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unknown authored and unknown committed May 21, 2022
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Expand Up @@ -6,13 +6,15 @@ Extruder motors/pancake steppers are a bit different, as there is more variance

- **Check with the community first.**
- If you are using BoM motors, check the stock configs.

- Check in Discord to see what others are running.

- **You should start off with a more conservative** `run_current`.
- You may be able to attain additional motor performance by increasing currents, but come back to that later. **Get your printer working reliably first.**

- **Some motors vary.**
- I have found my LDO 0.9 degree steppers to be able to achieve notably higher max accels/speeds with higher currents.

- My OMC 1.8 degree motors, on the other hand, performed very well even at moderate currents.

- We are derating the motors/drivers for margin of safety. Rated currents are the absolute maximum *in ideal conditions*. In reality, things like chamber and driver temperature come into play. Margin of safety is also standard practice.
Expand All @@ -21,7 +23,11 @@ Extruder motors/pancake steppers are a bit different, as there is more variance
## Determining Initial `run_current`:
Start with around **40-50%** of rated current.

For example, with a 2a motor, start around 0.8-1a.
- For example, with a 2a motor, start around 0.8-1a.

Then you can [test your maximum speeds/accels](/articles/determining_max_speeds_accels.md) and make sure your motors are performing well. In most cases, the motors can handle speeds/accels much faster than what you would realistically be printing at.
- If you are having issues reaching reasonable speeds/accels, you may have a mechanical problem. See [here](/articles/troubleshooting/layer_shifting.md).

## Determining Maximum `run_current`:

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