This robot vision circuit was published in the December 1986 issue of Radio Electronics magazine. The circuit uses 9 LDRs as sensors forming a sensor array. The circuit must be powered with 5 V.
This circuit is used in transceivers, enabling input selection by diode switching through polarity...
This configuration was found in an American publication from the 90s. Operators admit equivalents just...
This circuit was found in an Italian magazine Elettronica Prática of 1977. The transistors can be...