Leetro

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Leetro

The Leetro laser cutter board is a proprietary controller with proprietary software. In the case of Leetro this software is called `LaserCut`. Like most proprietary laser cutting software intended for a specific board it has significant disadvantages and the only open source solutions are attempts at reverse engineering. In this case the reverse engineering is still very minor and scattershot. To the point that there do not seem to be any third party applications that work with the software.

USB Protocol

The usb device is located at vendor 0548 with a PID of 1005

These are sent to endpoint 0x04 and read from 0x88.

Leetro Commands

There are some parsing attempts made through London Hackerspace to decode .mol files, here's a list of the commands and their values:

Command Length Code Parameters
arc_center - 0x4020300 0x2000001 (param1 or param2 failure)
arc_center 4 0x4020300 (p1, p2), p3, p4, (p5, p6)
c_arc_curve 3 0x3000c09 p1, p2, (p3,p4)
c_bzerve_curve 8 0x8000b09 p1, p2, p3, p4, p5, p6, p7, p8
c_change_multi_voltage - 0x3003509 0x2000003 (p1 or p2 failure)
c_change_multi_voltage 3 0x3003509 p1, p2, 0x3003509
c_change_voltage - 0x2003509 0x2000003 (p1 failure)
c_change_voltage 2 0x2003509 p1, 0x2003509
c_curve_begin 1 0x1000109 (p1, p2)
c_curve_end 0 0x209
c_delay_time - 0x2003209 0x2000004 (p1 failure)
c_delay_time 2 0x2003209 p1 * 20, 0x2003209
c_fast_line2 2 0x2020309 p1, p2
c_outport_bit 2 0x2003609 (p1 - 1), 0x2003609
c_outport_byte 2 0x2003709 p1 & 3F, 0x2003709
c_set_laser_mode 2 0x2003409 p1 0x2003409
c_set_lkh_length 1 0x1000e09 p1
c_set_lkh_step 1 0x1000d09 p1
c_set_max_accel 1 0x1004509 (p1, p2)
c_set_move_profile - 0x3000a09 0x2000002 ((p2,p1) or (p4,p3) failure)
c_set_move_profile 3 0x3000a09 (p1,p2), (p3,p4), (p4,p5)
c_set_multi_power - 0x7002009 0x2000002 ((p6,p5), (p8,p7), p1, p2, p3, p4 failure)
c_set_multi_power 7 0x7002009 p1, p2, p3, p4, (p5,p6), (p7,p8), p9
c_set_power - 0x5002009 0x2000003 ((p4,p3), (p6,p5), p1, p2 failure)
c_set_power 5 0x5002009 p1, p2, (p3, p4), (p5,p6), p7
c_set_vector_profile - 0x3000409 0x2000002
c_set_vector_profile 3 0x3000409 (p1, p2), (p3, p4), (p5, p6)
c_write_data 3 0x3003309 p1, p2, 0x3003309
change_multi_voltage - 0x2000120 0x2000003
change_multi_voltage 2 0x2000120 p1, p2
change_power_ontime 1 0x1020109 p1
change_speed_ontime 1 0x1020009 (p1,p2)
change_voltage - 0x1000120 0x2000003 (p1 failure)
change_voltage 1 0x1000120 p1
change_voltage2 - 0x1000b20 0x2000003 (p1 failure)
change_voltage2 1 0x1000b20 p1
check_batch_done - - - (not export command)
check_done - - p1 (not export command)
check_home - - p1 (not export command)
check_limit - - p1 (not export command)
check_SD - - p1 (not export command)
check_status - - p1 (not export command)
check_status32 - - p1 (not export command)
checkin_bit - - (p1 - 1) (not export command)
checkin_byte - - - (not export command)
con_hmove - 0x2010200 0x2000001 (p1 failure)
con_hmove 2 0x2010200 p1, p2
con_hmove2 - 0x3020200 0x2000001 (p1, p3 failure)
con_hmove2 3 0x3020200 (p1, p3), p2, p4
con_line2 - 0x3022000 0x2000001 (p1, p3 failure)
con_line2 3 0x3022000 (p1, p3), p2, p4
con_pmove - 0x2010000 0x2000001 (p1 failure)
con_pmove 2 0x2010000 p1, p2
con_pmove2 - 0x3020000 0x2000001 (p1, p3 failure)
con_pmove2 3 0x3020000 (p1, p3), p2, p4
con_vmove - 0x2010100 0x2000001 (p1 failure)
con_vmove 2 0x2010100 p1, p2
con_vmove2 - 0x3020100 0x2000001 (p1, p3 failure)
con_vmove2 3 0x3020100 (p1, p3), p2, p2 (yes, p2 twice)
con_decel_stop - 0x1010102 0x2000001 (p1 failure)
con_decel_stop 1 0x1010102 p1
con_decel_stop2 - 0x1020102 0x2000001 (p1, p2 failure)
con_decel_stop2 1 0x1020102 (p1,p2)
con_decel_stop3 - 0x1030102 0x2000001 (p1, p2, p3 failure)
con_decel_stop3 1 0x1030102 (p1,p2,p3)
delay_time - 0x1000602 0x2000004 (p1 failure)
delay_time 1 0x1000602 p1 * 20
end_backlash - 0x1004b01 0x2000001 (p1 failure)
end_backlash 1 0x1004b01 (p1,0)
fast_arc_center - 0x4024300 0x2000001 (p1, p2 failure)
fast_arc_center 4 0x4024300 (p1, p2), p3, p4, (p5,p6)
fast_hmove - 0x2014200 0x2000001 (p1 failure)
fast_hmove 2 0x2014200 p1, p2
fast_hmove2 - 0x3024200 0x2000001 (p1, p3 failure)
fast_hmove2 3 0x3024200 (p1, p3), p2, p4
fast_line2 - 0x3026000 0x2000001 (p1, p3 failure)
fast_line2 3 0x3026000 (p1, p3), p2, p4
fast_pmove - 0x2014000 0x2000001 (p1 failure)
fast_pmove 2 0x2014000 p1, p2
fast_pmove2 - 0x3024000 0x2000001 (p1, p3 failure)
fast_pmove2 3 0x3024000 (p1, p3), p2, p4
fast_vmove - 0x2014100 0x2000001 (p1 failure)
fast_vmove 2 0x2014100 p1, p2
fast_vmove2 - 0x3024100 0x2000001 (p1, p3 failure)
fast_vmove2 3 0x3024100 (p1, p3), p2, p4
get_abs_pos - - p1, *p2 (not export command)
get_fmw_ver - - - (not export command)
get_hdw_ver - - - (not export command)
get_lib_ver - - - (not export command)
get_sn - - - (not export command)
get_init_board - - - (not export command)
move_pause 0 0x202
move_resume 0 0x302
outport_bit 1 0x1000105 (p1 -1)
outport_byte 1 0x1000205 p1 & 0x3F
read_data - - p1 (not export command)
reset_pos - 0x2014501 0x2000001 (p1, failure)
reset_pos - 0x2014501 defers to set_abs_pos(p1, 0)
set_abs_pos - 0x2014501 0x2000001 (p1 failure)
set_abs_pos 2 0x2014501 p1, p2
set_axis_ratio - 0x2015001 0x2000001 (p1 failure)
set_axis_ratio 2 0x2015001 p1, (p2, p3)
set_backlash - 0x2004a01 0x2000001 (p1 failure)
set_backlash 2 0x2004a01 p1, p2
set_batch_flag - - - (not exported)
set_conacc_start_speed 1 0x1025101 (p1,p2)
set_conspeed - 0x2010001 0x2000001 (p1 failure)
set_conspeed 2 0x2010001 p1, (p2,p3)
set_home_mode - 0x1014001 0x2000001
set_home_mode 1 0x1014001 (p1,p2)
set_laser_mode 1 0x1000220 p1 [0-4]
set_level_in - 0x1014d01 0x2000001 (p1 failure)
set_level_in 1 0x1014d01 defers to set_level_sprt(p1, (p2)?9:0)
set_level_sprt - 0x1014d01 0x2000001 (p1 failure)
set_level_sprt 1 0x1014d01 (p1, p2 & 0xF)
set_maxspeed - 0x2014301 0x2000001 (p1, (p3,p2) failure)
set_maxspeed 2 0x2014301 p1, (p2, p3)
set_outmode - 0x1014101 0x2000001 (p1 failure)
set_outmode 1 0x1014101 (p1,p2,p3)
set_power_mode
set_profile
set_pwm2_frq
set_pwm_frq
set_scan_startpos
set_scan_step
set_signal_in
set_vector_conspeed
set_vector_profile
start_backlash
sudden_stop
sudden_stop2
sudden_stop3
write_data
write_data_block
write_power_tab
m_fast_line2
m_set_vector_profile2
reset_err
set_s_section
show_err

init_board calls a series of commands to set these to valid and acceptable defaults:

Command Called Static Paramaters Used
set_batch_flag 1
set_maxspeed 0, 0x412e8480
set_out_mode 1, 0
set_home_mode 0
set_con_speed 0 , 0x409f4000
set_profile 0, 0x409f4000, 0, 0x40bf4000, 0, 0x40f38800
set_vector_conspeed 0, 0x409f4000
set_vector_profile 0, 0x409f4000, 0, 0x40bf4000, 0, 0x40f38800
set_laser_mode 0

Reverse engineering resources.

Links

Official

Other Sources