Retrotronics (a portmanteau of "retro" and "electronics", also retro-tronics) is the making of electric circuits or appliances using older electric components, such as vacuum tubes, Nixie displays, relays, uniselectors, analogue meters, etc.
Retrotronics is a popular strand within the steampunk movement. At the Oxford exhibition of Steampunk art, a third of the works on show had a strong retrotronic influence, from light fittings of period components through to computer keyboards and webcams of burnished copper and brass. Outside steampunk, similar influences are found amongst the retro-futurist scene. A recent musical trend has sought to recapture early 1980s 8-bit game and synthesiser sounds, often referred to as Chiptune. Artists such as Kid Carpet perform entire sets on children's toys or pocket synths of the period. Other artists, such as Nullsleep, perform using only period video game hardware. DJs offer dance music events built from samples of period games or gadgets.