8219 Results for "3D printing"

Meltdown.
Log from Arcus-3D-P1 - Pick and Place for 3D printers
There is a bug. It affects most common distributions of Machinekit. It's not their fault, and the core issue seems to reside within the kernel.Machinekit is what all of my 3D printers run. The only one which is currently operational...

Optical Tool Changer Calibration
Log from Blackbox - Tool Changing 3D Printer
After upgrading the Blackbox with a tool changer, i had to find a way to calibrate the different hotends. The required precision cannot be achieved with mechanical measuring methods. I got inspired doing it optically by a forum post at 3d-druck-community.de Instead...

Hardware is Working! Waveforms be Soon!
Log from Grid-2-Audio
Yes! The hardware is finally working! And of course, there were a couple of problems along the way. The first problem was an oscillating opamp (1.5MHz) right at the end of the signal chain. During the design I decided to remove the filtering capacitor...

SLAM
Log from QuadRotor testBed for localization and mapping
Simultaneous Localization and Mapping (SLAM):SLAM is a probabilistic technique to construct and update maps for navigation while localizing the object pose in the map. The problem appears to be a chicken and egg problem as to localize the vehicle we...

The Grand Plan
Log from EXPLOG : Exploration Logger
So far we've been discussing about the system design, which sensors to use etc. I think now I'm able to see the big picture. So here's the grand plan for the development of EXPLOG. Hardware First I need to buy all the sensors and modules from different...

Material Considerations
Log from Open Source Underwater Distributed Sensor Network
There are many concerns regarding what materials we choose to use for the clams. We have to assume that they will be lost and that animals will try to eat them. Additionally, an eventual goal is to develop clams that are benthic and can perform long-term...

Bringing it up-to-speed
Log from Science Tricorder by Olympus Heavy Industries
In the past year the external appearance of the unit hasn’t changed much, it’s all been internal hardware and code changes. As the photos show, the mainboard is getting to be a rat’s-nest of wiring with all of the changes and adaptation that I’ve done....

Log 001: Design Plan and Initial Experimentation
Log from Location Sensor Module (ROACH)
June 4th is going to be a tough deadline to make for this project because I would like to design a PCB for the module that will contain the filters and microcontroller (perhaps a PIC32). I'd like to be able to assemble the PCB at school where I have...

Mechanical Design - Cycloidal Transmission
Log from 3D Printed Robot Actuator
Typical Cycloidal Transmissions consist of four main sections. Input shaft and eccentric bearingCycloidal Gear(s)ring pins and housingOutput rollers and shaft The way that the sections are arranged are with the input shaft on one side and the output...

Sawppy Field Repair: Servo Coupler
Log from Sawppy the Rover
Every time I encounter problems at a public Sawppy appearance, it is a lesson. It might be a lesson in how I might be able to improve Sawppy’s design, or it might be a lesson in how to better prepare a kit for field repairs a.k.a. Sawppy First Aid Kit....

Wired Joystick Controller With Arduino
Log from Sawppy the Rover
As a presenter it was great to see the wealth of information provided by Maker Faire Bay Area organizers. It is clearly the compilation of many years of experience and lessons learned. One item caught my eye: anyone using wireless communication should...

Make it vibrate
Log from Cherishables
Things are going well for Cherishables, we continue to make progress on the device. One of the key questions for us is how the device will actuate and behave. Our earlier experiments pointed us in the direction of vibration as a form of output/display....

The Electronics
Log from Multiwind
Here are some images of the current schematics and PCB layouts. Overall, the prototype is working exceptionally well. I wrote a simple program for the Teensy that reads all sensors: the lower lip and oral cavity optical sensors, the upper...

Proof Of Concept
Log from HiveTracker
History Before diving in the proof of concept, it's worth reminding what was available before.The main alternative is a camera based solution and the median cost is $1999:http://www.optitrack.com/hardware/compare/This solution doesn't even scale anyway,...

Nearing Completion
Log from Persistence of Vision LED Matrix
Spent some more time on this over the weekend. The matrix was attached to some cheap board I had lying around cut into a half decent circle. the board doesn't really have any issue with vertical wobble which was my biggest concern, however it does still...

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