The Universal Remote Switch Box is a universal remote control receiver, fitted with 16 open-collector outputs. Each of these can be configured either as a momentary or a toggle output. In addition there is also a master/slave function built in. This Universal Remote Switch Box was inspired by the 'Easy Home Remote Control' circuit in the 2006 July/August issue (page 72). This circuit has only 4 outputs, however, and accepts only RC5 codes. To eliminate the latter limitation, the firmware of the circuit described here is based on the 'Universal Infrared Receiver' (UIR, see sidebar), which makes it suitable for all types of remote control.
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