Laser/Hacking: Unterschied zwischen den Versionen
| Zeile 379: | Zeile 379: | ||
0000 0010 0x02 First Laser 1 Max | 0000 0010 0x02 First Laser 1 Max | ||
0111 0010 0x72 First Laser 2 Max | 0111 0010 0x72 First Laser 2 Max | ||
| − | |||
1011 0100 0xb4 Secnd Laser 1 Min | 1011 0100 0xb4 Secnd Laser 1 Min | ||
Version vom 4. April 2021, 22:10 Uhr
For now just a unorganized pastebin to document things that don't fit the mastodon account.
Device resolutions
| Resolution | Width | Height |
|---|---|---|
| Physical | 1300 mm | 900 mm |
| Cut | 13000 positions | 9000 positions |
| Engrave | 51181 points | 35433 points |
Instructions
Cutting
tbd
Engraving
tbd
Rotary Engraving
Get the rotate engrave tool and put it in the lasercutter (in a way where the wide side faces you). Align it to the X axis of the lasercutter. Connect the two cables to the two plugs on the upper right side of the inner workarea (labeled 'rotation'). Flick the Axis Y/Axis U switch on the side of the lasercutter to the 'Axis U' position. Turn the lasercutter on. Test if everything is working by moving the y axis. If the rotate engrave tool moves you're good to go. Move the laser over the object you want to engrave. Be sure that you are exactly in the middle of the object on the y axis. If the laser hits the object, press reset, the laser will move the z axis down. Repeat as many times as needed. In the driver software, enable rotate engrave in the 'Output' Tab. Set circle pulse to 7600 and enter the diameter of the object. Enter the speed an press 'Test'. Ensure that the object does not fall after rotating 360°. Proceed as you would normally when engraving.
Reverse Engineering
Driver (LaserWorks aka RDCAM)
Nope.
Communication Protocol
The protocol can be used in 3 ways.
- USB
- Network
- By saving the job to a file in the driver.
We didn't get the net- to work (haha) so we are using USB right now.
Notation:
< == from the driver > == from the laser
Setup Messages
Before sending the job to the lasercutter the driver sends and receives a few preflight messages. We are unsure if they change when using the Network but they are omitted when saving a job to a file.
Some consistencies can be found when examining these messages. The laser always mirrors messages coming from the driver but changes one of the bytes and appends more data.
For example:
# Message by driver < 0x69 (i) < 0x34 (4) < 0xb8 < 0x4e (N) # Response by Laser > 0x69 (i) <-- mirrored > 0xb4 <-- always changed from 0x34 to 0xb4 (+128) > 0xb8 <-- mirrored > 0x4e (N) <-- mirrored # More Data > 0x36 (6) > 0x2c (,) > 0xb4 > 0x76 (v) > 0x34 (4)
Click 'Search'
< 0x69 (i) < 0x34 (4) < 0xb8 < 0x4e (N) > 0x69 (i) > 0xb4 > 0xb8 > 0x4e (N) > 0x36 (6) > 0x2c (,) > 0xb4 > 0x76 (v) > 0x34 (4) < 0x69 (i) < 0x34 (4) < 0x34 (4) < 0x84 > 0x69 (i) > 0xb4 > 0x34 (4) > 0x84 > 0x34 (4) > 0xb2 > 0xd4 > 0x0a > 0x14
Select COM Device
< 0x69 (i) < 0x34 (4) < 0x34 (4) < 0x24 ($) > 0x69 (i) > 0xb4 > 0x34 (4) > 0x24 ($) > 0x34 (4) > 0x34 (4) > 0xb4 > 0x74 (t) > 0x34 (4)
Sending a Job
# Same as first message in 'Click Search' (x2)
< 0x69 (i)
< 0x34 (4)
< 0xb8
< 0x4e (N)
> 0x69 (i)
> 0xb4
> 0xb8
> 0x4e (N)
> 0x36 (6)
> 0x2c (,)
> 0xb4
> 0x76 (v)
> 0x34 (4)
< 0x69 (i)
< 0x34 (4)
< 0xb8
< 0x4e (N)
> 0x69 (i)
> 0xb4
> 0xb8
> 0x4e (N)
> 0x36 (6)
> 0x2c (,)
> 0xb4
> 0x76 (v)
> 0x34 (4)
< 0x69 (i)
< 0x34 (4)
< 0xba
< 0x22 (")
> 0x69 (i)
> 0xb4
> 0xba
> 0x22 (")
> 0xbe
> 0xa4
> 0x58 (X)
> 0x34 (4)
> 0x34 (4)
# Again, same as first message in 'Click Search'
< 0x69 (i)
< 0x34 (4)
< 0xb8
< 0x4e (N)
> 0x69 (i)
> 0xb4
> 0xb8
> 0x4e (N)
> 0x36 (6)
> 0x2c (,)
> 0xb4
> 0x76 (v)
> 0x34 (4)
# ???
< 0x69 (i)
< 0x34 (4)
< 0x38 (8)
< 0x34 (4)
> 0x69 (i)
> 0xb4
> 0x38 (8)
> 0x34 (4)
> 0x34 (4)
> 0xb2
> 0x4e (N)
> 0x34 (4) <- This byte changes to 0x40 sometimes... (no idea why, seems to happen when one moves one point of the line in the test job for example.)
> 0x34 (4)
# Again, same as first message in 'Click Search'
< 0x69 (i)
< 0x34 (4)
< 0xb8
< 0x4e (N)
> 0x69 (i)
> 0xb4
> 0xb8
> 0x4e (N)
> 0x36 (6)
> 0x2c (,)
> 0xb4
> 0x76 (v)
> 0x34 (4)
After this the actual job data is sent by the driver.
Job Data
The job data seems to be structured as follows:
1. [Unknown Data]
- (as of now always 59 bytes)
2. [Speed Data]
- (as of now always 8 bytes)
3. [Power Data x4]
- (as of now always 5 bytes for each of [Min Power Laser 1, Min Power Laser 2, Max Power Laser 1, Max Power Laser 2] )
4. [Unknown Data]
5. [Speed Data again, but a little different]
6. [Unknown Data]
7. [Power Data again, but a little different x4]
8. [Unknown Data]
1. Unknown Data
59 bytes of ???
2. Speed Data
# Prefix (i think, not a 100% on that) 0xfb 0x38 (8) 0x34 (4) 0x34 (4) 0x34 (4) # Value Bytes x3 0x36 (6) 0xc0 0x14
50 mm/s:
0xb2 (178) () 0x36 (54) (6) 0x64 (100) (d)
100 mm/s:
0x36 (54) (6) 0xc0 (192) () 0x14 (20) (�)
1000 mm/s:
0x90 (144) () 0x38 (56) (8) 0x74 (116) (t)
3. Power Data [x4]
# Prefix 0x75 (u) <- Always the same (message type identifier?) 0x84 <- Laser and Min/Max Byte 0x34 (4) <- Always the same (delimiter?) # Value Bytes x2 0x16 0x02
The Laser and Min/Max Byte is one of:
0x84(Laser 1 MinPower)0xf4(Laser 2 MinPower)0x02(Laser 1 MaxPower)0x72(Laser 2 MaxPower)
0%
0x34 (52) (4) 0x24 (36) ($)
0.5%
0x34 (52) (4) 0xe4 (228) ()
1%
0xb4 (180) () 0x92 (146) ()
5%
0x36 (54) (6) 0x82 (130) ()
50%
0x8e (142) () 0xce (206) ()
100%
0xce (206) () 0xce (206) ()
4. Unknown Data
???
5. Speed Data Again
# Prefix is shorter this time < 0xfb < 0x32 (2) < 0x34 (4) < 0x34 (4) # Value bytes are the same as above < 0x36 (6) < 0xc0 < 0x14
6. Unknown Data
???
7. Power Data Again [x4]
# Prefix 0x75 (u) <- Always the same (message type identifier?) 0xb4 <- Laser and Min/Max Byte [No 0x34 byte this time.] # Value Bytes are the same 0x16 0x02
The Laser and Min/Max Byte is one of (last 4 bits are the same as in the first set of messages):
0xb4(Laser 1 MinPower) (0x84 + 0x30)0x94(Laser 2 MinPower) (0xf4 - 0x60)0x32(Laser 1 MaxPower) (0x02 + 0x30)0x12(Laser 2 MaxPower) (0x72 - 0x60)
Comparison with first Laser Min/Max bytes in binary:
1234 5678 1000 0100 0x84 First Laser 1 Min 1111 0100 0xf4 First Laser 2 Min 0000 0010 0x02 First Laser 1 Max 0111 0010 0x72 First Laser 2 Max 1011 0100 0xb4 Secnd Laser 1 Min 1001 0100 0x94 Secnd Laser 2 Min 0011 0010 0x32 Secnd Laser 1 Max 0001 0010 0x12 Secnd Laser 2 Max bit 6 == is min? bit 7 == is max?
Laserfirmware
Nope.
