Andrew ChartierLe dioxygraphe, Praxis art actuel, Sainte-Thérèse, 2008.
Photo : Erin Candela

Le dioxygraphe

This kinetic sculpture is made from a golf cart, with electrical components and a mechanized wheel with four dry chalks. A carbon dioxide detector affixed at the end of a flexible rod picks up the insidious presence and, with the help of a microcontroller, feeds a drawing machine. Operating in the street or the sidewalk, the apparatus takes some twenty seconds to leave a trace, making the environmental contaminant visible. The artist/wastician works over a long period, tracing an artery of busy streets and revealing a sort of transient document of atmospheric contamination. 

Andrew Chartier
pH GOOSE & pH DUCK, Étang aux cerises,
Parc du Mont-Orford, 2006.
Photo : Danielle Robert


The pH Duck (and pH Goose) involves a sound interpretation mechanism that sends out bilingual (French and English) informative messages on the actual state of the water. Two audible tapes have been created. The first one says: “Dear citizens! Your attention please! Local patrol for acid rain! Sensitive ecological zone!” The second pre-recorded tape consists of two different pieces of information. It is activated by an actual pH probe reading, which then feeds a data bank. According to the result, the notice goes as follows: “pH level is over 5.6, quality of water is normal!” or “pH level is under 5.6, water quality is compromised!”

Andrew Chartier, Andrew Chartier
This article also appears in the issue 64 - Waste

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