Hello Reprapers,
I have a very strange issue. Yesterday I assembled my Prusa i3 and wanted to test if everything works. After uploading firmware and connecting my PC to printer with prontoface software I was able to move only Y axis. X,Z and extruder were idle. No sound no movement - nothing.
I went to IRC and with help of others reprapers i started troubleshooting.
Checked all end stops they worked fine.
I adjusted Vref on stepper drivers so it was all the same as on the Y axis. I know that it might me a bit different on Z axis but X and extruder should work.
I thought I should see if there was an issue with my stepper motors so I swapped X and Y cable and when I was moving Y axis X axis motor was moving. I also tried connecting extruder and it worked on Y axis slot for cables on RAMPS board so I ruled out that my stepper motors were faulty.
Next thing I checked was my stepper drivers. I swapped them around and again the when driver was in Y axis slot on RAMPS board it was working but all other were idle. So I ruled faulty driver option out.
Last thing that I checked was high position and low position voltage on drivers and here is where it gets odd. On all drivers high postition is 5V as expected but on X axis driver it was 4.42v and low was 0 on all of them apart from X axis it stayed the same. I had a spare driver so I swapped it around and it gave me the same result
I checked soldering on ramps board and it all looked good. But the question is where can I get such a voltage drop from and also can it cause my issue?
I am puzzled and do not know what to do. I ordered new RAMPS board but it will take some time until it will get here so I thought I try to fix it myself with community help.
Please help
I have a very strange issue. Yesterday I assembled my Prusa i3 and wanted to test if everything works. After uploading firmware and connecting my PC to printer with prontoface software I was able to move only Y axis. X,Z and extruder were idle. No sound no movement - nothing.
I went to IRC and with help of others reprapers i started troubleshooting.
Checked all end stops they worked fine.
I adjusted Vref on stepper drivers so it was all the same as on the Y axis. I know that it might me a bit different on Z axis but X and extruder should work.
I thought I should see if there was an issue with my stepper motors so I swapped X and Y cable and when I was moving Y axis X axis motor was moving. I also tried connecting extruder and it worked on Y axis slot for cables on RAMPS board so I ruled out that my stepper motors were faulty.
Next thing I checked was my stepper drivers. I swapped them around and again the when driver was in Y axis slot on RAMPS board it was working but all other were idle. So I ruled faulty driver option out.
Last thing that I checked was high position and low position voltage on drivers and here is where it gets odd. On all drivers high postition is 5V as expected but on X axis driver it was 4.42v and low was 0 on all of them apart from X axis it stayed the same. I had a spare driver so I swapped it around and it gave me the same result
I checked soldering on ramps board and it all looked good. But the question is where can I get such a voltage drop from and also can it cause my issue?
I am puzzled and do not know what to do. I ordered new RAMPS board but it will take some time until it will get here so I thought I try to fix it myself with community help.
Please help