Happy Hare can do WHAT???

Today, we're going to delve into the automatic toolhead calibration capabilities recently added to Happy Hare.
github.com/mog...
github.com/Enr...

[@chatteriekristal]

Good morning The mmu_calibrate_toulheard clean=1 function does not work for me, indicates an error that the sensors filament is empty which is logical, so I do not want to perform the command However I have the filament detection sensors above the print head which are in PG11, already done some research and for the moment not found the solution I would still like to thank you for these very useful and very well done videos which helped a lot in the progress of the creation of the ercf v2, thank you

[@SilverbackDesign-yd4dd]

My suggestion would be to head over to the Voron discord and look for "ERCF questions" and chat with the fine people in there.

[@m00seeee]

Does this require the toolhead sensors setup? Or can it be completed with the encoder only?

[@SilverbackDesign-yd4dd]

I will consort with Moggie and get back to you asap on this. I honestly don't know the answer to that at this point.

[@m00seeee]

@@SilverbackDesign-yd4dd thank you 😊

[@marcusp2905]

I am interested in this too😊​@@SilverbackDesign-yd4dd

[@paulmorgan8106]

Yes the automation requires a toolhead sensor - it is the only way to get accuracy we need (about 0.2mm btw). Otherwise it remains a manual trial and error tuning exercise. The hope is that we will see accurate published results from those with sensors for use by those without.

[@m00seeee]

@@paulmorgan8106 Thanks for your response. I assume I would need both entry to extruder and extruder to nozzle sensors?

[@pitpao]

maybe this would be a good place to ask about toolhead sensors... I was having some trouble with getting them both to work with a sb2209 rp2040... If i use one of the pins of the probe port that sensor will only trigger for a short time and then revert states. Anyone know how to fix that?

[@SilverbackDesign-yd4dd]

I'm not familiar with the 2209. You might head over to the Voron discord and ask in ERCF Questions or the Can tool board channel.

[@pitpao]

@@SilverbackDesign-yd4dd okay. Can I ask what stealthburner model or more specifically the latch mechanism is on your printer? Is there a filament cutter in it?

[@SilverbackDesign-yd4dd]

I have a Xol and Rapido2 UHF on both of my machines right now. They use the EBB36 can board. I also use sensorless homing so I can have both toolhead switches working. I don't currently use a toolhead cutter and use the EREC cutter since the Xol cutter options don't fit my use case. I did, for some time, use the G2E-Filametrix, which I smashed together from the G2E and the Filametrix. (Hence the name 🤣) It was a great combo and worked exceptionally.

[@crazyfrigginmonkey]

Little late, but if you're using gpio21 on the probe port. You'll need a resistor soldered on or need to use another port. You can't do a software pullup on that pin. In my setup I was using tap on the other pin in the probe port and hoped to use it, but instead used gpio6 in the ind/fan port nearby. If you go that route you'll need a jumper in the ind orientation and a jumper on npm.

[@MrReichard]

is this with v2.5.2-37-g147f52a4??? awesome!

[@SilverbackDesign-yd4dd]

I am on a pre-release version since the video recording started before the early release. The current early release is 2.6.0. To get this version you need to run: cd ~/Happy-Hare ~./install.sh -b 260