The wordpress theme of this blog is now on github: github.com/mmone/mmone-theme
A Collection of generative Algorithms
A collection of generative algorithms by Anders Hoff with sources on github.
Colmap – Open Source Photogrammetry Solution
Colmap is a free and open source photogrammetry software for Mac and Windows.
Executables: https://demuc.de/colmap/
Sources: https://github.com/colmap/colmap
Git – Updating a Fork from the upstream Repo
Add the repository this fork was created from as an upstream remote
git remote add upstream https://github.com/ORIGINAL_OWNER/ORIGINAL_REPOSITORY.
Fetch everything from upstream
git fetch upstream
Switch to the branch you want to merge
git checkout master
Merge
git merge upstream/master
OctoPrint Plugin for Klipper
I made a OctoPrint plugin for the Klipper 3D printer firmware. It’s on GitHub at: github.com/mmone/OctoprintKlipperPlugin.
Features so far:
- Simplified connection dialog.
- Restart Host and MCU processes.
- User defineable macro buttons.
- Assisted bed leveling wizard with user definable probe points.
- Dialog to set a coordinate offset for future GCODE move commands.
- PID Tuning Dialog.
- Message log displaying messages from Klipper prepended with “//” and “!!”.
Some screenshots:
Deadly Cheap Power Supply
This is why I open all power supplies before using them if at all possible.
Mounting this supply would have put the housing at mains voltage. That’s also why you should never forget the protective earth connection.
Open Source Brushless Servo
The odrive is a open source high performance brushless servo platform based on RC BLDC motors. Great Stuff!
Key Specs
- Two motor channels.
- 24V, designed for more than 100A peak current.
- 48V version just released.
- DC-DC converter, for brake resistor or energy storage.
- Encoder feedback for arbitrarily precise movements.
- Supports power regeneration.
- Optional use of a high power density battery means you can achieve >1kW peak power output with only a modest power supply.
- Open source: Hardware, Software
Interfaces
- USB Serial port — PC, BeagleBone, RaspberryPi, etc.
- CAN — CANOpen and CiA 402 is a possibility.
- UART — Arduino, mBed, etc.
- PWM — RC Recievers, Arduino, etc.
- Step/direction — Existing motion controllers
- Some general purpose digital and analogue pins
Protocols
- Many types of command modes
- Goto (position control with trajectory planning)
- Position commands
- Velocity command
- Torque command
GCODE from SVG in the Browser
Video Streaming for ARM
UV4L was originally conceived as a modular collection of Video4Linux2-compliant, cross-platform, user space drivers for real or virtual video input and output devices (with absolutely no external difference from kernel drivers), and other pluggable back-ends or front-ends.
It has evolved over the years and now includes a full-featured Streaming Server component with a customisable web UI providing a set of standard, modern and unique solutions for encrypted live bidirectional data, audio and video streaming, mirroring or conferencing over the web and for the IoT . Since recent releases UV4L has also been providing a RESTful API for the developers who want to implement their custom applications.
HDMI Capturing
The Video4Linux2 uv4l-raspicam driver for Raspberry Pi has been extended to support the TC358743 HDMI to MIPI converter chip. This chipset is often found in the B101 capture boards made by Auvidea.
Video broadcast via Wifi
This projects uses a interesting DIY approach to broadcast video via wifi. Video transmitter and receiver are never directly associated. The receiver is put into monitor mode. This results in a transmission that behaves more like a analog solution. With a weaker signal there is not an immediate disruption of the transmission but a degradation because of packet loss.