Also tempted by the kipper firmware, I am just waiting for the raspberry Pi 4 to go back to more reasonable prices and availability (and also for the refund). I already payed 200€ in shipping taxes so I need to stay reasonable with the extra costs for now...

Thanks for the hint! Just checked datasheet on the extruder, depending on the reference 2 different limits can be set: • "0.5A Peak or 0.35A RMS (LDO-36STH17-1004AHG and LDO-36STH20-0504AHG) • 1A Peak or 0.7A RMS (LDO-36STH20-1004AHG) NOTE: Please pay attention which current type your firmware is configuring and set accordingly: • Marlin and Klipper firmware RMS currents are configured" Source: https://www.filastruder.com/products/ldo-orbiter-v1-5-150g-dual-drive-direct-extruder In my case I have the LDO-36STH20-1004AHG so I can change to 700. I now understand better why I have under-extrusion issues!

Had a lot of issues with retraction but finally could make a benchy! I will try to increase the extruder current, quite sure it will solve the print fails anytime i activate retraction. Now if i put anything more than 0.1mm the extruder struggles every-time after a retraction.

Hi, i could correct the published firmware for inverted axes and now all seems to work fine. Currently doing the first test print, i will update results once finised.

Hello i could download the original firmware and recompile it to correct the inverted axes, so far all working fine! I am now printing a 3D benchy, will post update once finished

Hello all, just to complete some feedback I started to put on the kickstarter comments: last findings while assembling the printer, I am waiting on the final built instruction for the dual extruder but proceed to mount the standard extruder to provide feedback: In my case there are no spare parts (bolts/nuts...) and some are missing, I just ordered some bolts and nuts sets just to be safe once the full set of instructions are released. PRINTER: -stage 06 - step 7- 1 missing M4 x 8mm, used one M4 x 10mm from the enclosure bag. -stage 06- step 11- missing length on where to cut in the instructions, 88mm worked for me. -stage 06- step 14- missing 2 M3 x 20 DUAL EXTRUDER: -stage 04- step 1- M2.5 x 6 are too long, should be x 5mm or x 4mm. I did cut the bolts to remove about 1mm in length. -stage 04- step 4- M3 bolt missing, replaced by extra cap bolt left from the printer.-stage 04- step 06- correction on the instruction, bolts are M4 x 20mm, no M4 x 22mm are supplied or listed in the bags. -step 06- missing part in the kit: no M4 nyloc nut supplied in the bags, also not listed in the bags. -step 07- probe mount is different, no M3 x 6mm remaining, used M3 x 8mm from bag A. -step 11- 2 M3 x 12mm bolts are missing in my set. -step 14- missing indication on the servo extension, connector on other end can only be plugged in one way. Picture on how to align the pins marks with an arrow on the servo and extension connector would help. In my case the connection is correct with the arrow-identified cables (signal) connected to each other.