DIY 2-Mode 555 Timer Power Auto-Off — Stop Overnight Overcharging! 🔋⚡| timer | sleep timer скачать в хорошем качестве

DIY 2-Mode 555 Timer Power Auto-Off — Stop Overnight Overcharging! 🔋⚡| timer | sleep timer

I built a tiny, cheap timer circuit using a 555 IC that can switch a device on or off after a user-set delay. It uses a 1000µF electrolytic capacitor, a 1MΩ variable resistor (pot), a relay, two diodes and a few resistors — simple parts, many salvaged from broken boards. The result: a compact, adjustable timer that’s perfect for automatically cutting power to phone and laptop chargers so they don’t stay powered all night and stress your battery. What this video shows • A quick walk-through of the circuit and how the 2-mode timer works (on-delay / off-delay). • How to set the delay with the 1MΩ pot and 1000µF capacitor. • Live demo: using the timer to cut power to a charger after a chosen time. • Tips for sourcing parts cheaply and reclaiming components from old PCBs. Why I made it If you sometimes fall asleep while charging, this little timer prevents the charger from staying powered until morning — better for your battery life and energy bills. It’s cheap, useful, and easy to build. Quick specs & parts (summary) • IC: NE555 (timer) • Capacitor: 1000 µF electrolytic • Potentiometer: 1 MΩ (variable delay) • Relay: small signal relay (e.g., TIANBO) • Diodes: 2 x general-purpose (flyback + rectifier/protection) • A handful of resistors, a pushbutton and wiring + perfboard/enclosure Build time & difficulty • Difficulty: Beginner → Intermediate (basic soldering & wiring) • Time: ~1–3 hours depending on parts/prep • Cost: very low if you reuse parts (a few dollars otherwise) Safety first! This circuit can switch mains-powered chargers — be careful. If you plan to control mains voltage, mount the relay and wiring inside a safe, insulated enclosure, observe proper clearances, and avoid working on live AC wiring unless you’re experienced. I’m demonstrating the concept; follow local electrical safety rules. Like this? If you enjoyed the project, hit LIKE 👍, SHARE it with friends who love DIY electronics, and SUBSCRIBE for more simple, practical builds. Got ideas for improvements or other uses? Drop a comment — I’d love to hear them! #DIY #Electronics #555Timer #BatterySaver #TechHacks #ArduinoFree