Upgrading your Airwolf HDx /HD2x hotend to E3D v6 + Volcano (Page 2 of 3)

I would suggest using the cartridge designed for that style block. I don't think you'll get a reliable reading with the bare style.

They're only $15, and it could save you quite a bit of headache down the road. https://www.filastruder.com/products/e3 … 1171575940

I'm almost all wired up.  The lack of good technical data sheets has slowed progress.  All of my logical guesses turned out to be right, but I don't like to guess, so I had to do a lot more circuit analysis than I would with things I design myself.  One thing I need to know before I fully hook up, is the voltage requirements for the fan.  Since I don't have technical data sheets for the fans that came with the Eruption kit, I don't know for certain that they will tolerate 13.5 V.  It sounds like they will, but I don't like to guess.  Replacing them would be a pain.

Any idea what they’re wattage is?  Am I going to draw too much power if I double tap them?

My Airwolf runs at 13.5 volts also - I wonder if that's their way of squeezing a little more power out of the heater.

Googled that error message, first link:

http://forums.reprap.org/read.php?146,691608

That’s one solution I’ve seen.  It’s apparently from an older Marlin version.  The other solution I’ve seen is to find and replace all fpos_t with fatpos_t.  It’s because the stdio.h package in the newer studio version already declares that variable. (It’s literally all written there in the error message, but I don’t trust my coding skills to go ahead and modify stuff like that.)

Installing a different Arduino version concerns me because I have no idea what else that will muck up.  I’ll do that if this doesn’t work.

If it were the newer version of Arduino I needed, I’d do it in a heartbeat, but it’s actually the newer version that has the variable fpos_t defined in stdio.h.  The problem is the old Marlin version.  If I install the older version of Arduino, I don’t have a guarantee that other projects that may rely on the newer Arduino will not be affected.  They probably won’t, but updating Marlin makes more sense.

I didn't update to a newer version of Marlin.  I simply renamed the variable to remove the conflict.  It shouldn't functionally change anything, and it did compile. That said, it clearly did not work.  So obviously I need to try something else.  I'll downgrade my Arduino version to see what happens. 

I don't think this is a wiring issue, because I can reinstall the firmware hexfile that came with the printer using Cura.  I wonder though, if that is the way I should install this.  Should I export the binary file and install with Cura?  I noticed that when I do that, I get two hex files, one with the bootloader and one without.  Since messing with the bootloader is above my pay grade, I need to get some advice on which file I should try.

Just to check, I installed, without modification, the firmware I downloaded from this page.  It behaves precisely as the edited versions I made from it.  The upload appears to go accordingly.  No display on VIKI 2.  No control with the computer.  Upload old hex file with Cura, everything is back in place, but not useful with my new hardware.

Either the firmware on here is faulty, or I am installing it incorrectly.  I am able to get it back to the original firmware by installing the hex file provided on the thumb drive with the computer using Cura.  My thumb drive does not appear to have an editable copy of the firmware, unless it is hidden somewhere where I can't find it.

Alright, it's probably just a case of unexplained Gremlins, but I upgraded Arduino IDE all the way to 1.8.5, did Find/Replace on "fpos_t", and compiled it.  After uploading, it works.

That is a relief.  I did not know what my next step would be.

Now I will edit this firmware for my new hardware, and see where this goes.

I'm stuck.

As I see it now, it’s probably a configuration difference of some kind between models.  I’m sick of not having a 3D printer, so in the short term, I should be able to replace the thermocouples with the Honeywell thermistors listed in the firmware I downloaded.  Hopefully the calibration isn’t too different.  The distance between extruders can be calibrated in Simplify 3D.

Long term, I will not be happy with this.  I’ll have to try and configure Marlin from scratch.  Assuming Airwolf didn’t modify the board itself, this should be doable.