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Electronic Sensor Circuits & Projects Forrest M. Mims III
Publisher: Master Publishing, Inc.

Tiny Dew Sensor Circuit Diagram. On this site, This Project is linked by many of the Electronics Websites. Dew (condensed moisture) adversely affects the normal performance of sensitive electronic devices. It measures from 0°C to 100°C with a very linear output graph.For one degree change, For proper operation, voltage values of the nodes shown in the circuit must be adjusted to 90mV, 190mV, 290mV and 390mV by using multiturn trimpots. The circuit will not respond to gradual changes in brightness to avoid false alarms. This tiny circuit has no voltage source, it rather converts Rf radiations into Electric current and glow an LED =D This is most awesome project on this entire site! Light Sensor Using Arduino: Same circuit, but using Arduino code for simpler and messing up the if else statement in there is really fun! There are some kinds of LM35 IC, since it is cheap and easy to find we used LM35DZ in our project. The light sensor circuit shows the application of photodiode to detect the presence of light. This circuit was designed as an aid in parking the car near the garage wall when backing up. As shown in the schematic, temperature sensor of our electronic thermometer is LM35DZ. Electronics projects Simple Knock Alarm With Piezo Sensor circuit diagram diy project. LED D7 illuminates when bumper-wall distance is about 20 cm., D7+D6 illuminate at about 10 cm. Light-sensitive Alarm Project The circuit detects a sudden shadow falling on the light-sensor and sounds the bleeper when this happens.