Hello everyone,
after a few days of reading forum posts some questions are answered, - but some also don’t, - the reason for this post.
Since some time i’m working at a chassis for an autonomus driving robot for use at agriculture to find weed, pest or ripe fruits (several usecases are possible). Till now the chassis is driven by simple BLDCs wich are driving chains. However, the drive via chains has been too sensitive and energy -intensive, which is why I have to switch to wheel drive. At the same time, I would like to go to a direct drive without gearbox.
Because i need very low speed, the chassis should only move one or two meters per minute, i thought about using stepper motors for the drive. But because steps are not very economical, i searched for drivers in which the phase current is adaptable during operation.
I didn’t found, but the hint to SimpleFOC…
At Aliexpress i found some Driverboards, offered from Makerbase: MKS SERVO42C PCBA,
There is also a board for the Nema 23 size motors, - i think you know this boards…
What do you think about this boards?
Is it possible with it to get a Stepper motor to lower power consumption at low load but max. torque (with max power consumption of course 
) if needet?
Long storry, sorry for that, but i’m in mind you need to know.