C++ Certified, I have successfully designed and deployed several hardware-software integrated systems in my decade-long career, giving me an unparalleled advantage to create the NodeMCU-Based Car Alcohol Detector you need. I am conversant with the NodeMCU V3 ESP 8266 as indicated in your requirements, which is essential for the successful execution of this project.
Aside from extensive knowledge in the Arduino C++, I also have vast experience in both hardware and software design, making me perfectly suited to integrate the MQ3 sensor into a robust system that not only detects alcohol but also shuts down the motors and triggers notifications through a buzzer for immediate action against drunk-driving. Through my innovative skills, your system would include GPS coordinates when alcohol is detected as well as updates regarding Firebase and system status on an LCD display.
Further evidence of my proficiency is my familiarity with JSON format, a major requirement when synchronizing data with your mobile app and Firebase for real-time monitoring. My comprehensive ability to operate within different platforms (iOS & Android), coding languages (Arduino C++ and Esphome (yaml)), and working understanding of LCD displays and GPS modules all contribute to my being perfectly suited for this project. With me, you aren't just getting a technician; you're acquiring expertise, dedication, proficiency, innovation, and passion all bundled together for your success.