Sensors

The 0–25V Voltage Sensor Module is a compact voltage measurement module designed to safely measure DC voltages up to 25V using the analog input of a microcontroller. The module is based on a precision resistive voltage divider, which scales the input voltage down by a factor of 5:1, allowing voltages...

The Original LM35 Temperature Sensor is a precision analog temperature sensor designed to provide accurate temperature measurements with an output voltage that is linearly proportional to temperature in degrees Celsius. Unlike thermistors, the LM35 is factory calibrated in Celsius and does not require external calibration or trimming, making it simple...

The MQ-8 Hydrogen Gas Sensor Module is a semiconductor-based gas detection module specifically designed for detecting hydrogen (H₂) gas in the air. Built around the MQ-8 gas sensor and an onboard LM393 voltage comparator, the module provides both analog (AO) and digital (DO) outputs for easy interfacing with microcontrollers and...

The SW420 Vibration/Shock Sensor Module is a compact and highly sensitive vibration detection module designed to detect shocks, impacts, vibrations, and movement. The module is built around the SW-420 vibration switch and an onboard LM393 voltage comparator, which converts the vibration signal into a stable digital output for easy interfacing...

The TTP224 4-Channel Touch Sensor Module is a capacitive touch input module designed to replace traditional mechanical push buttons with reliable touch-sensitive controls. Based on the TTP224 capacitive touch detection IC, the module provides four independent touch pads, each with its own digital output, allowing users to easily implement touch...

The Soil Moisture Sensor Hygrometer Module is a simple and cost-effective sensor designed to measure the moisture content of soil by detecting its electrical conductivity. It consists of a soil moisture probe and an LM393 comparator module. As the moisture level in the soil changes, the resistance between the two...

The MQ-3 Gas Sensor Module is a semiconductor-based alcohol detection module designed to sense ethanol (alcohol) vapors in the air. Built around the MQ-3 gas sensor, it uses a tin dioxide (SnO₂) sensing element whose electrical conductivity increases as the alcohol concentration rises. The module provides both analog (AO) and...

The TSOP1838 IR Receiving Head is a compact infrared receiver designed to detect and decode 38kHz modulated infrared signals commonly used in remote control systems. It integrates a PIN photodiode, preamplifier, automatic gain control (AGC), band-pass filter, and demodulator into a single package, providing a clean digital output that can...

The 49E Linear Hall-Effect Sensor is a high-sensitivity analog magnetic field sensor designed to detect both the strength and polarity of magnetic fields. Unlike digital Hall sensors that simply switch ON or OFF, the 49E provides a continuous analog voltage output that changes proportionally with the magnetic field intensity, making...

The KY-035 Hall Magnetic Sensor Module is a compact analog magnetic field sensor designed to detect both the strength and polarity of magnetic fields using the AH49E (49E) linear Hall Effect sensor. Unlike digital Hall sensors that only indicate the presence of a magnetic field, the KY-035 produces a continuously...

The KY-022 Infrared IR Receiver Module is a compact infrared receiver designed to detect and decode 38kHz modulated infrared signals transmitted by standard remote controls. Built around a 1838-series IR receiver IC (such as VS1838B, TL1838, or TSOP1838 equivalent), the module converts infrared signals into clean digital pulses that can...

The KY-031 Tap Sensor Module is a compact vibration detection module designed to detect taps, knocks, shocks, and mechanical vibrations. It uses a highly sensitive spring-based vibration switch that momentarily closes when subjected to an impact or tap, generating a digital output signal that can be read by a microcontroller....