Geeetech

Hi friend
reading the resistance is R200 this means it is 0.2 and 70% is for full sptep but should remove the jumpers in this case we handle 1/16 step or the voltage for the drivers should be 1.6v according to the table conversion.

the table says
full step without jumpers multiply by 70%
1/16 step ...

driver voltage

hello friends I would like to know what are the voltages of the a20m drivers with board Gt2560 V3.0 the drivers are allegro A4988 with resistance R200 since and to turn them in ​​days past and were unconfigured reading on the internet I found a formula

Vref = Imax (8 x Rf)
Vref ...

hello guys a question I can replace the engine 42shd0227 for a 42shd0503 what would be the recommendation and how should I do it since the 42shd0227 does not work and the driver is good to part the engine has a noise when I try to print or can you help me.https://www.youtube.com/watch?v=DG_okZV30gE

My friend thanks for your answer but problem is solved change the fuses it's oks

hello I come to you because yesterday my printer arrived a20m bought by gearbest. make the assembly and tighten all the screws and pass from 220v to 115v because in my country 115v is used. when I turned on the printer reach to calibrate the bed when I put filament and told him to heat bed and ...