🚗 LM555 generates a car/bike/bicycle/scooter horn sound which is amplified by LM386

⌛ Control a relay connected device for a period of 1 to 100 seconds using a 555

This project contains a Spice model for the popular NE555 timer IC, which is widely used in electronic circuits for generating accurate time delays or oscillations.

ne555 drawn with Eagle

NE555 timer was launched in 1971 and has a history of 50 years. It is easy to use, stable and cheap, so it is still widely used, and its output in 2003 was 1 billion. Now I use NE555 to make timers. Most of the control parts of electronic door locks use this circuit. The timing method is very simple, 1.1 x RC, which is not very accurate compared…

🎹 An electronic piano that uses the 555 to generate eight different piano notes.

NE555 timer explain

NodeMCU I2C capacitive Water Level Sensor

Luminous Touch Toy made with NE555 IC & a piezo-electric sensor, with auto-off functionality.

Solenoid pulser for 12V JF-0530B

Several circuit examples supporting the following HITACHI HD44780 modules: 1) LCD1602A, v3, 2) LCD1602A, v3, with the PCF8574A chip providing I2C input and 3) LCD2004A, v1.3, with the PCF8574A chip providing I2C input. Projects require SDCC to compile.