Instructions for getting a quick web crawl going with latest versions of Solr and Nutch. Assumes JRE is installed and Solr are installed

Reviewing 2 different button circuits. One being the classic circuit with resistor to ground the pin which goes HIGH when the button is pressed. The other using INPUT_PULLUP which grounds the pin to LOW without the use of a resistor.

Had a little accident when leaving the RV repair shop. Finding a replacement door isn’t gonna be easy so time to bust out the digital calipers. Cut out small section that was bent beyond repair and sketched up a rough draft of the cross section of the aluminum extrusion.

For the x, y, z steps per millimeter print out a 20x20 cube. Use calipers and measure, I ended up with the following values x 20.01mm, y 20.00 mm, z: 19.90 mm

Needed to parse some user agents out of Apache log files. After looking around at various ways, awk, csvkit, and other processor, ended up using cut with " as delimiter.

zcat 2018-*_log.gz | grep 'POST /auctions.ltemplate=auction_live.lcommtypeid=168.* 200' | cut -d\" -f 6 | sort | uniq -c -d

Looking closer at the blink sketch using LED circuit on breadboard. This site has good explanation of breadboard layout. Quick overview of the differences between digitalWrite and analogWrite. To use analogWrite for the example fade sketch an external library is needed

This is a good reference for the ESP32 pin out. A main point to note is that some of the pins, 34 to 39, are input only so cannot be set to pinMode(34, OUTPUT) for example won’t work.

Created a short video outlining the steps to get Arduino IDE setup for development on ESP32 development board. Using Espressif core code and the NODEMCU ESP-32S.

To get lightbox2 working I’m using a CDN to include the proper CSS and JS files. There are some other methods available via plugins, using HTML in the markdown for images serves it’s purpose.