• Skip to main content
  • Skip to primary sidebar

Homemade Circuit Projects

Need circuit help? Post them in the comments! I've answered over 50,000!

Blog | Categories | About | Hire Me | Contact | Calculators-online
You are here: Home / Archives for Automobile Electronics

Automobile Electronics

GSM Car Ignition and Central Lock Circuit Using Arduino

Last Updated on June 9, 2026 by Swagatam 8 Comments

gsm car central lock circuit

In this post I will show how to construct a GSM based car security system using Arduino, which can lock and unlock car’s ignition system and central lock by sending a password SMS to car from your cellphone Car theft can be a heart break; it feels like your loved one got kidnapped. It hurts […]

Filed Under: Arduino Projects, Automobile Electronics Tagged With: Arduino, Central, GSM, Ignition, Lock

Car Reverse Parking Sensor Circuit with Alarm

Last Updated on May 16, 2026 by Swagatam 3 Comments

img 20170706 035209 2

In this post I will show how to construct a car reverse parking sensor alarm circuit using arduino, ultrasonic sensor and 2.4 GHz transceiver module. This project can be add-on feature for your car if it doesn’t sport a build-in parking sensors. Introduction The proposed project has similar functionality as traditional car parking sensor has, […]

Filed Under: Arduino Projects, Automobile Electronics Tagged With: Alarm, Parking, Reverse, Sensor

Car Tank Water Sensor Circuit

Last Updated on May 22, 2026 by Swagatam 36 Comments

car2Btank

In this article I have explained a simple car tank water sensor alarm circuit using IC 555 and a pulsating signal on the sensing probes to pevent corrosion on the probes. The idea was requested by Mr. Peter. Circuit Objectives and Requirements The Design Referring to the figure below, the proposed car tank water sensor […]

Filed Under: Automobile Electronics, Water Controller Tagged With: Sensor, Tank, Water

Understanding Motorcycle Voltage Regulator Wiring

Last Updated on May 16, 2026 by Swagatam 102 Comments

2 PinRegulatorWiring

The article provides a detailed explanation regarding the various voltage regulator wiring configurations used in motorcycles. The article was submitted by Mr. Abu-Hafss. Technical Specifications After working on different voltage regulators, I feel to share my findings on your blog so that other people may also get benefit. Please insert the diagrams appropriately in the […]

Filed Under: Automobile Electronics Tagged With: Motorcycle, Regulator, Understanding, Voltage, Wiring

10 LED Tachometer Circuit Diagram

Last Updated on May 16, 2026 by Swagatam 102 Comments

102BLED2Btacho

In this post I have explained how an accurate 10 LED tachometer circuit can be built using ordinary parts like IC 555 and IC LM3915. The idea was requested by Mr. Munsif. What is a Tachometer A tachometer is a device which is used for measuring vehicle engine RPM. Thus, it is basically used for […]

Filed Under: Automobile Electronics Tagged With: LED, Tachometer

Bluetooth Car Ignition Lock Circuit – Keyless Car Protection

Last Updated on May 16, 2026 by Swagatam 25 Comments

mainsremote

This circuit will allow the user to lock his car ignition using his phone Bluetooth, meaning the ignition can be locked/unlocked only through a specific code from the user’s cellphone Bluetooth. Overview In one of my earlier posts I have already explained how to hack a Bluetooth headset and use it for any desired switching […]

Filed Under: Automobile Electronics, Remote Control Circuits Tagged With: Bluetooth, Ignition, Keyless, Lock, Protection

  • « Go to Previous Page
  • Page 1
  • Interim pages omitted …
  • Page 4
  • Page 5
  • Page 6
  • Page 7
  • Page 8
  • Interim pages omitted …
  • Page 18
  • Go to Next Page »

Primary Sidebar

Categories

  • Arduino Projects (95)
  • Audio and Amplifier Projects (134)
  • Automation Projects (18)
  • Automobile Electronics (104)
  • Battery Charger Circuits (90)
  • Datasheets and Components (109)
  • Electronics Theory (153)
  • Energy from Magnets and Earth (43)
  • Games and Sports Projects (11)
  • Grid and 3-Phase (20)
  • Health related Projects (27)
  • Home Electrical Circuits (13)
  • Indicator Circuits (16)
  • Inverter Circuits (104)
  • Lamps and Lights (171)
  • Meters and Testers (72)
  • Mini Projects (28)
  • Motor Controller (68)
  • Oscillator Circuits (30)
  • Pets and Pests (15)
  • Power Supply Circuits (92)
  • Remote Control Circuits (50)
  • Security and Alarm (65)
  • Sensors and Detectors (107)
  • SMPS and Converters (46)
  • Solar Controller Circuits (62)
  • Temperature Controllers (44)
  • Timer and Delay Relay (51)
  • Voltage Control and Protection (44)
  • Water Controller (37)
  • Wireless Circuits (31)

People also Search

555 Circuits | 741 Circuits | LM324 Circuits | LM338 Circuits | 4017 Circuits | Ultrasonic Projects | SMPS Projects | Christmas Projects | MOSFETs | Radio Circuits | Laser Circuits | PIR Projects |

My YouTube Channel

Circuit Simulator: Draw and Simulate Schematics

circuit simulator image

Subscribe to get New Circuits in your Email

Other Links

  • Privacy Policy
  • Cookie Policy
  • Disclaimer
  • Copyright
  • Videos
  • Sitemap

Recent Comments

  • Swagatam on True MPPT Solar Controller Circuit using IC 555
  • Swagatam on SG3525 Inverter Circuits with Low Battery Cut-off and Overvoltage Regulation
  • Swagatam on Resistive Voltage Divider Calculator
  • gray on True MPPT Solar Controller Circuit using IC 555
  • B K Leelesh on SG3525 Inverter Circuits with Low Battery Cut-off and Overvoltage Regulation

Social Profiles

  • Twitter
  • YouTube
  • Instagram
  • Pinterest
  • My Facebook-Page
  • Stack Exchange
  • Linkedin

Calculators

  • ZVS Induction Heater + Tank Calculator Tool
  • Zener Diode Calculator
  • Wire Current and Thickness Calculator (Ampacity Calculator)
  • Resistive Voltage Divider Calculator
  • Transistor Base Resistor Calculator
  • Transistor Astable Multivibrator Calculator
  • TL431 Calculator
  • Solar Panel, Inverter, Battery Calculator
  • Ferrite Core Air Gap Calculator Tool
  • Parallel MOSFET Calculator Tool: How to Connect MOSFETs in Parallel Safely
  • LC Resonance Calculator for EV Battery Charger Circuits
  • LED String Series Resistor Calculator
  • PFC (Power Factor Correction) Calculator Tool: 3kW
  • Passive Power Factor Correction (PFC) Calculator
  • LM567 IC Calculator Tool
  • SMPS Flyback Boost Converter Calculator
  • Shunt Resistor Calculator for Ammeters
  • SCR and Triac Gate Resistor Calculator
  • Battery Back up Time Calculator
  • Boost Converter Calculator (Non-Isolated)
  • Bootstrap Capacitor Calculator
  • Buck Converter Calculator
  • Buck-Boost Converter Calculator
  • Capacitance Reactance Calculator
  • DCM Flyback Transformer & Wire Gauge Wire Size Calculator Tool
  • Filter Capacitor Calculator
  • IC 4047 Calculator (Frequency and PWM)
  • IC 4060 Calculator
  • IC 555 Astable Calculator
  • IC 555 Monostable Calculator
  • IC SG3525, SG3524 Calculator
  • Inductance Calculator
  • Induction Heater Inductor and Resonant Frequency Calculator
  • Induction Heater Work Coil Calculator
  • Inverter LC Filter Calculator
  • LC Resonance Calculator
  • LED Current Calculator
  • LM317, LM338, LM396 Calculator
  • NAND/NOT Gate RC Values Calculator
  • NOT, NAND Gate Frequency Calculator
  • Notch Filter Calculator Tool
  • Ohm’s Law Calculator
  • Phase Angle Phase Shift Calculator
  • Power Factor (PF) Calculator
  • RC Filter Calculator
  • Reactance Calculator
  • Sine Table Calculator for SPWM Arduino Code
  • Small Signal Transistor(BJT) and Diode Quick Datasheet
  • SMPS Calculator for Toroidal Ferrite Transformers
  • SMPS Flyback Transformer Calculator – Design by Target Duty Cycle
  • TL431 Calculator
  • Op-Amp Hysteresis Resistor Calculator

© 2026 · Swagatam Innovations