Mini Oscilloscope Clock DG7-6 Cathode Ray Tube 3”
By Andrew Gregory. Posted
This article was originally published as part of HackSpace magazine, which has since been incorporated into Raspberry Pi Official Magazine.
CRTs – cathode-ray tubes – are a ridiculous, obsolete technology. They run at a much higher voltage than LEDs – they’re bulky, fragile, and considering their ubiquity in the 1980s, there are relatively few of them around. Still, there’s something evocative about them, so we love this clock. It uses a three-inch CRT display salvaged from an old oscilloscope, brought to new life with an ESP32.
Advertisement
Get started with Raspberry Pi – everything you need to know to start your journey!
Features Editor Andrew trawls the internet for Cool Stuff while keeping the magazine running smoothly.
Subscribe to Raspberry Pi Official Magazine
Save up to 37% off the cover price and get a FREE Raspberry Pi Pico 2 W with a subscription to Raspberry Pi Official Magazine.
More articles
Get started with Raspberry Pi in Raspberry Pi Official Magazine 161
There’s loads going on in this issue: first of all, how about using a capacitive touch board and Raspberry Pi 5 to turn a quilt into an input device? Nicola King shows you how. If you’re more into sawing and drilling than needlework, Jo Hinchliffe has built an underwater rover out of plastic piping and […]
Read more →
Win one of three DreamHAT+ radars!
That’s right, an actual working radar for your Raspberry Pi. We reviewed it a few months ago and have since been amazed at some of the projects that have used it, like last month’s motion sensor from the movie Aliens. Sound good? Well we have a few to give away, and you can enter below. […]
Read more →
RP2350 Pico W5 review
It’s Raspberry Pi Pico 2, but with a lot more memory
Read more →