Recently an ad on YouTube about an acoustic light sensor/switch module piqued my interest ... In general, the design is relatively simple, so it only takes a few minutes to prepare the schematic. This ...

I needed a multichannel line tracker sensor ... the YL-70 module is the power supply indicator and the rest (D1 to D4) are signal indicators. Each signal LED illuminates as its corresponding channel ...

The new TMD2755 module’s footprint of just 1.1mm x 3.25mm is some 40% smaller than that of the next smallest comparable 3-in-1 (IR emitter + IR detector + ambient light sensor) modules on the ...