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  • Upgrading RAMPS 1.4 With TMC2130 Stepper Drivers

    Hi, I have used software SPI with this configuration (MK4Duo firmware 4.3.6) :In file Configuration_Overall.h :#define SOFT_SPI_TMC2130...#define TMC_DEBUG...In file Configuration_Pins.h :...#define X_CS_PIN 59...#define Y_CS_PIN 64...#define Z_CS_PIN 44...#define E0_CS_PIN 63...#define E1_CS_PIN NoPin //use 40 if you have second extruder...#define SOFT_MOSI_PIN 66 #define SOFT_MISO_PIN 65 #define SOFT_SCK_PIN 42 ...

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  • Upgrading RAMPS 1.4 With TMC2130 Stepper Drivers

    MarlinKimbra is Marlin fw rework with many additions from other sources (many but not all additions present on MarlinKimbra only probably will be reinserted in Marlin 2.0) and the config file are a bit different but the principle is the same (and the Software SPI is taken from Marlin sources).It seems to work with my printer (Vellmann K8200 / 3DRag).I have only found out that the clock signal is not costant.Using a Logic Analyzer it is evident that the clock source is a signal which changes period (and so frequency) many times during comunication.All other SPI comunication which I have seen had always a fixed clock.I do not know if it is due to spi software or it will also be present on hw spi and is a normal firmware operation.Nevertheless it seems to work

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