Freematics Forum

The new Freematics OBD-II Emlator will come with a GUI on PC (Apps on iPad and Android in future). The hardware of the new product is complete and ready to ship. However, the software develop is still under-going and this held back the release of the product. Finally it’s nearly done. Here is a glance of the GUI.



With the GUI for the emulator, it’s possible to adjust more (almost all) OBD-II PIDs in the highest possible precision. More importantly VIN and DTC can be altered and set. An ignition switch makes it possible to emulate the status on OBD-II port when ignition is on or off. More interesting features will come later, including data playback and external data sourcing.

Hello Stanley,
I would like to know if the software source could will be made available as well?
We could use some extra features like changing values via keyboard shortcuts.
Another nice option would be an option to change the pid values through a simulator file. This would allow to simulate a standard test cycle/drive.

Replay a saved log file is a feature to be added in my plan.
An Arduino library which lets Arduino to control the emulator will also be developed.
The source code of a command line tool will be released soon.

Hello, how does you GUI emulate the ignition status? How to achieve the same effect using only AT commands sent directly to the serial port of the emulator (this feature is not documented on the page with AT commands)?

Send ATACC0\r to emulate ignition off and ATACC1\r for on.

Thanks, works perfect

@stanley - could you please describe more what exactly does the Ignition ON/OFF change? You wrote on the description page that it does not emulate voltage change - so what does this do? Only emulating that e.g. ECU is not responding?

When I want to emulate the start/stop system used in modern cars, should I do it like this:

//running:
ATACC1
ATSET 010C=1000
//stop:
ATSET 010C=0
ATACC0
//start:
ATACC1
ATSET 010C=1

or it in not necessary to put ATACC in the start/stop sequence?

It is not necessary to send ATACC1. Sending ATACC0 will cause "ECU" stop responding to requests and sending ATACC1 to resume.

Does this device emulate the obd2 readiness monitors?

Will add that feature in next firmware/GUI update.