Here is a cool project that is worth trying. Bookmarking for myself to try one of these days.
Prusa Research launches Multi Matter addon for Prusa MK2. Have been evaluating Prusa MK2 for a long time, no it clinches the deal. Need to understand how it works before taking the leap.
It is one of those times where you think why did I not think of that. Finally a good use for Amazon Dash buttons.
This guide shows you how to hack an Amazon Dash Button to shut down or reset your Raspberry Pi.
My PrintrBot z-axis got misaligned when I inadvertently left something on the printer bed after sending a new print to be printed. Did not realize till I heard the grinding noise. I cut the power but it was already too late. Upon restarting, the Z-home was almost an inch away from the bed.
Watched couple of videos on z calibration. Manually brought down the hotend till it was almost touching the bed and then fired up the auto leveling wizard. Tried a cube print first to see if it would turn out to be ok. The resulting cube was 0.3 short all around (from earlier reference cubes printed).
The M501 command showed that the Z axis was compensated almost -1.25.
< echo:Stored settings retrieved
< echo:Steps per unit:
< echo: M92 X80.00 Y80.00 Z2020.00 E93.50
< echo:Maximum feedrates (mm/s):
< echo: M203 X125.00 Y125.00 Z5.00 E14.00
< echo:Maximum Acceleration (mm/s2):
< echo: M201 X2000 Y2000 Z30 E10000
< echo:Acceleration: S=acceleration, T=retract acceleration
< echo: M204 S3000.00 T3000.00
< echo:Advanced variables: S=Min feedrate (mm/s), T=Min travel feedrate (mm/s), B=minimum segment time (ms), X=maximum XY jerk (mm/s), Z=maximum Z jerk (mm/s), E=maximum E jerk (mm/s)
< echo: M205 S0.00 T0.00 B20000 X20.00 Z0.40 E5.00
< echo:Home offset (mm):
< echo: M206 X0.00 Y0.00 Z0.00
< echo:PID settings:
< echo: M301 P22.20 I1.08 D114.00
< echo:Min position (mm):
< echo: M210 X0.00 Y0.00 Z0.00
< echo:Max position (mm):
< echo: M211 X152.40 Y152.40 Z152.40
< echo:Bed probe offset (mm):
< echo: M212 X25.00 Y0.00 Z-1.25
Took a wild guess and adjusted the Z-axis offset by 0.5
// Reset Bed probe offset (mm)
M212 X25.00 Y0.00 Z-1.20
// Save settings
Tried cube after the reset the offset, much better z-axis 3.01 to 3.02 all around.
Was looking into 3d Scanners. Makerbot makes one that is $799 but did not feel like shelling out that much and their approach to open source. The Ciclop is a open source design by a spanish company BQ who also sells a kit by the same name. This kickstarter takes their design and has made it more affordable. This is ofcourse based on the assumption that the backers will be printing their own 3D parts for the scanner.
$99 gives you everything except for 3D printed parts.
Thingiverse had the the 3D printed parts published by BQ.
Here is a really cool project that may one day bear trying out.
Ryan shows off is take on building a Kubernetes cluster using RPi.
Possibly one of the coolest projects ever using Raspberry Pi. Zheng Wang makes a self driving car using Rpi. The main processing is handled by a PC while Raspberry handles sensor input and transmission of sensor data to PC. The RC control is handled by an Arduino which receives its control from the PC.
Source: Self Driving RC Car – Zheng Wang
Here is an exceptional mod where a teeny USB hub is paired with Raspberry PI zero in a custom case. The result looks like a professional designed product. Will need to try out.
+ Faster processor, ARM11
+ 40-pin GPIO header, backwards compatibility with previous models, can reuse extenders and HATS.
– Ethernet, have to use USB slots
Of all the things we do at Raspberry Pi, driving down the cost of computer hardware remains one of the most important. Even in the developed world, a programmable computer is a luxury item for a lot of people, and every extra dollar that we ask someone to spend decreases the chance that they’ll choose […]
Here is an idea that I hope catches on. The software Retr3D helps in custom designing a 3D Printer build based on what parts are available. So old and obsolete PCs and Printers or non functional devices can be stripped of parts and repurposed as a whole new functional 3D Printer. I remember seeing some of these printers ar Makerfaire New York last year and always wondered at teh ingenuity and skill that went in designing and repurposing old parts but now even this seems to be simplified using the software to create a custom BOM for a printer. Will be watching closely for further development!
Retr3d creates 3D printer designs based on the materials that you have access to. Retr3d can create printers form mismatch parts gathered from e-waste.
More details after the jump at Wevolver.