Eclutch mod for the SRT Gearbox V10

The eClutch mod allows the gearbox to lock when the clutch pedal is not pressed. This is done by a small servo motor, controlled via the Arduino via Simhub.

The servo is powered by an external power supply.

Summary

1. Shopping list
2. Wiring
3. 3D Files
4. Code
5. Simhub
6. Assembly

1) Shopping list (V10 only)

• Servo motor DS3218 Pro 180 (Amazon, Aliexpress)
• 6V 2A DC Power supply (Amazon, Aliexpress)
• DC connector (Aliexpress)
• DIN912 : 5 x M4x8
• DIN7991 : M3x10
• DIN7991 : M3x16
• ISO7380 : M3x8

2) Wiring

The servo plugs into the eClutch port following the color code :

3) 3D Files

The files are in the “Mod eClutch” folder.

4) Code

There is a specific calibration code. You have to open the monitor and follow the steps. In the Arduino monitor. Once the calibration is done, the calibration is saved in the arduino, and you can flash the normal code of the gearbox. There is nothing to change in the code.

5) Simhub

In Simhub, once the Arduino is connected, you must enter the following line of code in the “Custom Protocol” field:

'50'     +';'+

format([Clutch],0)+';'

+format([DataCorePlugin.GameRunning],0)+';'+

'0'  

The first number determines what percentage of the clutch pedal releases the mechanism completely. Example: 60 implies that at 60% of the clutch pedal, the gearbox is free to move. Acceptable values ​​range from 0 to 100.

The last number is the offset.

6) Assembly

For assembly, please follow the following order:

1. The DC connector is mounted on the body2 next to the USB output
2. Connect the servo motor to the Arduino (signal pin on A3 by default and ground)
3. Activate the mod in the code: replace the line //define USE_SRTeCLUTCH by define USE_SRTeCLUTCH
4. Connect the Arduino to Simhub
5. Start a game and wait for the clutch to be in the unlocked position (you can press the clutch and check that the motor responds well)
6. Install the whole mechanism on the servo while it is in the unlocked position, . If necessary, you can directly adjust the position of the servo via Simhub.

If the servo is forced (it makes noise all the time), it will heat up and can deteriorate.