Hi. I am currently doing a final year project (FYP). My project is about detecting carbon monoxide gas leaks in the car and sending the location where the car is via a mobile application. I have included a schematic diagram for all my hardware connections for my project. I have tried to install hardware based on the schematic. But my NodeMCU ESP8266 cannot be detected in the computer if I connect the two sensors. If I only connect the MQ-7 gas sensor without the GPS module, my computer detects my NodeMCU. The pin that I just found to cause my computer not to detect NodeMCU is to connect the GPS module which is the GROUND pin. I want to ask here, what is my problem? Have a wrong wire connection or other problems?
Thanks for the help