I finally got my firmware and everything updated (I think) and I can connect to the board again over the wifi, but I think some of my settings aren't compatible with the new firmware. Whenever I try to home any axis, it tries to move the Z axis first, and when it tries to move I just hear a grinding type noise and it doesn't move at all. I've got some fairly beefy Nema17 motors on the Z axis, and they're each driving two leadscrews, with pulleys to reduce the gearing down. I went this route because my build plate is a 550mm x 550mm sheet of 3/8" aluminum and I was worried about the weight. In retrospect, this is probably major overkill.
I originally thought I was trying to move it too fast, but I have the max z speed set pretty slow, and it's still doing it. I'm going to copy my config.g file here. If anyone with more experience could review it and see where I went wrong, I would greatly appreciate it.
; Configuration file for Duet WiFi (firmware version 1.20 or newer)
; executed by the firmware on start-up
;
; generated by RepRapFirmware Configuration Tool on Mon May 07 2018 21:33:03 GMT-0700 (PDT)
; General preferences
G90 ; Send absolute coordinates...
M83 ; ...but relative extruder moves
M555 P1 ; Set firmware compatibility to look like RepRapFirmare
M667 S1 ; Select CoreXY mode
; Network
M550 PDBOT_XL ; Set machine name
M552 S1 ; Enable network
M587 S"Jason-home" P"3382Rockwood" ; Configure access point. You can delete this line once connected
M586 P0 S1 ; Enable HTTP
M586 P1 S0 ; Disable FTP
M586 P2 S0 ; Disable Telnet
; Drives
M569 P0 S1 ; Drive 0 goes forwards
M569 P1 S1 ; Drive 1 goes forwards
M569 P2 S1 ; Drive 2 goes forwards
M569 P3 S1 ; Drive 3 goes forwards
M569 P4 S1 ; Drive 4 goes backwards
M350 I0 ; Configure microstepping without interpolation
M350 X16 Y16 Z16 E16:16 I1 ; Configure microstepping with interpolation
M92 X100 Y100 Z1500 E418:418 ; Set steps per mm
M566 X800 Y800 Z30 E100:100 ; Set maximum instantaneous speed changes (mm/min)
M203 X10000 Y10000 Z300 E1200:1200 ; Set maximum speeds (mm/min)
M201 X1000 Y1000 Z50 E250:250 ; Set accelerations (mm/s^2)
M906 X1100 Y1100 Z1400 E800:800 I60 ; Set motor currents (mA) and motor idle factor in per cent
M84 S30 ; Set idle timeout
; Axis Limits
M208 X0 Y0 Z-0.8 S1 ; Set axis minima
M208 X500 Y480 Z450 S0 ; Set axis maxima
; Endstops
M574 X1 Y2 S0 ; Set active low endstops
; Z-Probe
M574 Z1 S2 ; Set endstops controlled by probe
M307 H3 A-1 C-1 D-1 ;
M558 P9 X0 Y0 Z1 H5 F100 T2000 ; Set Z probe type to effector and the dive height + speeds
G31 P25 X-45 Y0 Z1.5 ; Set Z probe trigger value, offset and trigger height
M557 X45:450 Y45:450 S100 ; Define mesh grid
; Heaters
M305 P0 T100000 B3950 C0 R4700 ; Set thermistor + ADC parameters for heater 0
M143 H0 S160 ; Set temperature limit for heater 0 to 160C
M307 H1 A373.4 C264.8 D10 B0
M305 P1 T100000 B4725 C7.06e-8 R4700 ; Set thermistor + ADC parameters for heater 1
M143 H1 S300 ; Set temperature limit for heater 1 to 300C
; Fans
M106 P0 S1 I0 F500 H-1 ; Set fan 0 value, PWM signal inversion and frequency. Thermostatic control is turned off
M106 P1 S1 I0 F500 H1 T45 ; Set fan 1 value, PWM signal inversion and frequency. Thermostatic control is turned on
; Tools
M563 P0 D1 H1 ; Define tool 0
G10 P0 X0 Y0 Z0 ; Set tool 0 axis offsets
G10 P0 R0 S0 ; Set initial tool 0 active and standby temperatures to 0C
M501
; Automatic saving after power loss is not enabled
; Custom settings are not configured