Hi, so i have this problem using ELM323 with arduino
i can send AT command and i receive them correctly but whenever i send "AT Si" or "AT Fi" i get "BUS INIT: BUS BUSY"
Everything is made by ELM323's datasheet diagram just added a transistor inverter to ELM323 RX pin
inverter looks like this:
Any ideas how to make communication to car's K-line successful?
P.S. I am writing commands with arduino's usb-serial converter and the atmega328 is removed from board just in case of burning something