PC World – Itâs not everyday that you see seven electronic devices connected to a sequencer, but Steven Litt of Crudlabs has discovered a cheap way to create a less traditional electronic sounds. Litt created Crudbox using a 16-step, 8-channel step sequencer. It is an open-source project based around an Arduino microcontroller–an electronics prototyping platform popular with music artists and those making multimedia projects like the Crudbox.