Upgrade the 2018 C-HR head unit to the Caska S70, with 360-degree, bird's eye, and surround view options.

[keithmerc220]

I wish to activate the Dynamic Trajectory feature in the 360 functionality of a Caska S70 Head Unit installed in my wife's Toyota C-HR model NGX10R-AHXNX. To enable this feature, I must transmit the Steering Angle Sensor data from the CAN bus to the Head Unit.

The vehicle was produced in Turkey and acquired new from the local Toyota dealership in Mauritius. The vehicle was equipped with a Caska head unit installed by the dealer instead of an OEM head unit. It was equipped with a back camera and Bluetooth for telephone pairing.

[keithmerc220]

This is the second unit; the first was defective and replaced under warranty. The back camera is the third one; one was replaced under warranty, and I replaced the other two myself. We are dissatisfied with this component of the vehicle and will upgrade it by next Monday 

I am encountering an issue with this installation: the dynamic trajectory lines are nonfunctional since the head unit harnesses lack the CAN L and CAN H wires necessary for the CAN bus to transmit the Steering Angle.

[keithmerc220]

The pinout of the harnesses is located here.

I discovered a YouTube channel by Mr. Rajeev Velikkal, who has effectively interfaced with the body CAN system to retrieve steering angle readings from the Steering Angle Sensor (SAS). In his project, the steering angle assists in aligning the front wheels when the vehicle is placed in Park by emitting an audible beep if the steering wheel is misaligned. He not only reads the CAN bus but also transmits CAN messages/frames to lock or unlock the car and to activate the Brake Hold feature when reaching a specific speed. He has additionally published his code on hackster.io. His project has inspired me to facilitate the dynamic trajectory on the Caska S70 Head Unit I am installing for the 360-degree surround vision.

[keithmerc220]

His vehicle differs from mine due to its hybrid drivetrain. The grey connectors are absent in my vehicle.
 

[MrGreedy]

Impressive! Best of luck with this, as it appears quite technical and may require an expert to resolve.

[keithmerc220]

Attached are several images of the Caska S70 Head Unit installation. Calibration remains outstanding as the installer lacks a suitable flat surface; he will calibrate a batch in the second week of December. He should have notified me about that sooner; I am rather displeased.

Efforts are ongoing on my part to transmit the Steering Angle from the CAN bus to the Head Unit UART interface.

[keithmerc220]

[MrGreedy]

Delightful! Is it possible to modify the graphic to depict an actual C-HR?

[keithmerc220]

At your urging, I attempted once more with Internet access and successfully incorporated a C-HR image.

[keithmerc220]

I am perplexed as to why the installer from whom I acquired the Head Unit was unable to assist me with that; I would have willingly given a nominal fee, as the unit cost me Rs29,500, inclusive of installation. I require calibration for the 360; however, I lack the calibration cloth, and the three-week wait is intolerable for me. I will refrain from suggesting anyone to him and disapprove of his manner of communicating with clients.

Another objective is to transmit the CAN messages from the Steering Angle Sensor (SAS) to the Head Unit for dynamic trajectory, a task I am now undertaking that will require more time.

[keithmerc220]

The installer attempted; he was unsuccessful.