In order to use Carista, you must have an ELM327-compatible Bluetooth device. This is a separate piece of hardware that you plug into your vehicle’s OBD2 port in order to allow Carista to communicate with your vehicle. Carista should work with all ELM327-compatible Bluetooth devices (v1.2 or newer for OBD2 diagnostics, v1.4 or newer for manufacturer-specific diagnostics and customizations), but some low-quality devices may perform poorly or fail to connect at all. We do not sell any hardware; however, many online retailers like Amazon do, and here are some example ELM327-compatible devices:
Disclaimer: due to differences between device manufacturers, we cannot guarantee that these will work. Please look at reviews for specific sellers, etc. and make your own decision.
WARNING: Do NOT use fake devices that claim to use version 2.1 of ELM327. Practically all devices that claim version 2.1 are fake and do NOT work well even if you don’t use the v2.1 functionality. The most common symptom is that the connection just hangs and the app is stuck waiting forever.