Line Following Robot DIY Project Kit biconvex lens KY 309 FINGER-DETECTING PULSE HEARTBEAT Model:With Pot Knob The Op Amp IC 667614674 stretch cord
Description
Line Following Robot DIY Project Kit biconvex lens KY 309 FINGER DETECTING PULSE HEARTBEAT Model:With Pot Knob The Op Amp IC 667614674 stretch cord KY 309 FINGER DETECTING PULSE HEARTBEAT SENSOR MODULE (IR Based) Audio output module for differential output
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