James Cordes

I needed to create a custom shielded extension cable in order to get reliable results from the servo. If I connected the servo directly to the control board, it worked fine. Use the included extension cable: servo would move, then move back!. I used an old FireWire cable that was 100cm long with a ferrite bead and loaded with shielding to create a Dupont extension cable. Works perfectly with no signal interference.

@denis, your advice is incredibly helpful! The firmware was nowhere near correct. I ended up with 0.0, 85 in order to eliminate the Servo hum as any larger angle was placing unnecessary strain on the servo. Thankfully, your advice prevented me from burning up a servo!

I had substantial difficulty managing noise and signal on the included 3-conductor Dupont extension cable in order to get reliable and consistent results from the Servo. It would swing to the new position and then return to the original. I I connected the servo directly to the control board, it worked as expected. I eventually made my a fully shielded cable from an old FireWire cable. This was the only thing that worked. Did others have this issue?

Setting the flat side toward the EN pin resolved the issue. Prints are now perfect!

Thank you. That is not at all what I had dialed-in originally — was getting massive slipping on the Y-axis due to lack of power.

Thank you again for your reply. I was able to troubleshoot the Extruder issue. I determined that the stepper driver on E0 was actually bad. Because you had thoughtfully included a spare stepper driver in the kit, I was able to swap it in and get everything working. I used M82 , G92 E0, T0, G1 F200 E-10… then swapped to T1, and executed the commands again. Both extruders are running! Now I just need to swap in a new shielded cable for the Servo and I’ll be up and running. Thanks again!

I noticed that there is an issue with the length of the Servo extension cable. The servo is not reliably responding to the 1, 2, 3 menu items either. When I connect the servo directly to the control board, all is well; when I connect it via the extension cable, the servo will not reliably switch and never holds its position. This also puts the control board into an error state, which may be affecting the performance of the Extruder motors. I am working to get a shorter (110cm) Dupont cable fo r the servo to test.

Thank you for the reply. I have check those things too. Tried both extruders, both set to 200 degrees. I can manually push filament thru the nozzles. The motors don’t ever attempt to move. I have tested hooking the E0 motor to the Z stepper, the motor functions perfectly, so I know the cables and the motors are good. I have tried measuring voltage to the motors, but it appears that there is no signal to actually turn on the stepper driver(s). It is very odd that both Extruders would be non-responsive. One might think that #define DISABLE_E true was set, but it’s not.

I have the same issue. Neither extruder motor runs. I have checked the stepper drivers, the trimpots, wiring. nothing happens.

My kit came with TMC2208 V2.0 stepper drivers; the trimpots are completely different. They are mounted on the other side of the PCB so not sure which way to turn the trimpot!