I bought the Elektor Sand Clock as soon as it was announced. It made an unusually daft Christmas novelty, though the noise it produces renders it fairly useless in home or office environments. In this article we will make it even noisier by adding chimes.Having assembled the Sand Clock [1], my first inclination was, as with any worthwhile gadget, to add some bells, whistles or — more obvious in this case — chimes! Because one should not be overambitious when launching a well-directed project, the present chimes are disappointingly… digital.