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0 votes
1 answer
804 views

Need help designing an OBD2 sniffer using an STM32 F446RE MCU

I have written a simple program that should send "NO MESSAGE!" to the serial monitor if there are no CAN messages or "A NEW MESSAGE ARRIVED!" and then the CAN message itself ...
illidan's user avatar
1 vote
2 answers
1k views

Selection criteria for microcontroller to read data from a car's CAN bus (from OBD2 to microcontroller)

I want to read data from a car's CAN bus using a micro-controller. The micro-controller is used outside the car (via OBD to micro-controller). A few micro-controllers i found with CAN interfaces are ...
PjSwaroop's user avatar
1 vote
1 answer
186 views

Getting garbage output in serial monitor while communicating with OBD using CAN interface (MCP2515) and nodemcu

I am doing a project which involves getting vehicle speed from a car's OBD port and storing it in my database using nodemcu. I am programming nodemcu using the Arduino IDE and using this library for ...
logdev's user avatar
  • 113
4 votes
1 answer
5k views

What do chips like ELM327 and STN1110 do?

What problems are the chips ELM327 and STN1110 solving? If I connect the necessary interface ICs (I mean dumb ICs, like level shifters, inverters, etc., not pre-programmed devices like ELM327) ...
Dojo's user avatar
  • 949