Today I went to Daiwa & Active Electronics again and bought parts for the motor circuit, IR emitter circuit, IR detectors, and SRAM. The IR emitters & detectors are a bit pricey, but I haven't been able to find them elsewhere (other than Active Electronics). Joyce :) PS Tim, the protoboard was a good buy. (They cost the same amt of $$ at Daiwa, but there's no discount.)