  Understanding electronics is a critical area in the maker scene. Many of the
makers' projects require electronics knowledge to connect microcontrollers with
sensors and actuators. Yet, learning electronics is challenging, as internal
component processes remain invisible, and students often fear personal harm or
component damage. Augmented Reality (AR) applications are developed to support
electronics learning and visualize complex processes. This paper reflects on
related work around AR and electronics that characterize open research
challenges around the four characteristics functionality, fidelity, feedback
type, and interactivity.
