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d2rk / netcdf_to_mp4_demo.py
Created May 23, 2019 18:15
NetCDF to MP4 demo
import numpy as np
import xarray as xr
import cv2
import imageio
def to_rgb(data, vmin=None, vmax=None, size=None, pmin=2, pmax=98, mask=None):
if isinstance(data, list):
n_channels = len(data)
elif isinstance(data, xr.DataArray):
@d2rk
d2rk / README.md
Last active November 18, 2018 13:18
Build OpenCV for Android with LLVM C++

Download OpenCV:

$ export OPENCV_VERSION=3.4.3
$ git co opencv_contrib && cd opencv_contrib && git co $OPENCV_VERSION
$ git co opencv
$ cd opencv
$ git co $OPENCV_VERSION
$ mkdir build-arm
@d2rk
d2rk / build.sh
Created December 4, 2016 11:37
dlib for AWS lambda
$ wget --no-check-certificate -P /tmp http://flydata-rpm.s3-website-us-east-1.amazonaws.com/patchelf-0.8.tar.gz
$ tar xvf /tmp/patchelf-0.8.tar.gz -C /tmp
$ cd /tmp/patchelf-0.8 && ./configure && make && sudo make install
$ sudo yum install -y blas-devel boost-devel lapack-devel gcc-c++ cmake python-devel git
$ git clone https://github.com/davisking/dlib.git
$ cd dlib/python_examples/
$ mkdir build && cd build
$ cmake -D USE_SSE4_INSTRUCTIONS:BOOL=ON ../../tools/python
$ cmake --build . --config Release --target install
@d2rk
d2rk / flush_database.py
Created September 27, 2016 09:15
Flush Django database (postgresql)
from django.db import connection
from django.core.management import call_command
cursor = connection.cursor()
cursor.execute("DROP SCHEMA public CASCADE;")
cursor.execute("CREATE SCHEMA public;")
call_command('migrate')
@d2rk
d2rk / gist:ff270651463e53b0b093d836d4869dd7
Created September 5, 2016 12:35
Install tmux 2.2 on Ubuntu 14.04
$ apt-get install automake cmake
$ git clone -b 2.2 https://github.com/tmux/tmux /opt/tmux
$ cd /opt/tmux
$ sh autogen.sh
$ ./configure
$ make
$ /opt/tmux/tmux -V
@d2rk
d2rk / rpi_control_board.py
Last active May 19, 2016 15:10
import RPi.GPIO as GPIO
import time
LED_PINS = (31, 33, 35, 37)
BUTTON_PIN = 29
GPIO.setmode(GPIO.BOARD) # use board pin numbering
for i in LED_PINS:
GPIO.setup(i, GPIO.OUT)
@d2rk
d2rk / test.c
Created May 13, 2015 23:47
Crawler board test
#include <propeller.h>
#include <stdlib.h>
#define STP1_PIN 19
#define DIR1_PIN 18
#define STP2_PIN 17
#define DIR2_PIN 16
#define STEP_DELAY 10
@d2rk
d2rk / README.md
Last active March 16, 2020 14:37
OpenWrt 3.14.27 and OpenVPN client for CactusVPN

You can use Ubuntu configuration files from https://www.cactusvpn.com/downloads/ to setup OpenVPN.

How to setup OpenVPN client for CactusVPN:

  1. Update configuration files.
  2. Start OpenVPN as /etc/init.d/openvpn start or make it start at boot as /etc/init.d/openvpn enable.

You can also start OpenVPN client manually as follows:




  


  




    


          
    

      

        
        

          

              @d2rk
          

          

            
                d2rk
                / test_stepper_motor.c
            
            

              Created
              December 27, 2014 10:45
            

              
                Test four-wire stepper motor with Propeller QuickStart board and A4988 stepper motor driver
              
          

        

      

        

  

    
    


        



  


  

        

          
          /*
        

        

          
           * Press button FORWARD_BUTTON_ID to drive forward/backward and BACKWARD_BUTTON_ID to drive backward/forward respectively.
        

        

          
           *
        

        

          
           * How to compile:
        

        

          
           * $ propeller-elf-gcc -mlmm -std=c99 test_stepper_motor.c -o test_stepper_motor
        

        

          
           *
        

        

          
           * How to load (EEPROM) and run:
        

        

          
           * $ propeller-load -r -e test_stepper_motor
        

        

          
           */
        

  





    


  




    


          
    

      

        
        

          

              @d2rk
          

          

            
                d2rk
                / Makefile
            
            

              Last active
              August 29, 2015 14:10
            

              
                Test four-wire stepper motor with Propeller QuickStart board and L298N stepper motor driver
              
          

        

      

        

  

    
    


        



  


  

        

          
          .PHONY: all clean
        

        

          
          

        

        

          
          TARGET = test_stepper_motor
        

        

          
          

        

        

          
          WRITE_TO_EEPROM ?= true
        

        

          
          

        

        

          
          # See https://sites.google.com/site/propellergcc/documentation for details.
        

        

          
          MEMORY_MODEL ?= lmm
        

        

          
          

        

        

          
          BOARD = QUICKSTART