DIY project: homemade electronics?

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Niben
i do not use the standard motor drivers, but i use different IC motor drivers, the L293E to be precise. So what do i have to do?

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george4657
Take a look at the pins.h file

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JustAnotherOne
Marlin works with stepper controller chips that have a Step and Dir signal. It creates a pulse on the step signal and expects the driver IC to have the stepper move by one step. If your driver chips does not comply to this, then you will have to change that part of Marlins code.

If you are new to embedded software then that will be a hard task. You might want to reconsider your choice of driver chip,..

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Niben

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JustAnotherOne
Marlin works with stepper controller chips that have a Step and Dir signal. It creates a pulse on the step signal and expects the driver IC to have the stepper move by one step. If your driver chips does not comply to this, then you will have to change that part of Marlins code.

If you are new to embedded software then that will be a hard task. You might want to reconsider your choice of driver chip,..

Hm, that doesn't sound nice. I think I might be able to rebuild my board a little bit so that it does what you said it does with direction, enable and step. You have some link where this is explained a little more?

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Niben
Kind regards, and I'm sorry about my probably stupid questions, but I try to understand al these crazy new things!

// for example pins for stepper motors, step/dir/enable pins, the -1 on enable means it does not use enable, although you should use that; similar for each axis including Extruder
#define X_STEP_PIN 2 //change the number with your number
#define X_DIR_PIN 3
#define X_ENABLE_PIN -1
//the endstop for each axis (except E), depends on what endstop are used, their configuration is in config.h instead of pins.h, you will have to figure that part out, things like configuration of pullups, and positive/negative logic
#define X_STOP_PIN 16
...
//the fan and heaters are pins which basically go to mosfets to control such fans and heaters
#define HEATER_0_PIN 13
#define HEATER_1_PIN -1
#define HEATER_2_PIN -1
#define FAN_PIN -1
#define HEATER_BED_PIN 4
...
//temp pins are the connections that lead to thermistors, usually these pins have a pullup of 4.7k and a 10uF cap to gnd, thats the termistor sensor:
#define TEMP_0_PIN 6 // MUST USE ANALOG INPUT NUMBERING NOT DIGITAL OUTPUT NUMBERING!!!!!!!!!
#define TEMP_1_PIN -1 // MUST USE ANALOG INPUT NUMBERING NOT DIGITAL OUTPUT NUMBERING!!!!!!!!!
#define TEMP_2_PIN -1 
#define TEMP_BED_PIN 10
...
//other pins like these are extra for special functions and probably you wont care so for start you can disable their function with like -1
#define SDPOWER -1
#define SDSS 53
#define LED_PIN -1
#define PS_ON_PIN 9
#define KILL_PIN -1
//other pins like those for sd card need special reading and have to be specific pins, e.g. cant just connect the hardware to any place, but if you do the hardware you will know where to put them

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Error message
Arduino: 1.6.3 (Windows 8.1), Board:"Arduino Uno"

In file included from Marlin_main.cpp:30:0:

Marlin_main.cpp: In function 'void gcode_M119()':

fastio.h:25:27: error: 'DIO67_RPORT' was not declared in this scope

#define _READ(IO) ((bool)(DIO ## IO ## _RPORT & MASK(DIO ## IO ## _PIN)))

^

Marlin.h:72:49: note: in definition of macro 'SERIAL_PROTOCOLLN'

#define SERIAL_PROTOCOLLN(x) do{ MYSERIAL.print(x),MYSERIAL.write('\n'); }while(0)

^

fastio.h:65:19: note: in expansion of macro '_READ'

#define READ(IO) _READ(IO)

^

Marlin_main.cpp:3502:25: note: in expansion of macro 'READ'

SERIAL_PROTOCOLLN(((READ(Y_MIN_PIN)^Y_MIN_ENDSTOP_INVERTING)?MSG_ENDSTOP_HIT:MSG_ENDSTOP_OPEN));

^

fastio.h:25:54: error: 'DIO67_PIN' was not declared in this scope

#define _READ(IO) ((bool)(DIO ## IO ## _RPORT & MASK(DIO ## IO ## _PIN)))

^

Marlin.h:72:49: note: in definition of macro 'SERIAL_PROTOCOLLN'

#define SERIAL_PROTOCOLLN(x) do{ MYSERIAL.print(x),MYSERIAL.write('\n'); }while(0)

^

fastio.h:25:49: note: in expansion of macro 'MASK'

#define _READ(IO) ((bool)(DIO ## IO ## _RPORT & MASK(DIO ## IO ## _PIN)))

^

fastio.h:65:19: note: in expansion of macro '_READ'

#define READ(IO) _READ(IO)

^

Marlin_main.cpp:3502:25: note: in expansion of macro 'READ'

SERIAL_PROTOCOLLN(((READ(Y_MIN_PIN)^Y_MIN_ENDSTOP_INVERTING)?MSG_ENDSTOP_HIT:MSG_ENDSTOP_OPEN));

^

fastio.h:25:27: error: 'DIO59_RPORT' was not declared in this scope

#define _READ(IO) ((bool)(DIO ## IO ## _RPORT & MASK(DIO ## IO ## _PIN)))

^

Marlin.h:72:49: note: in definition of macro 'SERIAL_PROTOCOLLN'

#define SERIAL_PROTOCOLLN(x) do{ MYSERIAL.print(x),MYSERIAL.write('\n'); }while(0)

^

fastio.h:65:19: note: in expansion of macro '_READ'

#define READ(IO) _READ(IO)

^

Marlin_main.cpp:3510:25: note: in expansion of macro 'READ'

SERIAL_PROTOCOLLN(((READ(Z_MIN_PIN)^Z_MIN_ENDSTOP_INVERTING)?MSG_ENDSTOP_HIT:MSG_ENDSTOP_OPEN));

^

fastio.h:25:54: error: 'DIO59_PIN' was not declared in this scope

#define _READ(IO) ((bool)(DIO ## IO ## _RPORT & MASK(DIO ## IO ## _PIN)))

^

Marlin.h:72:49: note: in definition of macro 'SERIAL_PROTOCOLLN'

#define SERIAL_PROTOCOLLN(x) do{ MYSERIAL.print(x),MYSERIAL.write('\n'); }while(0)

^

fastio.h:25:49: note: in expansion of macro 'MASK'

#define _READ(IO) ((bool)(DIO ## IO ## _RPORT & MASK(DIO ## IO ## _PIN)))

^

fastio.h:65:19: note: in expansion of macro '_READ'

#define READ(IO) _READ(IO)

^

Marlin_main.cpp:3510:25: note: in expansion of macro 'READ'

SERIAL_PROTOCOLLN(((READ(Z_MIN_PIN)^Z_MIN_ENDSTOP_INVERTING)?MSG_ENDSTOP_HIT:MSG_ENDSTOP_OPEN));

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Ecellent text, and really needed. What could be added is that power supplies should be unregulated with a filter/reservoir capacitor with a value of: