8mm film scanner Kotokino Mark IV
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
All articles by Heikki Hietala
The all new 3D + Robo Lab
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
Interlude – LED Segment calculator
As you have seen, I’ve been fooling around with segmented LED displays of late. It occurred to me that I … More Interlude – LED Segment calculator
Using 7 Segment LED displays, Part 2
In the previous post I showed how to build a single digit display using one 7 segment LED unit. That’s … More Using 7 Segment LED displays, Part 2
Using 7 Segment LED displays, Part 1
LED displays are everywhere, and for good reasons. They are very legible, they cost next to nothing, and they are … More Using 7 Segment LED displays, Part 1
Low cost, low impact queue monitoring system
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
8mm Film Scanner, final version with Canon 1000D
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
How to enter the Internet of Things
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
Moving on from Arduino to ESP32 – Part 3, uPyCraft and Blink
So, now that you have installed MicroPython and connected to it via PuTTY as explained in the previous post, it’s … More Moving on from Arduino to ESP32 – Part 3, uPyCraft and Blink
Moving on from Arduino to ESP32 – Part 2, MicroPython
In the previous post I explained the general idea behind getting an ESP32 and expanding your capabilities into the Internet … More Moving on from Arduino to ESP32 – Part 2, MicroPython