DIY (Arduino/Stripboard/Etc) Sequencer with variable step duration? Can't find anything that I don't have to buy a PCB for (which I am not really into). : r/synthdiy
MidiALF | MidiSizer
Erica Synths EDU DIY Sequencer: 5 steps to modular music - gearnews.com
How To Build An Arduino Powered 8-Stage Step Sequencer | Synthesizer diy, Arduino, Electronic kits