All items tagged with USB and light (3)

| Here comes a dazzling DYI project allowing you to touch an electric arc (30 kV hey presto) with your bare fingers. No harm from that. Though...

| The Peltier lamp offered by Elektor is a project with a surprising principle: power a LED reading lamp with the energy from one candle. The...

| We live in a colourful environment these days. Everything is in colour: TV, advertising billboards, mobile phone displays and LEDs. Philips...