After obsessing like a Lotus Eater for a week, I’ve finished my newly-invented (I hope) 25 Lotus Leaves puzzle!
The open source 3D Printer files are on Thingiverse; I’ve also written a How To sheet, with instructions and challenges. I modestly ;-) hope it’s as mathematically interesting as the famous 15 Puzzle… we’ll see!
For years I’ve been scribbling doodles of a Combination Puzzle I’d like to create, with ginkgo-leaf-shaped pieces that turned in place to allow or prevent their neighboring pieces from turning.
Continue reading The newly-invented, trivial, Ginkgo “puzzle”
In my previous post, I replaced the electronics of my several-year-old lunar clock design with modern parts. In this post, I’ve replaced the laser cut parts with 3D printed parts, with particular attention to the clip that holds the photo interrupter in place.
In my previous post, I designed a 3D printed sensor junction box for my well tank depth sensing project. In this post I solder… a lot.
Continue reading Well Depth Sensing: Soldering, Soldering, Soldering!
In my previous post, I finished the Web Service that the ESP8266 uses to upload well tank temperatures (and eventually a depth estimate) to a cloud database. In this post, I turn to the mechanical design of the case for the RJ45 jacks for the 1-wire interface.
In my previous post, the ESP8266 Arduino Sketch was reading 12 temperature sensors. In this post, I describe the progress on the web side of things: the PHP web service that stores temperatures in an SQL database.
Continue reading Well Depth Sensing: Temperatures are in the database
At this time of year when Sparkfun, AdaFruit, and Arduino tweets are filled with high-tech Jack O’ Lanterns, I thought I’d document the making of an Old School Jack O’ Lantern.
If you liked my 1984 desk, you might appreciate these less-olde-timey photos, of my 2014 and 2016 desks.
In my previous post I started the electronics and software for an Arduino Sketch for an ESP8266 WiFi microprocessor and several MAX31820 temperature sensors, that will eventually estimate and upload the level of water in our well water tank.
I’ve begun another Arduino/ESP8266 project: reporting the level of water in our well tank. This project will involve the ESP8266, MAX31820 temperature sensors, some mechanical work, sending data to a web-based database, and interpreting the temperature data to estimate the well water level.
