Tinkla Relay

Do you like Tinkering with your Tesla? Do you like adding additional features to it without having to install old style switches to control them? Do you want to control additional lights or devices based on specific conditions of the car (charging, driving, turning left/right, ger forward/reverse, high beams on, blind spot monitoring signals, or specific button presses on the steering wheel)? Then Tinkla Relay is a must have Swiss Army Knife for Tesla Model S/X integrations (and very SOON Model 3/Y).

Tinkla Relay is a device that connects to your Tesla power and CAN and has 4 output relays that are turned on/off based on your settings configured via DIP switches. The maximum output for the relays is 12V and up to 3A total between all on channels at a time. This is enough to drive GPIO signals, trigger relays for larger consumers or turn on notification LEDs.

Talk: Feedback? Ideas? Comments?

What is in the box

1. The Tinkla Relay board
2. Dev harness that will allow you to connect to the OBD2 port
3. 3A mini fuse
4. Automotive grade hook and loop tape

Installing the Tinkla Relay

Tinkla Relay can be either installed using the provided harness directly into the OBD2 port or hardwired directly into the car power and CAN lines. To connect directly to Tinkla Relay you need a Molex 34791-0080 connector with the following wiring:

Tinkla Relay Wiring
Pin	Use	Connect to
1	CAN 1 Low	Chassis CAN Low
2	CAN 1 High	Chassis CAN High
3	Not Used
4	CAN 2 Low	not used on Model S/X
5	CAN 2 High	not used on Model S/X
6	Not Used
7	GND	car ground
8	12V	car accessory power or permanent power, depending on application

Virtual Buttons

Tinkla Relay creates up to 4 virtual buttons in order to control the relay outputs. These virtual buttons are combinations of quick double presses on existing steering wheel controls. Depending on the configuration selected via the DIP Switches, these virtual buttons can act alone or in combination with other logic based on car state.

In the table below we show the connection between a virtual button and the corresponding steering wheel button. In order to switch the state of the relay for that corresponding button, the user will have to double-press that particular steering wheel button quickly with no more than 0.75 s between presses.

Tinkla Relay Virtual Buttons
Virtual Button Name	Steering Wheel Button
Button 1	Menu Command
Button 2	Voice Command
Button 3	Right Wheel
Button 4	Left Wheel

DIP Switches

Switches 1-5 allows you to select one of the per-configured logic that triggers the 4 relays to turn on or off.

Switch 6 is an overall setting for all 4 relays and, if on, will keep the relays in their state even when car is off. If Switch 6 is off then all relays will be turned off when the car is off.

Switches 7 and 8 are for future use and should be always kept in the OFF position to avoid device malfunction.

Tinkla Relay Configurations
DIP Switches					Relays
Sw1	Sw2	Sw3	Sw4	Sw5	Relay 1	Relay 2	Relay 3	Relay 4
OFF	OFF	OFF	OFF	OFF	Button 1	Button 2	Button 3	Button 4
ON	OFF	OFF	OFF	OFF	Button 1 + override when car in reverse	Left turn signal	Right turn signal	Brake pressed
OFF	ON	OFF	OFF	OFF	Button 1 + override when car in reverse	Left turn signal when car in drive	Right turn signal when car in drive	Brake pressed when car in drive
ON	ON	OFF	OFF	OFF	Button 1 + override when car in reverse	Button 3	Button 4	Brake pressed
OFF	OFF	ON	OFF	OFF	Button 1 + override when car in reverse	Button 3	Button 4	Brake pressed when car in drive
ON	OFF	ON	OFF	OFF	Button 1 + override when car in reverse	High beams on	Button 3	Button 4
OFF	ON	ON	OFF	OFF	Button 1 + override when car in reverse	High beams on when car in drive	Button 3	Button 4
ON	ON	ON	OFF	OFF	Button 1 + override when car in reverse	Car in drive	Car in reverse	Button 4
OFF	OFF	OFF	ON	OFF	Button 1 + override when car in reverse	Button 2	Button 3	Button 4
ON	OFF	OFF	ON	OFF	Button 1 + override when car in reverse	Button 1 + left turn signal	Button 1 + right turn signal	Button 1 + car in drive
OFF	ON	OFF	ON	OFF	Button 1 + override when car in reverse	Button 2 + car in drive and left turn signal OR speed < 20 MPH and steering angle > 45 deg	Button 2 + car in drive and right turn signal OR speed < 20 MPH and steering angle > 45 deg	Button 4
ON	ON	OFF	ON	OFF	Button 1 + override when car in reverse	Button 2 + car in drive and left turn signal OR speed < 20 MPH and steering angle > 45 deg	Button 2 + car in drive and right turn signal OR speed < 20 MPH and steering angle > 45 deg	Button 3 + high beam
OFF	OFF	ON	ON	OFF	Button 1 + override when car in reverse	Button 2 + car in drive and left turn signal OR speed < 20 MPH and steering angle > 45 deg	Button 2 + car in drive and right turn signal OR speed < 20 MPH and steering angle > 45 deg	Button 3 + high beam when in drive
ON	OFF	ON	ON	OFF	Button 1 + override when car in reverse	Left side blind spot car present (requires 12 sensor park assist)	Right side blind spot car present (requires 12 sensor park assist)	Button 2 + high beam when in drive
OFF	ON	ON	ON	OFF	Button 1 + override when car in reverse	Left side blind spot car present (requires 12 sensor park assist)	Right side blind spot car present (requires 12 sensor park assist)	Button 2
ON	ON	ON	ON	OFF	Button 1 + override when car in reverse	Left side blind spot car present (requires 12 sensor park assist)	Right side blind spot car present (requires 12 sensor park assist)	Brake pressed when in drive
OFF	OFF	OFF	OFF	ON	Button 1 + override when car in reverse	Button 2 + high beam when in drive	Brake pressed when in drive	Car charging
ON	OFF	OFF	OFF	ON	Button 1 + override when car in reverse	Left side blind spot car present (requires 12 sensor park assist)	Right side blind spot car present (requires 12 sensor park assist)	Car charging
OFF	ON	OFF	OFF	ON	Button 1	Left side blind spot car present (requires 12 sensor park assist)	Right side blind spot car present (requires 12 sensor park assist)	Button 2
ON	ON	OFF	OFF	ON	Button 1	Left side blind spot car present (requires 12 sensor park assist)	Right side blind spot car present (requires 12 sensor park assist)	Brake pressed in drive
OFF	OFF	ON	OFF	ON	Button 1	Button 2 + high beam when in drive	Brake pressed in drive	Car charging
ON	OFF	ON	OFF	ON	Button 1	Left side blind spot car present (requires 12 sensor park assist)	Right side blind spot car present (requires 12 sensor park assist)	Car charging

If you see use for a different configuration and logic, please do not hesitate to reach out to me on Discord. If the setup has merit and can be used by others as well, i can add it to the code.