I needed to label a lot of images into 4 classes. Using the ratings of shotwell this can be really fast.
Pressing 1 to 5 to set a rating on an image.
The next step was to get the ratings for later use as labels in machine learning.
Because shotwell ...
I used a Kindle4 as status display some time ago. For some months this display was without power and I was to lazy to fix it. My solution in 2014 rooting and image generation is nowadays too complicated.Tagged as : kindle
For another project (the shackbureau) we needed to convert banking numbers from the old German system to the European system. At first we used the webpage of a German bank but after their relaunch the form was removed.
After some searching we found the data from the German federal bank ...Tagged as : oklab
- Shinyei PPD42NS: http://www.aliexpress.com/wholesale?SearchText=shinyei+ppd42ns [12€]
- NodeMCU: http://www.aliexpress.com/wholesale?SearchText=nodemcu [4€]
- two 87°C plastic tubes: http://www.hornbach.de/shop/HT-Bogen-DN-75-87-Grad/266682/artikel.html [2€]
- cable fixer: http://www.amazon.de/Br%C3%BCder-Mannesmann-M13050-Kabelbinder-Sortiment-300-tlg/dp/B003XUIGQO [5€]
- Micro ...
Stuttgart, the city I live in, is on first place for most particles in the city. But there is only one sensor in the city to measure the particles.
As OK Lab Stuttgart we want to get open data from the city or aquire our own data. In this case ...
To use the ESP8266 and the PPD42NS together we need 5V and 3.3V.
There are some ways to achieve this.
Buy a LM1117.
I didn't have a LM1117, but got a LM317 and two resistors.
The schema to build a voltage regulator with this ...Tagged as : arduino
The first steps are with an ESP8266-01.
Connect via a FTDI to the usb of your PC. I'm using FTDI Basic Program Downloader USB to TTL FT232 and Ubuntu 14.04.
Now map your ftdi pins ...Tagged as : esp8266
Task: Generate images displayable on a Kindle 4.
Example code using Python and Pillow:
# -*- coding: utf-8 -*- from PIL import Image, ImageDraw, ImageFont image = Image.new("P", (600,800), 255) # generate a 8 bit greyscale palette def palette(): for i in range(0,256): yield i;yield i; yield i image ...
Some notes on rooting a Kindle 4
The installation of the thee jailbreak as firmware update is easy (see http://wiki.mobileread.com/wiki/Kindle4NTHacking). To change more on the device the next step is to enable ssh via usbnetwork (see http://www.turnkeylinux.org/blog/kindle-root).
Some additional information ...