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Linux image to laser g code converter

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Screenshot-8

I did find imagecarve a GPL V2 open source program. After mapping the Z axis to S spindle values it looks like the g code it spits out could work with my laser. I only did test this with the greate grbl simulator, but I would guess after some more tweaking it should work on the real machine too.

Here is my Github project with the source files.

IMG_20140920_121713Looks like the image gets flipped when burned, but I flipped it back for this page. I think cardboard in not the best medium for laser engravings, it burns too fast.

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real time spindle control aka laser mode for grbl

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Screenshot-7$X
G20 G90 G64 G40
T0 M6
G17
G1 F500

G0 X0 Y0 Z0
G1 X20

G0 X0 Y5 Z0
G1 X10
G1 X20

G0 X0 Y10 Z0
M3 S64
G1 X10
S196
G1 X20
M5

G0 X0 Y20 Z0
M3
G1 X10 S255
G1 X20 S127
M5 s0

G0 X0 Y25 Z0
M3
G1 X5 S128
G1 X10 S300
G1 X15 S1000
G1 X20 S255
M5

M30

Here are the changes:
Github Link

Compile time option example:
#if defined(LASER_SPINDLE) && defined(USE_LINE_NUMBERS)
void plan_buffer_line(float *target, float feed_rate, uint8_t invert_feed_rate, float rpm, uint8_t direction, int32_t line_number);
#elif defined(LASER_SPINDLE)
void plan_buffer_line(float *target, float feed_rate, uint8_t invert_feed_rate, float rpm, uint8_t direction);
#elif defined(USE_LINE_NUMBERS)
void plan_buffer_line(float *target, float feed_rate, uint8_t invert_feed_rate, int32_t line_number);
#else
void plan_buffer_line(float *target, float feed_rate, uint8_t invert_feed_rate);
#endif

Electronic, Open source, Stuff

Grbl 0.9g settings for my Shapeoko

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shapeoko

>>> $$
$0=10 (step pulse, usec)
$1=25 (step idle delay, msec)
$2=0 (step port invert mask:00000000)
$3=2 (dir port invert mask:00000010)
$4=0 (step enable invert, bool)
$5=0 (limit pins invert, bool)
$6=0 (probe pin invert, bool)
$10=3 (status report mask:00000011)
$11=0.050 (junction deviation, mm)
$12=0.002 (arc tolerance, mm)
$13=0 (report inches, bool)
$14=1 (auto start, bool)
$20=1 (soft limits, bool)
$21=0 (hard limits, bool)
$22=1 (homing cycle, bool)
$23=1 (homing dir invert mask:00000001)
$24=25.000 (homing feed, mm/min)
$25=250.000 (homing seek, mm/min)
$26=250 (homing debounce, msec)
$27=3.000 (homing pull-off, mm)
$100=87.489 (x, step/mm)
$101=87.489 (y, step/mm)
$102=640.000 (z, step/mm)
$110=4000.000 (x max rate, mm/min)
$111=4000.000 (y max rate, mm/min)
$112=650.000 (z max rate, mm/min)
$120=15.000 (x accel, mm/sec^2)
$121=15.000 (y accel, mm/sec^2)
$122=15.000 (z accel, mm/sec^2)
$130=204.000 (x max travel, mm)
$131=204.000 (y max travel, mm)
$132=54.000 (z max travel, mm)
ok

Open source, Stuff

DD WRT OPENVPN setup for Firmware: DD-WRT v24-sp2 (03/25/13) mega

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This is how I configured OPEN VPN on my DD WRT router:

All the key generation tutorials are still good, but with the new firmware most of the settings are now in GUI:


Internal local IP range: 192.168.0.0/24
VPN IP range 192.168.66.0/24

DNS extra settings:
interface=tun2

settings

push "route 192.168.0.0 255.255.255.0"
push "dhcp-option DNS 192.168.66.1"
push "comp-lzo no"

fire wall rules:

iptables -I INPUT 1 -p udp --dport 1194 -j ACCEPT
iptables -I FORWARD 1 --source 192.168.66.0/24 -j ACCEPT
iptables -I FORWARD -i br0 -o tun2 -j ACCEPT
iptables -I FORWARD -i tun2 -o br0 -j ACCEPT
iptables -t nat -A POSTROUTING -s 192.168.66.0/24 -j MASQUERADE

Client File, like client1.ovpn:

remote xxx.dyndns.org 1194
client
remote-cert-tls server
dev tun0
proto udp
resolv-retry infinite
nobind
persist-key
persist-tun
float

-----BEGIN CERTIFICATE-----
SECRET blablabla
-----END CERTIFICATE-----

-----BEGIN CERTIFICATE-----
SECRET blablabla
-----END CERTIFICATE-----

-----BEGIN PRIVATE KEY-----
SECRET blablabla
-----END PRIVATE KEY-----

 

 

 

 

Stuff

Building Heekscad under Linux Mint 13 X64

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I got this error:

[ 99%] Building CXX object src/CMakeFiles/heekscad.dir/WrappedCurves.cpp.o
make[2]: *** No rule to make target `/usr/lib/i386-linux-gnu/libXmu.so', needed by `bin/heekscad-0.18.0'. Stop.
make[2]: *** Waiting for unfinished jobs....
[100%] Building CXX object src/CMakeFiles/heekscad.dir/wxImageLoader.cpp.o
/home/markus/heekscad_svn/heekscad-svn/src/TreeCanvas.cpp: In member function ‘void CTreeCanvas::OnLabelLeftDown(HeeksObj*, wxMouseEvent&)’:
/home/markus/heekscad_svn/heekscad-svn/src/TreeCanvas.cpp:523:8: warning: variable ‘recent_first’ set but not used [-Wunused-but-set-variable]
/home/markus/heekscad_svn/heekscad-svn/src/ViewPoint.cpp: In member function ‘int CViewPoint::ChooseBestPlane(int) const’:
/home/markus/heekscad_svn/heekscad-svn/src/ViewPoint.cpp:408:9: warning: variable ‘third_best_dp’ set but not used [-Wunused-but-set-variable]
make[1]: *** [src/CMakeFiles/heekscad.dir/all] Error 2
make: *** [all] Error 2

So I did try to fix this like this:
sudo apt-get install ia32-libs
sudo ln /usr/lib/i386-linux-gnu/libXext.so.6 /usr/lib/i386-linux-gnu/libXext.so
sudo ln /usr/lib/i386-linux-gnu/libX11.so.6 /usr/lib/i386-linux-gnu/libX11.so
sudo ln /usr/lib/i386-linux-gnu/libICE.so.6 /usr/lib/i386-linux-gnu/libICE.so
sudo ln /usr/lib/i386-linux-gnu/libSM.so.6 /usr/lib/i386-linux-gnu/libSM.so
sudo ln /usr/lib/i386-linux-gnu/libXmu.so.6 /usr/lib/i386-linux-gnu/libXmu.so

Now it is (SVN) building

~/heekscad_svn/heekscad-svn/heekscnc-svn $ make
Linking CXX shared library ../bin/libheekscnc.so
/usr/bin/ld: skipping incompatible /usr/lib/i386-linux-gnu/libXmu.so when searching for -lXmu
/usr/bin/ld: skipping incompatible /usr/lib/i386-linux-gnu/libSM.so when searching for -lSM
/usr/bin/ld: skipping incompatible /usr/lib/i386-linux-gnu/libICE.so when searching for -lICE
/usr/bin/ld: skipping incompatible /usr/lib/i386-linux-gnu/libX11.so when searching for -lX11
/usr/bin/ld: skipping incompatible /usr/lib/i386-linux-gnu/libXext.so when searching for -lXext
[100%] Built target heekscnc
~/heekscad_svn/heekscad-svn/heekscnc-svn $
~/heekscad_svn/heekscad-svn/heekscnc-svn $ cd ..
~/heekscad_svn/heekscad-svn $ make -j 12
[ 3%] Built target tinyxml
[ 3%] Built target translations
[ 17%] Built target heeksintf
Linking CXX executable ../bin/heekscad
/usr/bin/ld: skipping incompatible /usr/lib/i386-linux-gnu/libSM.so when searching for -lSM
/usr/bin/ld: skipping incompatible /usr/lib/i386-linux-gnu/libICE.so when searching for -lICE
/usr/bin/ld: skipping incompatible /usr/lib/i386-linux-gnu/libX11.so when searching for -lX11
/usr/bin/ld: skipping incompatible /usr/lib/i386-linux-gnu/libXext.so when searching for -lXext
/usr/bin/ld: skipping incompatible /usr/lib/i386-linux-gnu/libXmu.so when searching for -lXmu
/usr/bin/ld: skipping incompatible /usr/lib/i386-linux-gnu/libSM.so when searching for -lSM
/usr/bin/ld: skipping incompatible /usr/lib/i386-linux-gnu/libICE.so when searching for -lICE
/usr/bin/ld: skipping incompatible /usr/lib/i386-linux-gnu/libX11.so when searching for -lX11
/usr/bin/ld: skipping incompatible /usr/lib/i386-linux-gnu/libXext.so when searching for -lXext
[100%] Built target heekscad

After doing
make package
and installing the package:
sudo dpkg -i heekscad_beta-0.18.0_amd64.deb

I can type
heekscad and it looks like it works… well I just found out not all is working…

so I started playing with compiler switches like and was using the git version (but I copied libarea stuff from svn):
-m64
-arch x86_64

and a lot of this
make clean
cmake .
make -j12

and at one point it i was complaining about i386 stuff, so I copied the files over:

sudo cp /usr/lib/x86_64-linux-gnu/libXext.so /usr/lib/i386-linux-gnu/libXext.so
sudo cp /usr/lib/x86_64-linux-gnu/libX11.so /usr/lib/i386-linux-gnu/libX11.so
sudo cp /usr/lib/x86_64-linux-gnu/libICE.so /usr/lib/i386-linux-gnu/libICE.so
sudo cp /usr/lib/x86_64-linux-gnu/libSM.so /usr/lib/i386-linux-gnu/libSM.so
sudo cp /usr/lib/x86_64-linux-gnu/libXmu.so /usr/lib/i386-linux-gnu/libXmu.so

I’m not sure if this is a bug in linux mint, cmake or heekscad?

However it’s working now and producing g-code 🙂

Electronic, Stuff

Selecting a video projector

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One of my coworkers had ask me about my thought regarding video projector, here is what I came up with:

Getting a projector is only half or 1/3 the cost of your home cinema system. Don’t forget the surround sound system, this will cost a lot too. You may be able to save money by projecting against a white wall. I did this in 2001 and it looked very good (I suggest to create a black boarder around the picture, this gives a good contrast!). However a real screen is good to have too, I use a manual screen in my bed room and I have a automatic screen in my living room. If you get a high end programmable remote you can configure it the turn the projector on, put the screen down, turn the DVD on and turn the surround sound system on and set it to DVD – all with the press of just one button (same goes for turning things off). You will need some cable too, check http://www.monoprice.com/ for a cheaper options. Depending on your setup cable can be expensive too.

Good page to get an idea what projectors are available:
http://www.projectorcentral.com/

My first projector 800×600 (4×3) $2500 10 years ago, ;-), + cheap ~$50 / 5.1 surround sound system and manual ceiling mount screen (~$150): http://www.projectorcentral.com/Philips-cSmart.htm
Pro long lamp life, optical zoom
Con no optical lens shift (only digital), 1000 ANSI lumen

My second projector 1280×720 (16×9) $1000, + mid price ~$600 / 7.1 surround sound system and automatic ceiling mount screen (~$600): http://www.projectorcentral.com/Panasonic-PT-AX200U.htm
Pro optical zoom and lens shift, 2000 ANSI lumen
Con short lamp life
I got the AX200U from http://www.visualapex.com/ and I would buy from them again.

Right now I would look for features in this order:
optical zoom (gives freedom of installation on Y axis, the distance from the projector to the screen)
optical lens shift (gives freedom of installation on Z axis and X axis (ceiling mount or on table and corrects if not exactly center))
3D support
low price
long lamp life

Stuff

Japanese speech output with open_jtalk

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This is not as easy as espeak with English… and it looks like Japanes is not as easy as English. However here is what I had done:

download

  • http://packages.debian.org/wheezy/open-jtalk
  • libhtsengine1_1.06-1_amd64.deb
  • open-jtalk-mecab-naist-jdic_1.05-1_all.deb
  • open-jtalk_1.05-1_amd64.deb
  • hts-voice-nitech-jp-atr503-m001_1.04-1_all.deb
  • hts-voice-mei_1.1+dfsg-1_all.deb

 

found the right commands
I found a script to use open_jtalk on this page http://d.hatena.ne.jp/hecomi/20120221/1329838707

Here is my version modified version of the script:
~/bin/jspeak.sh

#/bin/sh
case "$1" in
1) echo "mei_angry"
VOICE=/usr/share/hts-voice/mei_angry
;;
2) echo "mei_bashful"
VOICE=/usr/share/hts-voice/mei_bashful
;;
3) echo "mei_happy"
VOICE=/usr/share/hts-voice/mei_happy
;;
4) echo "mei_normal"
VOICE=/usr/share/hts-voice/mei_normal
;;
5) echo "mei_sad"
VOICE=/usr/share/hts-voice/mei_sad
;;
*) echo "nitech-jp-atr503-m001"
VOICE=/usr/share/hts-voice/nitech-jp-atr503-m001
;;
esac
open_jtalk $2 \
-td $VOICE/tree-dur.inf \
-tf $VOICE/tree-lf0.inf \
-tm $VOICE/tree-mgc.inf \
-md $VOICE/dur.pdf \
-mf $VOICE/lf0.pdf \
-mm $VOICE/mgc.pdf \
-df $VOICE/lf0.win1 \
-df $VOICE/lf0.win2 \
-df $VOICE/lf0.win3 \
-dm $VOICE/mgc.win1 \
-dm $VOICE/mgc.win2 \
-dm $VOICE/mgc.win3 \
-ef $VOICE/tree-gv-lf0.inf \
-em $VOICE/tree-gv-mgc.inf \
-cf $VOICE/gv-lf0.pdf \
-cm $VOICE/gv-mgc.pdf \
-k $VOICE/gv-switch.inf \
-x /var/lib/mecab/dic/open-jtalk/naist-jdic/ \
-s 48000 \
-p 240 \
-a 0.58 \
-u 0.5 \
-jm 0.7 \
-jf 0.5 \
-l \
-z 48000 \
-ow ~/jpout.wav \
-ot ~/jpout.log
play ~/jpout.wav --norm

female voice
$ ~/bin/jpspeak.sh 2 jp.txt
male voice
$ ~/bin/jpspeak.sh 0 jp.txt

I use Geany text editor in Gnome to modify text files (it is very important that the encoding is set the EUC-JP or you get this error: WARNING: text2mecab() in text2mecab.c: Wrong character.) file and I configured a command in Geany to call the script, the only thing I need to do it to type something in Japanese and press F8 for male or F9 for female and it talks.

To install the Japanese keyboard in Ubuntu/Mint you need to go to Administration->Language Support and install Japanese and set input method to IBus (on mint you also need to install ibus). Under System->Keyboard Input Methods you will need to configure the short cut and add Japanese to the list. There are YouTube videos and lots of forum post that explain this in great detail.