An old laptop converted to a mini desktop PC.

Front side
cDSC_0010

Back side
cDSC_0012

M6x60 x2
M5x25 x3
cDSC_0013

Debian GNU/Linux 7 (Wheezy)
cDSC_0011

ssh remote log-in to the laptop
ssh_remote_login

Posted in DIY | Tagged , , , , | Leave a comment

Arrogant brown-eared bulbul

DSC_0006 DSC_0005

Posted in Photography | Tagged , | Leave a comment

The couple of Daurian Redstart

DSC_0003

DSC_0125

It’s the male bird. DSC_0242

DSC_0292

DSC_0324

Posted in Photography | Tagged , , | Leave a comment

Hakko Presto No. 980

980-T-BI

980-T-BI Shape-BI

980-T-D

980-T-D Shape-D

Posted in DIY | Tagged , , | Leave a comment

Female Daurian Redstart

It is building a nest.

DSC_0010

DSC_0011

DSC_0082

DSC_0152

DSC_0187

DSC_0193

Posted in Photography | Tagged , , | Leave a comment

Python code to produce print surface from the level probe data

probe_0315.dat

20.00, 60.00, -0.630
0.00, 60.00, -0.690
-20.00, 60.00, -0.830
-40.00, 40.00, -0.290
-20.00, 40.00, -0.440
0.00, 40.00, -0.600
20.00, 40.00, -0.730
40.00, 40.00, -0.820
60.00, 20.00, 0.160
40.00, 20.00, -0.050
20.00, 20.00, -0.260
0.00, 20.00, -0.460
-20.00, 20.00, -0.620
-40.00, 20.00, -0.770
-60.00, 20.00, -0.890
-60.00, 0.00, 0.400
-40.00, 0.00, 0.140
-20.00, 0.00, -0.130
0.00, 0.00, -0.360
20.00, 0.00, -0.590
40.00, 0.00, -0.760
60.00, 0.00, -0.860
60.00, -20.00, 0.600
40.00, -20.00, 0.340
20.00, -20.00, 0.080
0.00, -20.00, -0.170
-20.00, -20.00, -0.410
-40.00, -20.00, -0.590
-60.00, -20.00, -0.740
-40.00, -40.00, 0.470
-20.00, -40.00, 0.160
0.00, -40.00, -0.090
20.00, -40.00, -0.330
40.00, -40.00, -0.520
20.00, -60.00, 0.300
0.00, -60.00, 0.080
-20.00, -60.00, -0.150

# http://stackoverflow.com/questions/4363857/matplotlib-color-in-3d-plotting-from-an-x-y-z-data-set-without-using-contour

from mpl_toolkits.mplot3d import Axes3D
from matplotlib.mlab import griddata
from matplotlib import cm
from matplotlib.ticker import LinearLocator, FormatStrFormatter
import matplotlib.pyplot as plt
import numpy as np
import sys


def xyz_ret(file):
    import codecs
    f = open(file, 'r')
    xyz = []
    for line in f:
        if line.startswith(codecs.BOM_UTF8):
            line = line[3:]
        ret = line.replace('\n','')
        xyz.append(map(float,(ret.split(','))))
        # xyz.append(map(float,(ret.split('\t'))))
    xyz = np.array(xyz)  
    return xyz[:,0],xyz[:,1],xyz[:,2]     


x,y,z = xyz_ret('probe_0315.dat')

fig = plt.figure()
# ax = fig.add_subplot(111, projection='3d')
ax = fig.gca(projection='3d')

xi = np.linspace(min(x), max(x))
yi = np.linspace(min(y), max(y))
X, Y = np.meshgrid(xi, yi)
Z = griddata(x, y, z, xi, yi)

surf = ax.plot_surface(X, Y, Z, rstride=1, cstride=1, cmap=cm.jet,
        linewidth=0, antialiased=True, vmin=min(z), vmax=max(z))

ax.set_xlim(min(x), max(x))
ax.set_ylim(min(y), max(y))
ax.set_zlim(min(z), max(z))


ax.set_title('Print bed level')
ax.set_xlabel('X axis [mm]')
ax.set_ylabel('Y axis [mm]')
ax.set_zlabel('Z height [mm]')
ax.zaxis.set_major_locator(LinearLocator(10))
ax.zaxis.set_major_formatter(FormatStrFormatter('%.03f'))
fig.colorbar(surf, shrink=0.5, aspect=5)

# ax.set_zlim3d(min(z), max(z))

# ax.w_zaxis.set_major_locator(LinearLocator(10)):
# ax.w_zaxis.set_major_formatter(FormatStrFormatter('%.03f'))

# fig.colorbar(surf, shrink=0.5, aspect=5)
# fig.colorbar(surf)

plt.show()

print_bed_level_graph1

Posted in Reprap 3D Printer | Tagged , , , , , , | Leave a comment

Magnetic ball joint

These are made out of chrome plated steel (for maximum magnetic strength).

The screw at the base is the usual M3x10.
The ball at the top is 3/8″, which is very close to 10mm.
You can use a 10mm socket to easily tighten them without marring the balls.
Besides the carriage, I have tested and working designs for the effector and rod ends, which I’d be happy to share on a non-commercial basis.
The carbon fiber rods came from TriDPrinting, and I also found an inexpensive source for extremely strong N50 magnets.
If you need some of the parts printed, I can even help with that.
Air mail and handling in the USA for *any* quantity is a flat $4.
I’m one of those weird people who enjoys logistics, and should be able to ship them out the next day.

Me, too!

Francisco Peebles, Matt and Stan Williams

Posted in Uncategorized | Leave a comment