I love going out for a ride on my bicycles, and I got tired of replacing the speedometer, so I decided to build one. I have the old reed switch and magnet from the last one, and I’m going to use it to get the reading. In this episode I show you how I connected to it, run a test to make sure it still working.
Technology
Mobile Raspberry Pi with ANY iPad. No USB-C needed.
Following on my from earlier video about pairing the Raspberry Pi 4 with the iPad Pro over USB-C, this video show how to pair any iPad (or iPhone, or Android tablet) with a Pi4 or a Pi3 over WiFi.
Not only that, but this solution solves the problem of how to charge the iPad while using the Pi, and provides a really nice interface for working with WiFi while on the go.
A Uranium Glass Marble Ring Oscillator for Your Next Steampunk Project
If you’ve never considered owning a greenish, slightly radioactive device that glows in a circular pattern, then this Uranium Glass Marble Ring Oscillator, or UMRO might change your mind. It nominally runs on a 9V battery, and is small enough that it could be worn as a steampunk-style pendant or placed into an antique flashlight case as creator Aeon Junophor did with his. Or one of his at least, as he’s geared up to build multiples of this interesting unit.
Building an Arduino-Based SSD
Normally, SD cards are used to store large amounts of data when logging information or retrieving files. However, SD cards have slow access times and require 4 GPIO pins, along with more software overhead. When using microcontrollers that are short on RAM and/or GPIO pins, such as the ATtiny family, storing large amounts of data while keeping a program small can be a large issue.
Build an 8 GHz Sampling Oscilloscope with Analog Devices’ ADCMP582 Comparator
Oscilloscopes, you don’t always need one, but when you do the good ones can cost quite a bit. There is hope. Instead of buying an expensive piece of equipment, others such as programmer Ted Yapo, decide to create their own, which he has done with his open source 8GHz Sampling Oscilloscope.
Water Cooling is DEAD. Meet the THERMOSIPHON!
The startup IceGiant is trying to change the computer cooling landscape – and according to our testing they’re off to a good start.
Pre-Order the ProSiphon Elite: https://www.icegiantcooling.com/
Arduino Nano 33 BLE Custom Debugging
Learn how get going with debugging on your Arduino Nano BLE, as well as build your own low cost debugger module in the process!
Tazer Tag Has Much Higher Stakes Than Boring Old Laser Tag
YouTuber Michael Reeves designed and built Tazer Tag, which works exactly like it sounds like it does.