Imagine checking car wires without guessing or risk, then this Automotive Electrical Tester Circuit using 555 IC makes it possible, which shows polarity instantly with LED lights. The circuit uses a 555 timer IC, so it becomes simple and is with low cost, also it can show positive or negative voltage by using two LEDs […]
Automobile Circuits
Car Engine Heat Detector Circuit with Sound Alert
Like in previous post on Automobile Engine Overheat Alert Circuit using LED, where driver gets indication through LED, but in this circuit, driver gets alert through sound and this sound comes from IC 555, which works as astable multivibrator and generates sound signal, also we can adjust temperature level for alarm using variable resistor which […]
Automobile Engine Overheat Alert Circuit using LED
Many a times, automobile engine heat problem has become very common, engine gets too hot and driver is not aware of it early, because of this, engine damage can happen and repair cost becomes high, so we need simple system which can give early warning. This project shows a small and low cost heat alert […]
Car LED Voltmeter Circuit using IC LM324
Car LED Voltmeter Circuit using IC LM324 is useful project to check car battery voltage. LEDs show different voltage which is easy to see battery condition. Main part are LM324 op-amp which act like voltage checker. Voltmeter measures voltage between two points. This circuit is with LED voltmeter with IC LM324. The simple way is […]
Smart Vehicle Headlight Brightness Controller Circuit
Smart Vehicle Headlight Brightness Controller Circuit is a cool auto system. It changes headlight brightness auto by checking outside light. It helps driver see better and safe at night or in tunnel. Circuit uses photo-transistor, potentiometer, diode, relay and audio transistor to check light and switch high and low beam easily. Circuit Working: Parts List: […]
Building an FM Transmitter Circuit for Car Stereo
Building an FM Transmitter Circuit for Car Stereo is easy way to play music from phone, MP3 or Bluetooth on car FM radio. It sends sound on FM frequency and car radio catches it like normal station. Circuit is simple to use and is good for playing music or podcast in car without special stereo […]