An optical link between an AC LED and an IR receiver module

To save time and the expense, a preliminary optical link can be constructed with a white-light AC LED and an IR receiver module. It is not easy to develop a matching optical receiver for a visible-light data transmitter with satisfied signal-to-noise ratios. Before the dedicated receiver being achieved, an off-the-shelf IR receiver module can be a proper substitution. The limitation of the pair is the reception distance and the baud rate smaller than 2500 bps because of the specification of the IR receiver module. In this paper, an approach to connect a white-light AC LED with an IR receiver module wirelessly is proposed. The result illustrates lighting with LEDs not only available for illumination but also remote controls for household appliances.