There is a new and fantastic cluster of ESP32 boards that have hit the market. This is just one of them. They are WifiCameras that just work. I’ve been tinkering with cameras for a long time – using them for dog detection, facial recognition, even Nerf Battle Turrets. Before now many of those projects were… Continue reading ESP32 Cameras! Incredible power for teaching.
What is it!? It’s a small smoke generator controlled by Alexa – that allows you to evoke the chalice of fire one might imagine being part of Harry Potter’s world. The smoke is illuminated by high-ish powered lasers, and the whole thing is controlled with an ESP8266 and an Alexa Skill. How does it work?… Continue reading Wizard’s Fire!!!
If you haven’t yet figured it out. I’m a big fan of techtutorialsx – the stuff he likes is very clearly many of my own interests, and I often find myself on his site when I need to figure things out. This is yet another example: I ran across his site when needing to explain to… Continue reading ESP32 Arduino: HTTPS GET Request
Super cool article on getting web-sockets functioning on an ESP32: https://wp.me/p6Er9u-6nx Web-sockets allow for 2-way communication without the need for reloading a webpage. Now, with this trick you can communicate with your esp32, sending commands and more without fully loading a file.
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 2017 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… 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