possible to controll ISEL EP1090 with EMC2
15 Mar 2011 12:41 #7850
by andypugh
Replied by andypugh on topic Re:possible to controll ISEL EP1090 with EMC2
It probably uses HPGL. It is somewhat tricky to go from EMC2 to HPGL.
In theory you could create a HAL component that takes the X and Y position commands and inputs and puts them together into a HPGL command to send to the serial port.
Sounds like fun
I have used a HPGL printer for 3-D printing, in my case I used some GNU Octave ( www.gnu.org/software/octave/ ) code to slice up the STL files into outlines, to be cut out of sticky paper with a vinyl cutter: I have attached the code below in case it is useful. It ran on my Mac, using a USB to serial convertor.
In theory you could create a HAL component that takes the X and Y position commands and inputs and puts them together into a HPGL command to send to the serial port.
Sounds like fun
I have used a HPGL printer for 3-D printing, in my case I used some GNU Octave ( www.gnu.org/software/octave/ ) code to slice up the STL files into outlines, to be cut out of sticky paper with a vinyl cutter: I have attached the code below in case it is useful. It ran on my Mac, using a USB to serial convertor.
filename = '/Users/andy2/Documents/work/Front Right v10t.stl'
z = input('Start position (-Inf for beginning)')
iter = 3;
% set up plotter
a = system ('stty -f /dev/cu.usbserial0 evenp cstopb 9600 ...
-crtscts -mdmbuf clocal cread')
f = 0; p = 0; pagenumber = 1;
eps_scale = 72/25.4 % conversion from mm to points
plot_scale = 40 % conversion from mm to RD-GL
thickness = 0.59/7 % thickness of layers
pagewidth = 260; % paper size
pageheight = 190;
[F V C] = stl_read(filename);
X = [V(F(:,1),1) V(F(:,2),1) V(F(:,3),1)]; % X coords for each face
Y = [V(F(:,1),2) V(F(:,2),2) V(F(:,3),2)]; %Y
Z = [V(F(:,1),3) V(F(:,2),3) V(F(:,3),3)]; %Z
T = Z; %quick and dirty rotation
Z = X;
X = T;
clear T
% find extents
zmin= min(Z(:))
zmax = max(Z(:))
page_x = pagewidth; page_y = pageheight+10; % force file initialisation
old_ymin = 0;
%for z = zmin:thickness:zmax
for z = max(z, zmin):thickness:zmax
disp(z)
I1 = find(sum((Z>z),2) == 1); % Index of faces with 1 vertex greater than z
I2 = find(sum((Z>z),2) == 2); % index of faces with 2 > z
C = [];
for a = 1:length(I1)
[zs i] = sort(Z(I1(a),:)) ;% put biggest Z last, and store order
xs = X(I1(a),i);
ys = Y(I1(a),i);
x1 = xs(1)+(xs(3)-xs(1))*(z-zs(1))/(zs(3)-zs(1));
x2 = xs(2)+(xs(3)-xs(2))*(z-zs(2))/(zs(3)-zs(2));
y1 = ys(1)+(ys(3)-ys(1))*(z-zs(1))/(zs(3)-zs(1));
y2 = ys(2)+(ys(3)-ys(2))*(z-zs(2))/(zs(3)-zs(2));
C = [C; x1 y1 x2 y2];
end
for a = 1:length(I2)
[zs i] = sort(Z(I2(a),:)) ;% put biggest Z last, and store order
xs = X(I2(a),i);
ys = Y(I2(a),i);
x1 = xs(2)+(xs(1)-xs(2))*(z-zs(2))/(zs(1)-zs(2));
x2 = xs(3)+(xs(1)-xs(3))*(z-zs(3))/(zs(1)-zs(3));
y1 = ys(2)+(ys(1)-ys(2))*(z-zs(2))/(zs(1)-zs(2));
y2 = ys(3)+(ys(1)-ys(3))*(z-zs(3))/(zs(1)-zs(3));
C = [C; x1 y1 x2 y2];
end
xmax = max(max(C(:,[1 3])));
xmin = min(min(C(:,[1 3])));
ymax = max(max(C(:,[2 4])));
ymin = min(min(C(:,[2 4])));
pstr = '';
if (xmax-xmin > pagewidth | ymax-ymin > pageheight)
clc();
disp("Page not large enough for object")
stop
endif
if (page_x + xmax - xmin) > pagewidth % not enough room on page
page_x = 0;
page_y = page_y + old_ymin;
old_ymin = 0;
endif
if (page_y + ymax - ymin > pageheight) % top of page reached
if (f ~= 0) % file already open
fprintf(f, 'stroke\n');
fprintf(f, '%%%%EOF\n');
fclose(f);
% fprintf(p, "SP 0;");
clc();
disp("change paper and press any key")
fflush(stdout);
k = kbhit();
% fprintf(p, "SP 1;")
endif
if (p ~= 0) % have a plotfile
fclose(p)
endif
page_y = 0 ; page_x = 0;
stroke = '';
f = fopen(['/Users/andy2/Documents/gash' num2str(z) '.eps'], 'wt');
fprintf(f, '%%!PS-Adobe-3.0 EPSF-3.0\n')
fprintf(f, '%%%%BoundingBox: %0.2f %0.2f %0.2f %0.2f\n', ...
0, 0, (pagewidth)*eps_scale, (pageheight)*eps_scale)
fprintf(f, '0.75 setlinewidth\n')
pfilename = sprintf('/Users/andy2/Documents/work/plotfile%02.0f.hpgl',
pagenumber);
pagenumber = pagenumber + 1;
p = fopen('/dev/cu.usbserial0', 'w+');
msg = fcntl (f, F_SETFL, O_NONBLOCK)
fprintf(p,'%c.R', 27); % Turn on hardware handshaking
fprintf(p,'%c.M 100;13;;13;10;0:', 27);
fprintf(p, "IN;");
% fprintf(p, 'SP 1;');
fprintf(p, 'VS 6;');
fflush(p);
clg
hold on
plot([0 ;pagewidth; pagewidth; 0; 0], [0; 0; pageheight; pageheight;
0;], 'r');
legend("off")
endif
plot([page_x; page_x+xmax-xmin; page_x+xmax-xmin; page_x; page_x],
[page_y; page_y; page_y+ymax-ymin; page_y+ymax-ymin; page_y], 'b');
%Try to string line segments together into loops.
g = 1:length(C); % use this vector to store indices to the currently
unassigned segments
lastx = 0 ; lasty = 0;
pstr = '';
while (any(g))
% find closest point in either start or end sets
if length(g) > 1
[dist gi] = min(abs(C(g,[1 3])-lastx)+abs(C(g,[2 4])-lasty));
else
gi = 1;
end
%find which column of the located row the min dist was in and call it ti
[dist ti] = min(dist);
gi = gi(ti);
if dist > 0.05 % not at or very close to the last point
if pstr ~= ''
%Plot the previous loop iter times
pstri = [find(pstr == ';') length(pstr)];
fprintf(p,(pstr(1:pstri(1)))); % move to start of loop
for i = 1:iter
for a = 1:10:length(pstri)
fprintf(p,(pstr(pstri(a):(pstri(min(a+10,length(pstri)))))));
do
fprintf(p, "%c.B\n", 27);
usleep(30000);
buff = fgets(p,4);
fclear(p)
until str2num(buff) > 1000
end
end
end
pstr = '' % start a new loop
fprintf(f, '%s', stroke)
fprintf(f, '%0.2f %0.2f moveto\n', ...
(C(g(gi), [1 3](ti)) - xmin + page_x)*eps_scale, ...
(C(g(gi), [2 4](ti)) - ymin + page_y)*eps_scale);
fprintf(f, '%0.2f %0.2f lineto\n', ...
(C(g(gi), [3 1](ti)) - xmin + page_x)*eps_scale, ...
(C(g(gi), [4 2](ti)) - ymin + page_y)*eps_scale);
pstr = sprintf('PU %0.2f, %0.2f;PD %0.2f, %0.2f;', ...
((C(g(gi), [1 3](ti)) - xmin + page_x)*plot_scale), ...
((C(g(gi), [2 4](ti)) - ymin + page_y)*plot_scale), ...
((C(g(gi),[3 1](ti)) - xmin + page_x)*plot_scale), ...
((C(g(gi),[4 2](ti)) - ymin + page_y)*plot_scale));
% plot([C(g(gi), [1 3](ti)) C(g(gi), [3 1](ti))] - xmin + page_x , ...
% [C(g(gi), [2 4](ti)) C(g(gi), [4 2](ti))] - ymin + page_y, 'b');
lastx = C(g(gi),[3 1](ti)) ; lasty = C(g(gi), [4 2](ti));
stroke = 'stroke\n'; % done this way to suppress spurious one
else % Actually at previous point
fprintf(f, '%0.2f %0.2f lineto\n', ...
(C(g(gi), [3 1](ti)) - xmin + page_x)*eps_scale, (C(g(gi), ...
[4 2](ti)) - ymin + page_y)*eps_scale);
pstr = strcat( pstr, sprintf( 'PD %0.2f, %0.2f;', ...
(C(g(gi), [3 1](ti)) - xmin + page_x)*plot_scale, (C(g(gi), ...
[4 2](ti)) - ymin + page_y)*plot_scale));
% plot([lastx C(g(gi), [3 1](ti))] - xmin + page_x, ...
% [lasty C(g(gi), [4 2](ti))] - ymin + page_y, 'b')
lastx = C(g(gi),[3 1](ti)) ; lasty = C(g(gi), [4 2](ti));
endif
g = [g(1:gi-1) g(gi+1:end)]; % remove used index from list
endwhile
if pstr ~= ''
%Plot the lasr loop of the slice iter times
pstri = [find(pstr == ';') length(pstr)];
fprintf(p,(pstr(1:pstri(1)))); % move to start of loop
for i = 1:iter
for a = 1:10:length(pstri)
fprintf(p,(pstr(pstri(a):(pstri(min(a+10,length(pstri)))))));
do
fprintf(p, "%c.B\n", 27);
usleep(30000);
buff = fgets(p,4);
fclear(p)
until str2num(buff) > 1000
end
end
end
fprintf(p, 'PU;');
fflush(p)
pstr = ''
page_x = page_x + (xmax - xmin)*1.04;
old_ymin = max(old_ymin , (ymax - ymin) * 1.04);
end
fprintf(f, '%s', stroke)
fprintf(f, '%%%%EOF\n')
fclose(f)
fclose(p)Please Log in or Create an account to join the conversation.
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