I have replaced my toolhead board on my printer, an SV08 and yes I know it isn't a Voron, but you guys seem to be the experts. I've installed a BTT EBB36 Gen 2 running Canbus. I've got everything setup and printer happy by commenting out everything that was barking. finally when it was happy I proceeded to connect the wires for my toolhead to the EBB36 because I was getting a min. extruder temp... so I crimped and tested the thermistor and got 96k Ohms. Installed the thermistor in the two port TH connection, and heater cables onto the HE screw terminals and booted it up.

Now at this point I get klipper disconnected on the klipperscreen. when checking the log it says rx errors 189. it's always 189. I can talk to the eddy duo which is connected through the EBB36 and it is fine. So the U2C and cable are working.

Where do I go from here? Again, first time with Canbus and it was going great until it wasn't. I honestly don't think it is a Canbus issue, rather maybe the EBB36. It was powered down when I made the connections so I don't see how I could have shorted anything.

Thanks for any help to get my printer back up and running.

I got the hot end set up from sovol that has thread in nozzles, what kind are they so I know what to buy I could buy from sovol but I want them quicker then they would probably ship