Sensors
Temperature, humidity, distance, motion, gas, light, soil moisture and motion-tracking sensors that plug straight into Arduino, ESP32 and Raspberry Pi. Specs and wiring notes are on every product page. 12 Products
Sealed stainless-steel temperature probe with a DS18B20 inside and a 1 m cable. Measures −55 to 125 °C in water, soil or air – for aquariums, tanks, brewing and cold storage.
13.56 MHz RFID reader and writer (NXP MFRC522) with a white card and a blue key tag. Build RFID door locks, attendance systems and cashless-payment demos with Arduino or ESP32.
Five tiny capacitive touch buttons. Touch the pad – even through thin plastic or glass – and the output goes HIGH. Replace mechanical switches in lamps, panels and wearables.
Light-dependent resistor on a comparator board – detects darkness and light levels. Build automatic night lamps, street-light models and light-following robots.
Two-piece soil moisture sensor: a fork-shaped probe and an LM393 comparator board with analog and digital outputs. The classic sensor for automatic plant-watering projects.
Gas sensor module that reacts to LPG, propane, methane, hydrogen and smoke. Analog output for levels and a digital alarm output with adjustable threshold – build gas-leak and smoke alarms.
3-axis accelerometer plus 3-axis gyroscope on one I2C board. Measures tilt, rotation and motion for self-balancing robots, drones, gesture controls and step counters.
Infrared reflective sensor that detects nearby objects and outputs a clean digital signal. Adjustable range 2–30 cm – used in obstacle-avoiding robots, line followers, counters and touch-free
Passive infrared (PIR) motion sensor that detects people up to about 7 m away. Two trimpots set range and on-time – use it for automatic lights, alarms and presence detection.
More accurate big brother of the DHT11: −40 to 80 °C and 0–100 % RH on one data wire. Module with pull-up resistor fitted – ready for Arduino, ESP32 and Raspberry Pi.
Basic digital temperature and humidity sensor on a small module with the pull-up resistor and a power LED. One data wire to Arduino, ESP32 or Raspberry Pi – great for weather stations and roo
Non-contact ultrasonic distance sensor measuring 2 cm to 4 m. The standard sensor for obstacle-avoiding robots, parking sensors, water-tank level meters and school projects.
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