Introduction

Note: This is the old way using Lua Script. Please see the new way to integrate with your AIM Data Logging system using CAN mapping.

This CAN bus integration maps CAN bus data from AIM systems using the CAN protocol used for the SmartyCam camera system.

Connecting to the AIM system

AIM cable connection mapping
Connection	AIM Pin (Binder 702)	RaceCapture/Pro Pin (EIA-T568B Ethernet cable)
CAN High	1 (White)	2 (Orange)
CAN Low	4 (Blue)	3 (Green / White)
Ground	2 (Brown)	1 (Orange / White)
VBExt	3	N/C (Do not connect)

Note

RaceCapture/Pro provides a 12v input pin (Pin 8) on the RJ45 connector, which has a common connection to the 12v input of the RaceCapture/Pro terminal block.
This pin is rated at 1A max. We do not recommend using this pin to supply power to the AIM Smarty CAM.

Available Channels

This integration enables the following channels.

This assumes the AIM channels 1-5 are defined with the following configuration. You can customize this mapping based on your particular AIM configuration.

BMW E46 (including M3)
AIM Channel Name	RaceCapture channel name
RPM	RPM
Gear	Gear
WaterTemp	EngineTemp
Oil Press	OilPress
Oil Temp	OilTemp
Throttle Position	TPS
Head Temp	HeadTemp
Exhaust Temp	EGT
Brake Pos (channel 1)	BrakePos
Clutch Pos (channel 2)	Clutch
Brake Press (channel 3)	Brake
Steer Position (channel 4)	Steering
Lambda (channel 5)	Lambda
FuelLevel	FuelLevel

Integration Cable

Build your own

AIM uses a Binder 5-pin series 702 connector - you can modify an existing compatible cable, or make a custom cable with the appropriate connectors and splice it with an RJ45 network cable.

Get a pre-made cable

We have AIM integration cables available in our online store:

AIM Integration configuration

Direct CAN channel Mapping

Download this starter configuration to instantly import 16 pre-configured channels mapped to your AIM Smarty Cam data.

Instructions:

Save any existing channel configuration, such as your analog sensors, as this starter configuration will overwrite your current configuration.
Unzip the downloaded AIM SmartyCAM configuration and extract the .rcp file.
Connect the RaceCapture app to your RaceCapture system
Go to Setup, and press Open to open the unzipped configuration file.
Press Write to write the configuration to your RaceCapture system.
Switch to the Dashboard view to monitor and verify the AIM SmartyCAM channels.

Important Note

If you are converting from the Lua script integration to direct CAN mapping, be sure to completely remove your Lua script mapping by erasing the Lua scripting window and writing the configuration back to RaceCapture.
Full guide on CAN Mapping here.

Lua script mapping (old approach)

The original integration uses the Lua scripting technology to map AIM data channels. We recommend using the Direct CAN channel mapping approach mentioned above.

Copy this entire Lua script into the script window of RaceCapture app, and write the configuration back.

Note - ensure any existing script is removed before copying in the AIM integration script.

--AIM Smarty Cam Stream For Race Capture

--how frequently we poll for CAN messages
tickRate = 30
--the CAN baud rate
CAN_baud = 1000000
--CAN channel to listen on. 0=first CAN channel, 1=second
CAN_chan = 0
--1 for Big Endian (MSB) mode; 0 for Little Endian mode (LSB)
be_mode = 0

--add your virtual channels here
tpsId = addChannel("TPS", 10, 0, 0, 100, "%")
tempId = addChannel("EngineTemp", 1, 0, 0, 120, 'C')
oilTempId = addChannel("OilTemp", 1, 0, 0, 170, 'C')
rpmId = addChannel("RPM", 10, 0, 0, 10000, 'RPM')
oilPresId = addChannel("OilPress", 10, 2, 0, 10, 'Bar')
fuellevelId = addChannel("FuelLevel", 1, 0, 0, 120, "L")
temp1Id = addChannel ("HeadTemp" , 1, 0, 0, 170, 'C')

temp2Id = addChannel ("EGT" , 10, 0, 0, 1000, 'C')
ch1Id = addChannel ("BrakePos", 10, 0, 0, 100, "%") 
ch2Id = addChannel ("ClutchPos", 10, 0, 0, 100, "%")
ch3Id = addChannel ("Brake", 1, 0, 0, 150, "Bar")
ch4Id = addChannel ("Steering", 1, 0, -300, 300, "Deg")
ch5Id = addChannel ("Lambda", 10, 2, -1, 1, "C")
fuelPresId = addChannel ("FuelPress", 10, 2, 0, 10, "Bar")

gearId = addChannel ("Gear", 10, 0, 0, 7, "#")

--customize here for CAN channel mapping
--format is: [CAN Id] = function(data) map_chan(<channel id>, data, <CAN offset>, <CAN length>, <multiplier>, <adder>)
CAN_map = {
[1056] = function(data) map_chan(rpmId, data, 0, 2, 1, 0) map_chan(gearId, data, 4, 2, 1, 0) map_chan_le(tempId, data, 6, 2, 0.1, 0) end,
[1057] = function(data) map_chan(temp1Id, data, 0, 2, 0.1, 0) map_chan(temp2Id, data, 2, 2, 0.1, 0) map_chan(oilTempId, data, 4, 2, 0.1, 0) map_chan_le(oilPresId, data, 6, 2, 0.01, 0) end,
[1058] = function(data) map_chan(ch3Id, data, 0, 2, 0.01, 0) map_chan(tpsId, data, 2, 2, 1, 0) map_chan(ch1Id, data, 4, 2, 1, 0) map_chan(ch2Id, data, 6, 2, 1, 0) end
,
[1059] = function(data) map_chan(ch4Id, data, 0, 2, 1, 0) map_chan(ch5Id, data, 2, 2, 0.01, 0) end,
[1060] = function(data) map_chan(fuellevelId, data, 0, 2, 1, 0) map_chan(fuelPresId, data, 2, 2, 0.1, 0) end
}

function onTick()
    processCAN(CAN_chan)
end

--===========do not edit below===========
function processCAN(chan)
    repeat
        local id, e, data = rxCAN(chan)
        if id ~= nil then
            local map = CAN_map[id]
            if map ~= nil then
                map(data)        
            end
        end
    until id == nil
end

--Map CAN channel, little endian format
function map_chan_le(cid, data, offset, len, mult, add)
    offset = offset + 1
    local value = 0
    local shift = 1
    while len > 0 do
        value = value + (data[offset] * shift)
        shift = shift * 256
        offset = offset + 1
        len = len - 1
    end
    setChannel(cid, (value * mult) + add)
end

--Map CAN channel, big endian format
function map_chan_be(cid, data, offset, len, mult, add)
    offset = offset + 1
    local value = 0
    while len > 0 do
        value = (value * 256) + data[offset]
        offset = offset + 1
        len = len - 1
    end
    setChannel(cid, (value * mult) + add)
end

map_chan = (be_mode == 1) and map_chan_be or map_chan_le
initCAN(CAN_chan, CAN_baud)
setTickRate(tickRate)

AIM SmartyCam CAN

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