Hardware

I like playing around with hardware, I have experience with Arduino, ESP, I’ve worked briefly with an STM Nucleo.

USBSerialKeyboard

This is quite an old project of mine. I created a device with a DigiSpark and a USB to Serial converter, which types whatever you send to it through serial on a virtual Keyboard. The main use case is typing long passwords from password managers into computers from your phone.

Photo of USBSerialKeyboard.
Photo of USBSerialKeyboard.

Sprinklers

A device which interfaces with a Hunter irrigation system using their proprietary ROAM connector. I found the source code for the protocol in a comment of some old hackster.io article. I also write a simple PWA to interface with the device. I have to get around to polishing it, but right now, it only works about 50 % of the time, so the source code for it also isn’t available right now.

Circuit for the sprikler controller with a full bridge rectifier, a step down regulator, an ESP and an Arduino.
Circuit for the sprikler controller with a full bridge rectifier, a step down regulator, an ESP and an Arduino.

Arduino FBV Pedal

I have a Line 6 modelling amp at home. It can do all kinds of effects, but it’s very hard, almost impossible, to switch effects while playing. Line 6 sells a remote control pedal board, but it is very expensive for a glorified set of a few buttons. So I decided to try to make my own.

I found a great blog post by Allan Ferrency which details his attempt at something very similar, although for a different amp. This helped me very much, because after mocking up the device on a breadboard, it just started working and I only had to figure out all the codes for the different buttons my amp uses. I also ended up implementing the RS-422 protocol using MAX485s, because I had them on hand from a previous project.

The source code and circuit diagrams are available on GitLab.

I also made a casing for it from wood, which was probably the hardest part of the project, as I have no experience with woodworking.

Front side of the pedal board.
Front side of the pedal board.
Back side of the pedal board.
Back side of the pedal board.

Freeform electronics

Inspired by Jiří Praus, I started making glowing jewelry made from SMD LEDs and wire and I ended up making quite a few.

Some of the different designs of glowing jewelry I made.
Some of the different designs of glowing jewelry I made.