ANET A8 Configuration?

MKGC

Thank you dc42. I'll give it a shot.

X4TEC

Thank you dc42. I'll give it a shot.

Just in the process of setting aNet A8 with a Duet WiFi. I'm struggle trying to translate the Marlin setting to ReprapFirmware figures for speed / acceleration etc., its the use of mm/s^2 and mm/m that get me confused. I got the below figures off another firmware. I'll let you know once I get them in a sensible format for my Duet. Also I, changed the wiring of my micro switches to follow the advice on the Wiki about having micro switches configured for normally-closed contacts.

#define DEFAULT_MAX_FEEDRATE {300, 300, 2, 25} // (mm/sec)
#define DEFAULT_MAX_ACCELERATION {3000,3000,100,10000} // X, Y, Z, E maximum start speed for accelerated moves.
#define DEFAULT_ACCELERATION 200 // X, Y, Z and E acceleration in mm/s^2 for printing moves
#define DEFAULT_RETRACT_ACCELERATION 3000 // E acceleration in mm/s^2 for retracts
#define DEFAULT_TRAVEL_ACCELERATION 3000 // X, Y, Z acceleration in mm/s^2 for travel (non printing) moves
#define DEFAULT_XYJERK 20.0 // (mm/sec)
#define DEFAULT_ZJERK 0.4 // (mm/sec)
#define DEFAULT_EJERK 5.0 // (mm/sec)

MKGC

Thank you X4TEC

MKGC

I've made some progress thanks to your posts and building a config file as you suggested, DC42, and have got my ANET A8 connected and the end stops are recognized properly including my SN04-N proximity sensor for bed leveling.

All steppers are moving in the correct direction and X and Y axis home properly, but Z axis will not home. When I select "Z axis home" or "all home," the Z axis just moves up about 5cm and stops. It does not lower and stop when the sensor detects the bed.

Any ideas on this Z axis homing issue?

MKGC

BTW,

M119
Endstops - X: not stopped, Y: not stopped, Z: not stopped, Z probe: at min stop

So the controller seems to be able to see the sensor when triggered by the bed or metal object.

dc42

You can use either a traditional endstop for Z homing, or the Z probe. Depending on your choice, you need different code in homez.g and in the Z homing section of homeall.g. See https://duet3d.com/wiki/Configuring_RepRapFirmware_for_a_Cartesian_printer#Homing_files.

3dprinting meathead

@MKGC:

I've made some progress thanks to your posts and building a config file as you suggested, DC42, and have got my ANET A8 connected and the end stops are recognized properly including my SN04-N proximity sensor for bed leveling.

All steppers are moving in the correct direction and X and Y axis home properly, but Z axis will not home. When I select "Z axis home" or "all home," the Z axis just moves up about 5cm and stops. It does not lower and stop when the sensor detects the bed.

Any ideas on this Z axis homing issue?

Sorry to butt into the conversation, but do you have one of those little cube z probes on your printer? I have one and according to mine, it has a 5v output, and the board takes a 3.3v input. I havn't set up my board yet, because I am waiting on a bltouch to come in the mail, but from what I read, you need to put a resistor across the signal to ground terminals to drop the v down to 3.3 if you wanted to use it.
It seems that all the ramps style boards used 5v, but all the 32 bit boards use 3.3v, so z probes aren't exactly plug and play when upgrading to the smarter boards.
If I'm wrong on that, somebody please let me know, because I'm pretty new to 3d printing myself.

3dprinting meathead

@dc42:

I suggest you use the config tool at https://configurator.reprapfirmware.org/ to build the SD card configuration and homing files. Alternatively, as it describes itself as a Prusa i3 printer, the configuration and homing files I provide at https://github.com/dc42/RepRapFirmware/tree/dev/SD-image/sys-Prusai3 should be a good place to start from.

Thanks for this link, just stumbled upon it. I thought I'd have to do all this through G code and was a little intimidated by the process, this really simplifies things for me. My board will be here monday, can't wait to get it set up!

X4TEC

@MKGC:

Thank you X4TEC

Hi MKGC,
How have you got on with your aNET A8? Can you share the config you applied?

npm1

@X4TEC:

@MKGC:

Thank you X4TEC

Hi MKGC,
How have you got on with your aNET A8? Can you share the config you applied?

i also wouldn't mind your config.g files for my ANET since, i am struggling to get the homing working properly.

I have replaced the ZProbe with a standard mechanical switch.

Please share

ludodg

sorry for awakening this topic but in the proces to transfer my A8 to AM8, .. and in the mean while, also replacing my faulty original mainbord for a Duet.
The configuration of this board also gets my beginners-brain terrified.