In the last year I have formed a business partnership with established visual artists Philip and Dawn Gamblen, who I have worked with on a subcontract basis for several years.

One of the public artwork projects that we completed in 2016 was for a local property developer.

The new residential development called for an artwork mounted on a street-facing wall of the small suburban apartment block to enhance the appeal of the development.

Our proposal for a damask-inspired design was accepted by the assessment panel. It features shapes of local wildflowers and uses UV-resistant artificial plants mounted on powder-coated, laser-cut 6mm sheet aluminium. The sheet aluminium of the artwork is mounted 120mm off the wall to maximise the day-time shadows cast onto the wall, and night-time LED lighting. In the evenings, the artwork is back-lit with 16 x 10 watt RGB LEDs. The IP67 low-profile lights are a custom design, where the COB LED chips are mounted directly onto the rear of the 6mm aluminium panels for cooling, resulting in a very low-profile.

The lighting is driven by a PICAXE-based lighting controller, using PWM-driven P-channel MOSFETs for each on the red, green and blue channels. The high-side MOSFET drivers are current-limited for safety should a short circuit to ground occur in the artwork. The PICAXE software includes random-number generated colours which slowly transition between hues. Colour intensity and mixing is managed through a 6-slope linear to pseudo-logarithmic algorithm to compensate for the non-linear response of the human eye. This gives the viewer an improved range of perceived colours.
(Photos by Philip Gamblen, Peter Gee)