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[starlights]

Hello all.
I bought a mega with a ramps 1.4 board.
Now the question is, which driver should I use.
x, y, z, e0, e1?

and can I use the bootloaders mega ramps?

with kind regards johan

[TCWORLD]

Hi,

The Ramps bootloader should be ok.

In terms of pinout, I've updated the pinout header in the code to indicate which pins are used. But for the 1.4 board it is:

• X-Axis - Controls Right Ascention
• Y-Axis - Controls Declination
• Aux-3 - Provides ST-4 pins
  • Pin 3 - RA+ - connect to ST-4 pin 6
  • Pin 4 - DC+ - connect to ST-4 pin 5
  • Pin 5 - DC+ - connect to ST-4 pin 4
  • Pin 6 - RA- - connect to ST-4 pin 3
  • Pin 7 - GND - connect to ST-4 pin 2
  • Pin 2 - Speed - connect to ST-4 pin 1
• Aux-4 - Provides GPIO
  • Pin 11 - Snap Pin - output for general use
  • Pin 7 - Speed Resistor - MUST CONNECT 1k resistor to Aux-3 pin 2.
• Left servo header is used for status LED, connect an LED via resistor from signal pin to ground.
• Z- axis limit - provides emergency stop feature. A simple push button to ground will stop the AstroEQ motors.

Kind Regards,
Tom

[Sumukh P]

Dear Tom,
Is there any emergency stop button for Mega2560 based button? If not, is it possible to add?

[TCWORLD]

@Sumukh There is, Digital pin 24. A button or switch between the pin and ground will stop the motors immediately. This was a recent addition that hasn't yet made the schematic/documentation.

[Sumukh P]

Thank you. Is there a need of pull up otherwise or it is controlled through code? Also, is it incorporated in latest firmware?

[starlights]

hi thanx.
i revistit a tghe ramp and mega, but the motor don't work