Note – the full code is available on my GitHub page, so I will only illustrate portions of it here. … More The Donald Duck hypnotizing machine with IoT
Okay. I sort of promised some time back that I won’t be publishing a new version of the 8mm scanner, … More 8mm film scanner Kotokino Mark IV
It’s been quite a long while since I wrote last. Things have been moving rather fast and far since the … More The all new 3D + Robo Lab
I’ve been fooling around with ESP32s and a bunch of sensors lately, as you may have seen from my previous … More Low cost, low impact queue monitoring system
Some of you may have followed the saga of the 8mm scanner I built, using an Arduino and a Canon … More 8mm Film Scanner, final version with Canon 1000D
or, bumbling your way into IoT The Internet of Things is currently on everyone’s lips. It’s the facilitator par excellence, … More How to enter the Internet of Things
I got a roll of TPU Soft filament from our very good partner, Suomen 3D-Ratkaisut Oy. Thinking of uses for … More An official stamp for the 3D Lab
It’s time to wrap up this year’s busy innovation & implementation projects. As you see from previous posts, my work … More Season Finale – crafting a replacement part
NEWS FLASH – this project is now on Instructables.com. Please go see it there and vote for it in the First Time Author contest 🙂
As a kid, I was very interested in Morse code. There were a few reasons for this – my father was in the Signal Corps during WW2 and his stories of how Morse was used in the war wee fascinating. I had a rather good ear for rhythms, so I learned the codes easily. Then there was the legendary Cub Scout Handbook, as used by Huey, Dewey and Louie. The Finnish publisher of Disney books actually produced one, and of course all ten-year-olds in Finland consumed it cover to cover. One feature of it were Morse codes. My best friend was very handy with electronics already at that age, so we set up a wire between our homes and Morsed our messages to each other.
Until the trash collector truck once ripped the wire.
But anyway – it occurred to me the other day that it’d be a nice feature to have something that would be able to take in text and turn it into Morse code, both audible and LED. Continue reading The Morse Moai statue project
Ooops, it’s been a while since I was last active here, sorry about that.
But to offer someting in retribution, here’s a device that can count revolutions or any other event that closes a switch, and tell you how many times that happens in a minute.
I have a need for this device, because I am building a dolly for timelapse images. The dolly has a 2m long worm screw that makes the dolly travel along an axis. If the trip takes, say, 3 hours, and the dolly carries a camera that is set to take an image every 5 seconds, we get a 3 x 60 x 20 image timelapse, ie. 4,800 images. With 25 images per second in a video, that gives you a 192 seconds, or, a little over 3 minute time lapse. During which the camera moves, you see, it’s not just a timelapse.
Continue reading Finding rotation speed using Arduino