Electronics on My projects

Tiny IN-16 Nixie driver

Mon, 23 Feb 2026 00:00:00 +0000

This project was heavily inspired by cnlohr’s cnixxi project (github link). After watching his video on how he designed this very compact driver board for driving IN-12 nixie’s, with some very cheap parts like the CH32V003 microcontroller I was determined to make a version for the IN-16 nixie tubes I bought.

Different Nixie types driving design choices

IN-16 Nixie

IN-12 Nixie

I managed to snatch up 6 beatiful IN-16 Nixies on Ebay, these are quite a different style then the IN-12 tubes cnlohr used in his project.

Nixie supply module

Fri, 20 Feb 2026 00:00:00 +0000

I love experimenting with Nixie tubes, I find that there is a haunting, liquid beauty in the warm amber neon glow of a Nixie tube. While modern displays rely on cold, flat pixels, the Nixie tube is a miniature physics experiment captured in glass.

Each digit is a physical artifact, stacked in layers that create a mesmerizing sense of depth, turning the simple act of showing digits into a glowing tribute to mid-century aesthetics.

Plant humidity screamer

Thu, 19 Feb 2026 00:00:00 +0000

This project was inspired by a random funny video online of someone showing a device which monitors a plant’s humidity level, and if it got too low it started “screaming” with goofy prerecorded messages. I decided to do my own take of this project, and am in the process of building a similar device.

Requirements

Rechargeable, via USB-C
Capacitive moisture sensor
Nice big speaker on the front
Motion activated, so it doesn’t scream when nobody is nearby
All contained in a well designed 3D-printed case

Parts selection

Name	Value/type	Price	QTY	Link
Moisture sensor	Capacitive	1.20 EUR	1	AliExpress link
PIR motion sensor	SR602	1.06 EUR	1	AliExpress link
MP3 player module	DFPlayer	5.03 EUR	1	DFRobot link
MicroSD Card	16 GB (any size will do)	1.64 EUR	1	AliExpress link
Arduino pro mini	Or nano for built-in USB	varies	1	NL supplier
18650 Li-ion battery	INR18650-33V	1.89 EUR	1	NL supplier
18650 battery holder	Wire mount version	1.50 EUR	1	NL supplier
USB-C breakout board	Includes CC resistors	1.48 EUR	1	AliExpress link
LiPo / Li-ion battery charger	TP4056 charging board with protection	2.00 EUR	1	NL supplier
Boost converter	e.g. SX1308	varies	1	AliExpress link