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)
This is the first in a series of raspberry pi classes. When the kids first show up with their hardware they need to immediately get it up and running by understanding the various bits. What is it? “The Raspberry Pi is a credit-card-sized computer that plugs into your TV and a keyboard. It is a capable… Continue reading Lessons on PI – Lesson 1: The Raspberry PI
What’s a Servo? Servos are a fundamental building block of all mad-scientist laboratories. These little guys will magically move to a position of your choosing, and stay there. As stated by Servo City: As long as the coded signal exists on the input line, the servo will maintain the angular position of the shaft. …… Continue reading Servo Triggers – Quickest, Fastest, Easiest way to make your servos dance
One of the things a good magic wand should do is respond to magic incantations. This guide will take you through getting Google Cloud Speech APIs functioning on your Raspberry PI 3 so that you can trigger speech recognition through a button press on your magic wand. The Microphone… Before you can get speech… you… Continue reading The complete guide to enabling speech recognition on an RPI3… in NodeJS
I’ve covered this in several other articles as a side effect of getting those higher level goals complete. But given a simple Google Search failed me… here is this in case someone else needs it. When you just want: “Raspberry PI3 NodeJS GPIO Control” – this is how you get it done: npm install –save… Continue reading Raspberry PI3 NodeJS GPIO Control: rpi-gpio
Today, you probably do a lot of this: ssh pi@192.168.1.108 Or even: ssh pi@raspberrypi.local At some point you’ll have a pile of Raspberry Pis around your house and you’ll have to start reserving IP addresses in your router to reliably get to them. That, or you’ll have to continuously look them up in the “attached”… Continue reading Name your PIs with mDNS – forget the IPs with ZeroConf
Digital Logger’s IOT Logic Outlets In my previous two articles – we show two ways the Raspberry Pi can control power through Wifi: Raspberry PI for controlling TP-Link POWER Raspberry PI for Controlling Wemo Power These assume wifi-enabled outlets, which are great, but there are some cases where you really want the Raspberry PI to… Continue reading Raspberry PI Controlling Power through GPIO (no wifi needed)
MagPi Issue #53 This issue of the MagPi magazine has a great set of intro-to-programming articles that are short and sweet. To boot these folks have made this magazine available for Download. Its a tremendous resource. When teaching kids, having something that gets it done fast is important, and they’ve done a great job with… Continue reading MagPi Issue #53 is Fantastic for an Intro To Python Programming!
I get asked a lot what parents should get for their kids to get started with the raspberry pi. This article has the short list of items that I consider the minimum set. (So I can simply point to this! 😉 ) Something to keep in mind – if you find you are interested in… Continue reading Get the minimum necessary Raspberry Pi Hardware
SD3000 by U-Reach Tools of the trade – The Raspberry PI Card Copier For school settings, or when trying to recreate a project multiple times, a flash card copier is a fantastic tool. It’s not cheap though, it will set you back about $140, so consider it carefully. Once you have it though – you’ll… Continue reading SD Flash Copier – Duplicate Raspberry PI Disks with ease!
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