Sensor schematics

Build a lightning detector with this simple circuit and unlock the secrets of approaching storms. This 300 kHz receiver faithfully detects lightning crackle, providing a crucial warning signal and inspiring your electronics projects.... [read more]

Build a responsive hand clap relay circuit powered by a 3V battery and unlock the potential of sound to control your projects. This innovative design uses a cleverly timed circuit and a discrete components build to activate and deactivate a relay with a single, powerful clap.... [read more]

Build stunning capacitive touch circuits with precision, utilizing 30 to 100 pF capacitance for innovative proximity detection and control – unlock limitless possibilities today.... [read more]

Build your own intelligent temperature-controlled circuits with this innovative design, featuring a precise LM35 sensor and a responsive TLC271 comparator. Achieve accurate temperature monitoring and control, ideal for automating fans, heaters, and beyond. Unlock limitless possibilities with this robust design, capable of powering relays and LEDs while consuming minimal power – perfect for battery-powered applications and challenging environments.... [read more]

Build your automated dusk-to-dawn lighting system with this ingenious circuit! Utilizing a 100Hz trigger, this design automatically illuminates lamps at sunset and switches them off at dawn, offering unparalleled control and convenience. Harness the power of a photoresistor and a simple circuit to create a beautiful, self-adjusting lighting experience.... [read more]

Build a dynamic noise detection system with this circuit and transform your environment! This project utilizes two op-amps to amplify room noise, triggering a flashing LED to alert you to excessive sound levels – up to 85 dB. Perfect for pinpointing uncomfortable noise levels in your bedroom, living room, or identifying potentially hazardous environments.... [read more]

Build your own automatic water level control system with this innovative circuit, utilizing a 12V relay to drive a water pump and maintain precise reservoir levels. This robust design incorporates a NOR gate IC and steel rod sensors for reliable operation, empowering you to automate your irrigation or water management projects.... [read more]

Build a smart plant watering system with this innovative circuit, signaling precisely when your green friend needs a drink. Adjust the sensitivity and watch the flashing LED guide you to optimal hydration, ensuring vibrant growth and a thriving garden.... [read more]

Automate your farm's water supply with this innovative circuit, designed to reliably fill a header tank and deliver water to eight paddocks. This system utilizes a 3HP pump and smart sensors to prevent stock shortages and costly overflows, ensuring your farm’s success.... [read more]

Build a fascinating, miniature beeper that responds to a whistle, perfect for sparking creativity and demonstrating electronics principles. This project, utilizing a CMos IC and readily available components, creates a responsive device—a testament to ingenuity and a rewarding build for any electronics enthusiast.... [read more]

Ignite your shop window displays with this innovative circuit, activating captivating animations like model trains and racing cars with a simple touch. This high-impedance super-Darlington design, powered by a 12V supply, transforms your window into a dynamic spectacle, boosting sales and creating unforgettable holiday magic.... [read more]

Build a remote water level monitoring system with this innovative circuit, utilizing a simple control unit to safeguard against mains supply issues and battery drain. This system precisely measures water levels in metal tanks, activating LEDs to signal alerts – a vital tool for proactive monitoring and control.... [read more]

Unlock limitless possibilities with this ingenious circuit! Build interactive projects, control relays, and create custom alarms – all powered by a simple voltage divider and a 40106 IC. Maximize sensitivity with a 10 Megohm resistor and explore innovative applications for robotics and electronics.... [read more]

Build a precision temperature detector and gain control over energy leaks with this innovative circuit. This comparator design, featuring a thermistor and LM393 dual comparator, precisely detects minute temperature variations, ideal for identifying drafts and optimizing energy efficiency. Illuminate with a red LED for rising temperatures and a green LED for falling temperatures – empowering you to create a smarter, more sustainable environment.... [read more]

Build a robust voltage detection circuit to safeguard your projects from power surges. This innovative design accurately monitors changes from 120V to 240Vac, utilizing LEDs and a latching circuit for immediate alerts and reliable protection – empowering you to confidently tackle demanding electrical applications.... [read more]

Build your own intelligent water level sensor and gain instant visual or auditory feedback with this innovative circuit. This project uses a 555 timer IC to create an intermittent beep or flashing LED alert, allowing you to precisely monitor water levels in tanks and containers. Empower your projects with low power consumption – a single AAA battery can last for years, making it perfect for automated systems and remote monitoring.... [read more]

Build your ultimate water detection system with this innovative electronic alarm, utilizing a classic 4093 IC to safeguard your home from unexpected leaks.... [read more]

Build innovative circuits controlling multiple appliances with this ingenious trailing socket design. Harness the power of 1000W to seamlessly manage your electronics, from amplifiers to lamps, unlocking unparalleled control and convenience.... [read more]

Build innovative circuits with this 12V relay switch, featuring a NE555 timer, BC547 transistor, and 3.3M, 3.3M, 10K, 1K, 10nF components. Create powerful and reliable switching solutions for your projects.... [read more]

Build a sophisticated light sensor circuit using a readily available red LED and a TL071 op amp. Discover how to harness the 2V photo-voltage of the LED, achieving a remarkable 60mV output with a 100MΩ input resistor, unlocking incredible sensitivity for your projects.... [read more]

Build a powerful emergency light with a 15kHz squarewave inverter and a fully adjustable 6.8V charger – perfect for reliable, off-grid lighting and rapid battery charging.... [read more]

Create a stable and reliable heating system with this proven 20-year-old design, maintaining consistent indoor temperatures despite outdoor fluctuations. Build this robust schematic featuring a 1K potentiometer and precise thermistors for ultimate control.... [read more]

Build automated lighting systems with 78xx voltage regulators and control light levels with an LDR for smart and efficient home lighting solutions.... [read more]

Build a smart refrigerator alarm to prevent food spoilage and save energy. This innovative project uses a light-dependent resistor to detect open doors, alerting you before costly energy waste and food loss. Secure your kitchen and boost your efficiency with this practical DIY solution.... [read more]

Build a reliable fridge alarm circuit with a 1.3V battery backup, designed for continuous operation and a persistent 5-second alarm. This innovative schematic provides a robust solution for detecting fridge door openings, utilizing a precise 1.3V battery and a cleverly timed circuit.... [read more]

Build a captivating timed sounder circuit for your fridge! This innovative design uses a photoresistor to trigger a 20-second beep sequence, repeated until the fridge door closes. With a simple adjustment of components, you can control the timing and create a truly unique alerting system.... [read more]

Build a responsive fire alarm circuit utilizing a thermistor to detect heat, triggering a powerful audio alert. This innovative design, featuring a NE555 timer IC and a BC548 transistor, provides a robust and easily constructed solution for safeguarding your space.... [read more]

Build a winning finish line circuit with this detailed schematic and parts list. This innovative design uses three photo transistors and a logic gate system to accurately detect the first car, illuminating the winning lane with a 25 watt lamp.... [read more]

Build a powerful AC current detector using a simple U-bolt pickup to sense currents from 30 watts up to 1458 watts, boosting your electrical sensing capabilities and unlocking new design possibilities.... [read more]

Build a powerful thermostat circuit using a 1.7K thermistor and 5K potentiometer to precisely control your space heater with this detailed schematic and achieve optimal temperature regulation.... [read more]