I bought a 5xC board to replace the RAMPs that came on my MakerGeeks Mini Kossel kit. I am using the standard delta config file from Github, as described in the Delta FAQ page.
The only change I have made is to reduce the alpha_current setting to 0.4 as the default values was getting it too hot; I did the same for the B & C current settings. I have tried values of 0,6 and 0.8,which warm the motors up after a while, but they are still weak. . I have tried different combinations of the 3 stepper motors (with & without belts) and I get the same result. I am using Windows 10 & the latest version of Pronterface. All the lights are good, with both orange lights on and the middle 2 green ones flickering away. I have checked the pins on the motor and they seem OK, as each motor moves up and down.. just not consistently. Should the motors be getting as hot as they are even when not running ? i.e am I just running too little current?
The A & B motors run at the same time. They are weak and inconsistent, so they start out OK but after moving a few inches the pitch of the motor changes and sometimes it just stops. Sometimes they go in the same direction, sometimes in opposite. I have not got it to home yet as the motors controller does not work properly. In Debug the corodinate values adjust OK, including going negative, but the motor control is very poor, often stopping completely after it has moved a few inches. It was like this out of the box, which is disappointing to be honest. I have read all the Instructions and troubleshooting pages I can, but seem to be stuck now so any help would be useful.