SR FAQ

1.What motherboard does SR use?

SR uses two different motherboards, SKR V1.3 and Robin Nano V3.0. If your printer is using Robin Nano V3.0,there will be a U disk interface, just like in the photo NO1.

2.What stepper driver block does SR use?

4 TMC2209

3.What is the model of the SR belt? What is the length of one single belt?

The model of the SR belt is: 2GT 10mm. The length of a single belt is 1250mm.

4.What firmware does SR use? Where can I get the source files?

SR uses an open source firmware based on Marlin 2.0.8, you can download the source file from FLSUN's official website.

5.What type of nozzle does SR use?

0.4mm volcano nozzle.

6.What are the models of the three fans on the SR hot end?

Two 4010 turbo fans and one 4010 cooling fan.

7.What is the length of the SR ptfe tube?

565mm.

8.Why does the printer continue to print for about 1 minute when the filament run out?

This is deliberately designed to prevent the filament from getting stuck in the filament detecting sensor, which may damage the filament detecting sensor when auto return the filament.

9.What is the current of the extruder motor? How to modify the current of the extruder motor?

The default extruder current of SR is 0.95A. Use Repetier to connect the printer, enter the command "M906 T0 E (value)", and then enter "M500" to save.For example, enter "M906 T0 E800" to modify the extruder current to 0.8A.

10.What is the default steps of SR's extruder? How to modify the extruder steps？

The default steps of SR extruder is 420. Use Repetier to connect the printer, enter the command "M92 E (value)", and then enter "M500" to save the steps of the extruder, for example enter the command "M92 E370" can modify the steps of the extruder to 370.

11.What is the maximum printing speed of SR?

When the printing speed exceeds 200mm/s, the printing quality will start to deteriorate, so we do not recommend setting the printing speed to exceed 200mm/s.

12.What is the length of the SR parallel arm?

315mm, the distance from the center to the center of the two fish eyeballs.

13.What model of SR heating rod is?

24V 40W.

14.What model is the thermistor ?

NTC 100K.

15.What model is the SR power supply?

24V 15A 360W.

16.What model of SR motherboard cooling fan is?

24V 6010 fan.