For now the variable resistor is set at zero ohms. The intention of is was to find out in the final application if I really need the highest possible corrent
Might be as its temperatue rose to about 60 degrees C for a short time but I see no mechanism at all about what te course might be of that.
Serial.begin(9600) is not the UART boutrate, but the rate my processor communicates wiih my display.
The Bout rate to the UART is 5usec for each bit (plus a few usec for overhead), making about 100kHz
In the codes I sent was no pulse on pin 20 (STEP) either. In a much larger file I had not forgotten to do so. The testtrain of pulses for movement of 200 steps is;
I tried 2000 steps to ten or twenty times.All exept one resulting in nothing more than a little vibration, but one time, may be the eihts test, the motor did its work and rotated about a full revolution.
I feel a little flabbergasted, there a no loose contacts as far as i can test. It must be a programming error somewhere.
On page 13 point 3.4 of the datasheet is written that there are 4 configuration pins, it describes only tree ones. One of them states: When using the UART interface, the configuration pin should be disabled via GCONF.pdn_disable = 1. Nowhere in the whole datsheet however the word GCONF.pdn can be found.