The Sleepy Fairy… a low power circuit using a Mosfet Trick. Before we begin… the Story. The story is important, it holds ALL the magic… the circuit just seals the deal. While holding the canister up: Now this… Look closely. Many years ago, I was walking through the woods. It was a warm and pleasant… Continue reading The Sleepy Fairy – A simple project to create Fairy Magic.
Sometimes I forget to mention the sites I use to find all the treasures I hoard. There are a couple that I check almost religiously, because you never know what they might pop out next. Others are just fantastic businesses because, in addition to providing novel products, are also a great help to the home… Continue reading Circuits like Legos, my part sources. Or… Where to get all this fun stuff.
Source: http://makezine.com/projects/raspberry-pi-potter-wand/ Make has a write-up on wand-control with a simple reflective wand… …it *was* broken. Fixed it. Back in January when I first read the article I was so excited to try it, I ordered a bunch of parts, downloaded the Git, and then figured out it didn’t work. Not to worry though. A fellow named… Continue reading [FIXED!!!] Turn on a lamp with a gesture – Image Processing! Machine learning!
The Sense Hat What’s a hat? Hats are the term that the Raspberry PI community uses to identify bits of hardware that are made to plug into the Raspberry Pi’s GPIOs (General Purpose IO) – that row of pins along one side of your pi. There are lots of these out there to make interacting with… Continue reading Lessons on PI – Lesson 4: The Sense Hat (and a little VIM)
For a little servo background… See my article on the servo-trigger: Servo Triggers – Quickest, Fastest, Easiest way to make your servos dance To install node… See my NodeJS installation article: Installing NodeJS on a Raspberry PI Then… a little something on PWM Ok, a little background: Controlling servos works by using something called PWM or Pulse Width… Continue reading Controlling Servos from your PI (No extra hardware needed) using NodeJS
Wago 222-Series Electronics typically means soldering. Soldering means highly stressful training using soldering irons with parental-hands hovering inches from child-hands. Cords everywhere for soldering irons, lead free solder, fume extraction. All of which is mostly impossible with any size group. Turns out we live in a fairly modern time. We can connect wires with tiny… Continue reading Kid-Friendly Electronics Teaching Supplies
The power of controlling power… Interacting with the outside world is one of the most exciting aspects of programming RaspberryPIs and Arduinos. Whether you want to turn on a motor, control an air pump or activate a solenoid – all of these require using the tiny amounts of current from your pins as switches to… Continue reading Low-voltage device control with Raspberry PI (Solenoids, Pumps, Motors)