How to control a device with a Kronaby smart watch
Geek that I am, until now I've avoided smart watches. The square-faced Apple Watch never appealed to me and the Android devices look too big, clunky, »
How to make a smart switch for less than $10 that works with Google Home (and other smart assistants)
Several acquaintances have asked for instructions to build a switch that can be operated from a phone app, and/or virtual assistant (Google Home, Alexa, etc) »
Measuring Speed of Rotation with an Arduino, a LED, and an LDR (Light Dependent Resistor)
A couple of days ago I watched a YouTube video where a guy pointed a device at a spinning disk. The disk's rotation speed was displayed »
A Cheap 3D Printer Brings an Entire Workshop to the Amateur Maker
This is going to be an unusual post for this site as it includes no electronics. Today I did something that astonished me. So much so, »
Make a $6 Tiny Portable Weather Station that Transmits Live Data Wherever You Are
Ask your iPhone for weather conditions and it'll display data from a sensor somewhere nearby - often at the local airport - which might be miles »
Build a Remote-Controlled Dot Matrix Message Board in 10 Minutes With Just Two Inexpensive Components
First off - I take no credit at all for this project. All praise goes to the code writer David Bird. His code is here. I »
Creating a fantastic portable sound & light show on Raspberry Pi Zero
Last summer a relative showed me his Tesla Model X do its impressive Sound & Light show. If you've never seen it, click here. I decided »
How to Make a Propellor Hub with Tinkercad
A couple of days ago I posted a blog that described how I designed and constructed an Hourglass Inverter. I used Tinkercad to design the parts. »
Build Your Own Automatic Hourglass Inverter
For nearly 10 years I've had a large hourglass sitting on my desk. It has fine sand that takes exactly 30 minutes to drop through from »
MotioneyeOS - writeimage.sh - how to configure for Mac
One of the best RasPi security cam packages is MotioneyeOS from Calin Crisan. I've written about it in a previous post. There's a great wiki for »