Drucker

2023-09-23T07:08:49Z

Kkaempf: Lexmark Hostname hinzugefügt

= Drucker im Fablab:=

# Lexmark CS317dn (neben dem Tresen am Eingang)

= Installation Lexmark CS317dn:=

* Als Netzwerkdrucker einrichten unter dt-cs317.print.fablab.lan (IP 172.22.55.11)
* Treiber unter Windows 10: Lexmark CS310 series XPS v4

Diskussion:Nova 35

2018-04-18T16:11:17Z

Kkaempf: usb: no checksum

== Hardware ==

[[Datei:RDC6442G.jpg|RDC6442G 4-axis Lasercontrol|mini]]
[[Datei:RDC6442G Breakout.jpg|Breakout Board|mini]]

* [http://en.rd-acs.com/prod_view.aspx?TypeId=50097&Id=160&FId=t3:50097:3 RDC6442G Herstellerseite]
* [http://www.rogerclark.net/network-aware-laser-cutter-security/ Network aware laser cutter security]
* [https://stefan.schuermans.info/rdcam/ RDCAM Reverse Engineering]
* [http://www.thunderlaser.co.nz/beifen/technical-support/downloads/category/rdc6442g-and-rdwork-software.html RDworks + Manuals]
* [https://github.com/t-oster/VisiCut/issues/404 VisiCut issue]

== Protokollanalyse ==

# Capture mit Wireshark
# Datei > Paketdissektion exportieren > Als JSON
#* Packet summary line
#** Include column headings
#* Packet details:
#** As displayed
#* Packet Bytes
# some more pat foo

=== rdcam.py ===
<pre>
def send_command(payload):
data=scramble_bytes(payload)
checksum=sum(data)
b1=checksum&0xff
b0=(checksum>>8)&0xff
return bytes([b0,b1])+data

def encode_number(n,l=5):
res=[]
while n>0:
res.append(n&0x7f)
n>>=7
while len(res)<l:
res.append(0)
res.reverse()
return bytes(res)

def decode_number(x):
fak=1
res=0
for b in reversed(x):
res+=fak*b
fak*=0x80
return res

def format_capture(c):
for p in c:
direction=p["_source"]['layers']['udp']['udp.port']=='50200'
data=unscramble_packet(p,checksum=direction)
line='-> ' if direction else '<- '
line+=' '.join([bytes(x).hex() for x in split_messages(data)])
print(line)

def split_messages(d):
m=[]
res=[m]
for x in d:
if x&0x80:
m=[]
res.append(m)
m.append(x)
return res

def unscramble_packet(p,checksum=False):
string=p["_source"]["layers"]["data"]["data.data_raw"]
if checksum:
return list(bytes.fromhex(string[:4]))+unscramble_string(string[4:])
else:
return unscramble_string(string)

def unscramble_string(s):
return [unscramble(b) for b in bytes.fromhex(s)]

def unscramble(b):
res_b=b-1
if res_b<0: res_b+=0x100
res_b^=0x88
fb=res_b&0x80
lb=res_b&1
res_b=res_b-fb-lb
res_b|=lb<<7
res_b|=fb>>7
return res_b

def scramble(b):
fb=b&0x80
lb=b&1
res_b=b-fb-lb
res_b|=lb<<7
res_b|=fb>>7
res_b^=0x88
res_b+=1
if res_b>0xff:res_b-=0x100
return res_b

def scramble_bytes(bs):
return bytes([scramble(b) for b in bs])
def unscramble_bytes(bs):
return bytes([unscramble(b) for b in bs])
</pre>

=== Data format ===

* Byte = 1 Bit Message Start Indicator + 7 Bit Payload
* Only one message (checksum + command) can be sent per UDP package
* Max UDP package size 1472 bytes including checksum; fragmented by simple cutting (even inside a command)

==== Checksum ====

2 Bytes - sum of scrambled message bytes; MSB first.

Checksum has to be send before message.

'''Network only''' USB does not have checksum.

==== Values ====

{| class="wikitable sortable"
|-
! Value !! Lenght !! Description
|-
|id="VAL-ABSCOORD"| ABSCOORD || 5 Bytes || absolute position relative to job origin in µm
|-
|id="VAL-RELCOORD"| RELCOORD || 2 Bytes || relative position in µm; signed (2s complement)
|-
|id="VAL-SPEED"| SPEED || 5 Bytes || speed in µm/s
|-
|id="VAL-POWER"| POWER || 2 Bytes || power in 0,006103516% (100/2^14)
|-
|id="VAL-CSTRING"| CSTRING || variable zero terminated ||
|}

==== Commands ====

{| class="wikitable sortable"
|-
! Byte squence !! Description !! how sure we are
|-
| C6 01 [[#VAL-POWER|<POWER>]] || 1st laser source min power || 99%
|-
| C6 21 [[#VAL-POWER|<POWER>]] || 2nd laser source min power || 99%
|-
| C6 02 [[#VAL-POWER|<POWER>]] || 1st laser source max power || 99%
|-
| C6 22 [[#VAL-POWER|<POWER>]] || 2nd laser source max power || 99%
|-
| C9 02 [[#VAL-SPEED|<SPEED>]] || movement and/or (not sure) cutting speed || 80%
|-
| D9 00 02 [[#VAL-ABSCOORD|<ABSCOORD>]] || move X || 99%
|-
| D9 00 03 [[#VAL-ABSCOORD|<ABSCOORD>]] || move Y || 50%
|-
| D9 00 04 [[#VAL-ABSCOORD|<ABSCOORD>]] || move Z || 50%
|-
| D9 00 05 [[#VAL-ABSCOORD|<ABSCOORD>]] || move U || 50%
|-
| CC || ACK from machine || 99%
|-
| CD || ERR from machine || 99%
|-
| DA 00 XX XX || get XX XX from machine || 99%
|-
| DA 00 04 05 || saved job count || 99%
|-
| DA 01 XX XX <VALUE> || response to DA 00 XX XX || 99%
|-
| A8 [[#VAL-ABSCOORD|<ABSCOORD>]] [[#VAL-ABSCOORD|<ABSCOORD>]] || Straight cut to absolute X Y; turn laser on with configured speed and power || 99%
|-
| A9 [[#VAL-RELCOORD|<RELCOORD>]] [[#VAL-RELCOORD|<RELCOORD>]] || Straight cut to relative X Y; turn laser on with configured speed and power || 99%
|-
| E7 50 [[#VAL-ABSCOORD|<ABSCOORD>]] [[#VAL-ABSCOORD|<ABSCOORD>]] || Bounding box top left? || 30%
|-
| E7 51 [[#VAL-ABSCOORD|<ABSCOORD>]] [[#VAL-ABSCOORD|<ABSCOORD>]] || Bounding box bottom right? || 30%
|-
| E8 02 E7 01 [[#VAL-CSTRING|<CSTRING>]] || Set filename for following transfer (transfer needs to be done really quickly after this!) || 90%
|-
| E8 01 XX XX || Read filename number XX XX ||
|-
| 88 [[#VAL-ABSCOORD|<ABSCOORD>]] [[#VAL-ABSCOORD|<ABSCOORD>]] || straight move to absolute X Y as fast as possible; with laser off || 99%
|-
| 89 [[#VAL-RELCOORD|<RELCOORD>]] [[#VAL-RELCOORD|<RELCOORD>]] || straight move to relative X Y as fast as possible; with laser off || 80%
|}

Nova 35

2017-11-25T13:06:56Z

Kkaempf: rd Decoder Link

{{Infobox Gerät
|Foto = nopicture.png
|Hersteller = Thunderlaser / Allplast
|Typ = Nova 35
|Status = gelb
|KlasseE = gelb
|KlasseK = rot
}}

Gerät ist noch nicht betriebsbereit.

== Mögliche Materialien ==

== Vorbereitung ==

Der Nova35 Laser ist nur nach Einweisung nutzbar! Nicht fürs OpenLab freigegeben!

=== Benötigte Dateien ===

=== Empfohlene Software ===
CorelDraw mit installiertem RDWorks plugin. Bedienung siehe
* https://raw.githubusercontent.com/jnweiger/ruida-laser/master/doc/laser-nova35-rdworks.md

Neuentwicklung eines Treibers siehe
* https://github.com/jnweiger/ruida-laser
* https://wiki.fablab-nuernberg.de/w/Diskussion:Nova_35

rd-Format Decoder
* https://github.com/kkaempf/ruida

== Durchführung ==

=== Notwendige Einstellungen ===

Bedienung nur nach Einweisung (Wir geben Workshops!) und anhand der laser-nova35/HOWTO.txt Checkliste.

Laser-Leistung: Einstellung '''80% ist absolutes Maximum''' Alles darüber zerstört den Laser.

Fokuseinstellung: Mit der neuen Linse (Oktober 2017): 20mm (Früher: 6mm)

==== Schneiden: CUT - ("Rote Linie") ====
{| class="wikitable"
|-
! Material !! Speed !! MinPower1 !! MaxPower1
|-
! !! [ mm/s ] !! [ % ] !! [ % ]
|-
| Acryl 3mm || 25 || 55 || 70
|-
| Birke 3mm || 40 || 50 || 65
|-
| Birke 4mm || 30 || 50 || 65
|-
| Birke 5mm || 20 || 60 || 70
|-
| Finnpappe 1mm || 300 || 26 || 65
|-
| Finnpappe 3mm || 80 || 50 || 70
|-
| PU Weichschaum 1cm|| 100 || 50 || 70
|}
Falls diese Einstellungen nicht ganz durch schneiden: '''Bitte Linse reinigen!'''

==== Markieren: CUT - ("Grüne Linie") ====
{| class="wikitable"
|-
! Material !! Speed !! MinPower1 !! MaxPower1
|-
! !! [ mm/s ] !! [ % ] !! [ % ]
|-
| Birke || 1000 || 8 || 25
|-
| Finnpappe || 1000 || 7 || 18
|}

==== Gravieren: SCAN - ("Schwarze Fläche") ====
{| class="wikitable"
|-
! Material !! Speed !! MinPower1 !! MaxPower1
|-
! !! [ mm/s ] !! [ % ] !! [ % ]
|-
| Birke || 1000 || 8 || 25
|}

=== Action ===

== Nachbereitung ==

Nach dem Lasern ca. 30 Sekunden warten, bis sich der Rauch verzogen hat.

=== Maschine abschalten ===

=== Aufräumen ===

[[Kategorie:Geräte]]
[[Kategorie:Lasercutter]]

FabLab Region Nürnberg - Benutzerbeiträge [de]

Drucker

Diskussion:Nova 35

Nova 35