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Active Buzzer PCB
Description: This PCB features an active buzzer circuit that produces a 4 KHz tone when activated by setting the input to logic 0. The operating voltage range is +3.3v-5v  and operating...
Infrared Emitter LED (880nm QED123)
Description: The QED123 is a 880nm AlGaAs LED encapsulated in a clear peach tinted, plastic T-1 3/4 package. This LED functions like any other LED however it only emits infrared light which is...
Infrared Photodetector (TSSP4P38)
Description: The TSSP4P38 is a compact infrared detector module for proximity sensing application. It receives 38 kHz modulated signals and has a peak sensitivity of 940 nm. The length of the...
Magnetic Hall Effect Sensor (A1120LUA)
Description: The A1120LUA hall-effect, unipolar switches are extremely temperature stable and stree resistant sensor ICs, especially suited for operating over extended temperature ranges to...
Photoresistor (10K-50K ohm)
Description: The PDV-P9200 are Photoconductive photocells designed to sense light from 400 to 700nm. This light dependent resistors functions in the 10k to 50k ohm range and is packaged in a...
Phototransistor (880nm QSD123)
Description: The QSD123 is a phototransistor encapsulated in an infrared transparent, black T-1 3/4 package. It has a peak wavelength of 880nm matching the QED123 emitter LED perfectly. The...
PIR Infrared Motion Detector (HC-SR501)
Description: The HC-SR501 is based on infrared technology and automatic control modules, using a German importaed LHI778 probe design which has a high sensitivity, high reliability and...
Sound Detector Sensor
Description: This sound detector board uses an electret microphone and inputs an amplified audio signal from that microphone into an LM393. The output sent from that LM393 is a digital on/off...
Temperature Sensor (TMP36)
Description: The TMP36 is a low voltage, precision centigrade temperature sensor. It provides a voltage output that is linearly proportional to the Celsius (centigrade) temperature. The TMP36...
Tilt Sensor (SW-520D)
Description: This tilt sensor is manufactured with two conductive balls inside of a metalic cyclinder case. When the tilt sensor is upright at 0° tilt, the conductive balls create a...
Ultrasonic Proximity Sensor (HC-SR04)
Description: The HC-SR04 ultrasonic sensor uses sonar to determine distance to an object like bats or dolphins do. It offers excellent non-contact range detection with high accuracy and stable...