ShiftX3

Introduction

Parts in the Kit

In the kit you will receive:

• ShiftX3
• 2 #6 screws for surface mounting

Dimensions

• ShiftX3 with enclosure 136 x 32 x 9.46 mm (5.35 x 1.26 x .37 inches)

Mounting ShiftX3

Attach ShiftX3 with the mounting screws and tighten until snug.

Power and connection with RaceCapture/Pro or RaceCapture/Track MK2

Suggested parts (included with the optional CAN hub accessory pack)

• RJ45 Splitter
• RJ45 network cable

Plug and Play: OBDII Cable integration

OBDII installation is effectively plug and play. Power is supplied to both ShiftX3 and RaceCapture via the OBDII connection.

• Plug the CAN hub into RaceCapture
• Plug the OBDII cable into the CAN hub
• Plug the RJ45 cable into the CAN hub
• Plug the other end of the RJ45 cable into ShiftX3

Non OBDII installation

If you have your RaceCapture installed without OBDII, you can provide power to ShiftX3 and RaceCapture via a direct wire connection.

• Note:
  • If you are powering RaceCapture/Pro directly via the main harness, this will not provide power back through the RJ45 connector, as isolation diodes are present within RaceCapture/Pro to prevent undesired back-driving of circuits. To power ShiftX3, you must provide external via the CAN hub using the technique below.
  • You can power RaceCapture/Track MK2 and ShiftX3 via the RJ45 cable connection described below. This also can power RaceCapture/Pro via RJ45 port, if desired.

• Plug the CAN hub into RaceCapture
• Plug the RJ45 cable into the CAN hub
• Plug the other end of the RJ45 cable into ShiftX3
• Prepare the RJ45 cable described below for power + ground and plug into the CAN hub

RJ45 power cable for ShiftX3

Start by snipping the RJ45 connector off the end of a patch cable, and then expose the individual wires.

If you just need power and ground, just use these connections and snip the others short.

RJ45 power and CAN connection pinout

ShiftX3 connection	RaceCapture Connection	CAT5 EIA-T568B RJ45 cable
Red	+12v	Brown
White	Ground	Orange/White
No Connection	CAN 1 High	Orange
No Connection	CAN 1 Low	Green/White
Black	CAN 2 High	Blue
Yellow	CAN 2 Low	Blue/White

Note: These color codes assume EIA-T568B RJ45 cable (check printing on the cable to confirm)

CAN Termination

CAN termination is enabled by default. To disable termination, cut the CAN Term jumper on the bottom of ShiftX3 circuit board.

CAN Base Address

The default CAN base address is 935424 (0xE4600). You can change it by breaking the trace bridging the ADR1 jumper on the bottom of the ShiftX3 circuit board.

ShiftX3 CAN bus base address setting

ADR1 jumper setting	Base address
Closed (Default setting)	935424 (0xE4600)
Open	935680 (0xE4700)

CAN Baud Rate

The default CAN baud rate is 500K. You can switch to 1MB by breaking the ADR2 Jumper on the bottom of the ShiftX3 board.

ShiftX3 CAN baud rate setting

ADR2 jumper setting	Baud Rate
Closed (Default setting)	500K
Open	1MB

Scripts

The following scripts assume ShiftX3 is the first ShiftX3 on the bus (ADR1 jumper default setting). ShiftX3 is designed to work on the CAN2 network.

Disco Lights Demo

This is a test script that exercises all of the LEDs and the 7 segment display on ShiftX3. You can use this as a first time test, as it does not rely on any sensors.

Script

Copy and paste this entire script into the scripting window, replacing any existing script.

This script will randomly set LEDs with different colors and the display will update with random numbers.

setTickRate(30)

-- Set configuration. Parameters: can bus (0=CAN1, 1=CAN2), base address, brightness, auto brightness scaling, orientation (0=normal, 1=display above LED bar)
sxSetConfig(1, 0xE4600, bright,sxAutoBrightScaling,orientInverted)

function rndc()
  return math.random(0,255)
end

function onTick()
  for i=0,9,1 do
    r = rndc()
    g = rndc()
    b = rndc()
    sxSetLed(i,1,r,g,b,0)
  end
  sxSetDisplay(0, math.random(0,9))
end

Sequential shift light

This script configures just a sequential shift light.

Script

Copy and paste this entire script, replacing any existing script:

• Default is reading RPM from the channel named "RPM"

setTickRate(30)

-- Set ShiftX3 configuration
-- Parameters: can bus (0=CAN1, 1=CAN2), base address, brightness, auto brightness scaling, orientation (0=normal, 1=display above LED bar)
sxSetConfig(1, 0xE4600, 0, 61, 0)

--config shift light
sxCfgLinearGraph(0,0,0,7000) --left to right graph, linear style, 0 - 7000 RPM range

sxSetLinearThresh(0,0,3000,0,255,0,0) --green at 3000 RPM
sxSetLinearThresh(1,0,5000,255,255,0,0) --yellow at 5000 RPM
sxSetLinearThresh(2,0,6000,255,0,0,10) --red+flash at 6500 RPM

function onTick()
  sxUpdateLinearGraph(getChannel("RPM"))
end

Shift Light + Twin Alert Example

This script shows a more complete example that demos a sequential shift light + two alerts.

Assumptions:

• Engine Temperature on the 1st alert LED, connected to first analog channel - channel name "EngineTemp"
• Oil Pressure on the 2nd alert LED, connected to second analog channel - channel name "OilPress"

Edit the script to change the analog channels you want to monitor.

Script

Copy and paste this entire script into the scripting window, replacing any existing script.

setTickRate(30)

-- Set ShiftX3 configuration
-- Parameters: can bus (0=CAN1, 1=CAN2), base address, brightness, auto brightness scaling, orientation (0=normal, 1=display above LED bar)
sxSetConfig(1, 0xE4600, 0, 61, 0)

--config shift light
sxCfgLinearGraph(0,0,0,7000) --left to right graph, linear style, 0 - 7000 RPM range

sxSetLinearThresh(0,0,3000,0,255,0,0) --green at 3000 RPM
sxSetLinearThresh(1,0,5000,255,255,0,0) --yellow at 5000 RPM
sxSetLinearThresh(2,0,6000,255,0,0,10) --red+flash at 6500 RPM

--configure first alert (right LED) as engine temperature (F)
sxSetAlertThresh(0,0,205,255,255,0,0) --yellow warning at 205F
sxSetAlertThresh(0,1,225,255,0,0,10) -- red flash at 225F

--configure second alert (left LED) as oil pressure (PSI)
sxSetAlertThresh(1,0,0,0,0,255,10) --red flash below 15 psi
sxSetAlertThresh(1,1,15,255,255,0,5) --yellow flash 15-20 PSI
sxSetAlertThresh(1,2,20,0,0,0,0) --above 20, no alert

function onTick()
  --update RPM
  sxUpdateLinearGraph(getChannel("RPM"))

  --update engine temp alert
  sxUpdateAlert(0, getChannel("EngineTemp"))

  --update oil pressure alert
  sxUpdateAlert(1, getChannel("OilPress"))
end

Predictive Lap Timer Indicator

This script enables predictive lap time visualization.

How it works

A bar extends left or right from the center of the linear graph:

• Green bar extending to the right indicates you're beating the best time
• Red bar extending to the left means you're falling behind.
• When you're close to the best time, the center blue LED illuminates.

Notes:

• The script is designed for a +/- 10 second maximum delta - so if you're ahead or behind by 10 seconds, the linear graph will be fully illuminated center-right, or center-left.
• You will need to complete a a full lap to train the predictive timer before the graph will update.

Script

Copy and paste this entire script into the scripting window, replacing any existing script.

-- Predictive time visualizer

--save best lap time
bestTime = 0

-- Set ShiftX3 configuration
-- Parameters: can bus (0=CAN1, 1=CAN2), base address, brightness, auto brightness scaling, orientation (0=normal, 1=display above LED bar)
sxSetConfig(1, 0xE4600, 0, 61, 0)

--config shift light
sxCfgLinearGraph(1,0,0,200) --center-out graph, linear style, +/- 10.0 seconds in 0.1 sec resolution

sxSetLinearThresh(0,0,0,255,0,0,0) --red if you're falling behind best lap
sxSetLinearThresh(1,0,80,0,0,255,0) --blue if you're close to best lap
sxSetLinearThresh(2,0,110,0,255,0,0) --green if you're beating best lap
setTickRate(30)

function onTick()
  local predTime = getPredTime()

  local timeDiff = (bestTime - predTime) * 60
  -- rail values 
  timeDiff = math.max(timeDiff, -10)
  timeDiff = math.min(timeDiff, 10)
  --scale values from +/- 10 sec to a 0-200 scale
  timeDiff = (timeDiff + 10) * 10

  sxUpdateLinearGraph(timeDiff)

  --update best lap time if an updated lap time is available
  local lastLapTime = getLapTime()
  if lastLapTime < bestTime or bestTime == 0 then bestTime = lastLapTime end
end

Boost Gauge

This script visualizes a single analog input channel on the linear graph.

How it works

The script configures the linear graph, then reads an analog channel and updates the graph with the current value. In this case, the value represents boost level measured from a MAP sensor.

Assumptions

• MAP sensor is on the channel named "MAP"

Script

Copy and paste this entire script into the scripting window, replacing any existing script.

setTickRate(30)

-- Set ShiftX3 configuration
-- Parameters: can bus (0=CAN1, 1=CAN2), base address, brightness, auto brightness scaling, orientation (0=normal, 1=display above LED bar)
sxSetConfig(1, 0xE4600, 0, 61, 0)

--config shift light
sxCfgLinearGraph(0,0,0, 20) --left to right graph, linear style, 0 - 20 PSI boost

sxSetLinearThresh(0,0,0,0,255,0,0) --green starting at no boost
sxSetLinearThresh(1,0,10,255,255,0,0) --yellow starting at 10 PSI boost
sxSetLinearThresh(2,0,15,255,0,0,10) --red+flash at 15 PSI boost

function onTick()
  local map = getChannel("MAP")
  --convert to PSI boost
  local boost = math.max(map - 100, 0) * .145038
  sxUpdateLinearGraph(boost)
end

ShiftX3 CAN bus API

Overview

The CAN bus API provides the configuration and control interface for ShiftX3.

Two styles of control are available:

• Low level control of LEDs - the ability to discretely set LED color and flash behavior
• High level control - configuring alert thresholds and linear graph up front, and then providing simple value updates

CAN Messages

CAN base ID

CAN base ID is 0xE3600 (931328)

Cutting the jumper ADR1 will add 256 to the base ID, allowing up to two ShiftX3 displays on the same CAN bus.

CAN Baud rate

500K and 1MB rates are supported.

500K is enabled by default; cut the jumper ADR2 on the bottom of ShiftX3 to enable 1MB.

Configuration / Runtime Options

Announcement

Broadcast by the device upon power up

CAN ID: Base + 0

Offset	What	Value
0	Total LEDs	Total number of LEDs on the device
1	Alert Indicators	Number of logical alert indicators
2	Linear Bar Graph Length	Number of LEDs in linear graph
3	Major Version	Firmware major version number
4	Minor Version	Firmware minor version number
5	Patch Version	Firmware patch version number

Statistics

Statistics information, broadcast periodically by device

CAN ID: Base + 2

Offset	What	Value
0	Major Version	Firmware major version number
1	Minor Version	Firmware minor version number
2	Patch Version	Firmware patch version number

Set Configuration Parameters Group 1

Sets various configuration options.

CAN ID: Base + 3

Offset	What	Value
0	Brightness	0 - 100; 1 = dimmest; 100 = brightest; 0 = automatic brightness control using built-in light sensor.
1	Automatic brightness scaling (Optional)	0-255; default=51. adjust this value to adjust the relative gain of the built-in light sensor when in automatic brightness mode.

Set Display

Directly sets the value of the 7 segment display.

CAN ID: Base + 50

Offset	What	Value
0	Digit index	0 (must be 0)
1	Character	ASCII value of character to display

The value of the display is set by the ASCII coded value. To set a numeric value, offset the value by 48: e.g. 48 = 0, 49 = 1, etc.

Most alphanumeric characters are supported as well, also via ASCII representation.

Set Discrete LED

A low level function to directly set any LED on the device.

CAN ID: Base + 10

Offset	What	Value
0	LED index	0 -> # of LEDs on device
1	Number of LEDs to set	0 -> # of LEDs on device (0 = set all remaining)
2	Red	0 - 255
3	Green	0 - 255
4	Blue	0 - 255
5	Flash	0-10Hz (0 = full on)

Alert Indicators

Alert Indicators are typically single LEDs or a group of LEDs treated as one logical unit. This is defined by the hardware configuration of the device.

Set Alert

Directly set an alert indicator

CAN ID: Base + 20

Offset	What	Value
0	Alert ID	0 -> # of Alert indicators
1	Red	0 - 255
2	Green	0 - 255
3	Blue	0 - 255
4	Flash	0-10Hz (0 = full on)

Set Alert Threshold

Configures an alert threshold. Up to 5 thresholds can be configured per alert indicator.

Notes:

• If the current value is greater than the last threshold, then the last threshold is selected.
• The first threshold may have a threshold value >= 0; remaining thresholds must be > 0

CAN ID: Base + 21

Offset	What	Value
0	Alert ID	0 -> # of Alert indicators
1	Threshold ID	0 - 4
2	Threshold (low byte)
3	Threshold (high byte)
4	Red	0 - 255
5	Green	0 - 255
6	Blue	0 - 255
7	Flash Hz	0 - 10 (0 = full on)

Update Current Alert Value

Updates the current value for an alert indicator. The configured alert thresholds will be applied to the current value.

CAN ID: Base + 22

Offset	What	Value
0	Alert ID	0 -> # of Alert indicators
1	Value (low byte)
2	Value (high byte)

Linear Graph

The linear graph mode provides visualizations for common scenarios:

• Sequential RPM shift light where the progression is stepped
• Linear bar graph to linearly indicate a sensor value
• Center left/right graph to indicate +/- performance against a reference - such as visualizing current predictive time vs best time

Power up default configuration

Upon power up the linear graph is configured:

• Rendering style: left->right
• Linear style: stepped
• Low Range: 0
• High Range: N/A
• Threshold :
  • Threshold value: 3000 / segment length: 3 / color RGB: (0, 255, 0) / flash: 0
  • Threshold value: 5000 / segment length: 5 / color RGB: (0, 255, 255) / flash: 0
  • Threshold value: 7000 / segment length: 7 / color RGB: (255, 0, 0) / flash: 5

Configure Linear Graph

Configures the options for the linear graph portion of the device.

Rendering style:

• If left->right, linear graph illuminates left to right
• If centered, values below the mid-point in the range extend from the center to the left, and values above the mid-point extend from the center to the right.
• If right->left, linear graph illuminates right to left

Linear style:

• if smooth, graph length is updated smoothly by interpolating the current value in-between LEDs
• If stepped, creates the visual effect of stepped progressions by setting the segment length of the threshold configuration. High Range of configuration is ignored.

CAN ID: Base + 40

Offset	What	Value
0	Rendering Style	0 = left->right, 1=center, 2=right->left
1	Linear Style	0 = Smooth / interpolated, 1 = stepped
2	Low Range (low byte)
3	Low Range (high byte)
4	High Range (low byte)	(ignored if linear style = stepped)
5	High Range (high byte)	(ignored if linear style = stepped)

Set Linear Graph Threshold

Configures a linear threshold. Up to 5 thresholds can be configured

Notes:

• If the current value is greater than the last threshold, then the last threshold is selected.
• The first threshold may have a threshold value >= 0; remaining thresholds must be > 0

CAN ID: Base + 41

Offset	What	Value
0	Threshold ID	0 - 4
1	Segment Length	0 -> # of LEDs on device (ignored if linear style is ‘smooth’)
2	Threshold (low byte)
3	Threshold (high byte)
4	Red	0 - 255
5	Green	0 - 255
6	Blue	0 - 255
7	Flash Hz	0 - 10 (0 = full on)

Update Current Linear Graph Value

Updates the current value for the linear graph

CAN ID: Base + 42

Offset	What	Value
0	Value (low byte)
1	Value (high byte)

Notifications

Notifications related to events broadcasted from ShiftX3

Button State

Indicates a change in the button state

CAN ID: Base + 60

Offset	What	Value
0	Button state	1 = button is pressed; 0 = button