Spartan 3 v2 Lambda Controller
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Specifications
- Product: Spartan 3 v2
- Package Contents: 1x Spartan 3 v2, 1x USB Converter, 1x
Waterproof blade fuse holder, 2x 5 Amp blade fuse
Product Usage Instructions
Exhaust Installation
Insert a 5 amp fuse into the fuse holder, cut the wire at the
midpoint, and securely close the lid. Connect one end of the fuse
holder to the Spartan 3 red wire and the other end to a switched
12V source, preferably the fuel pump relay.
Wiring
| Wire Color | Name |
|---|---|
| Red | Power |
| Black | Electronics Ground |
USB Communications
The Spartan 3 comes with a USB converter for communication with
a computer. The USB converter uses the FTDI chipset, which is
typically preinstalled on most operating systems.
Windows 10 Serial Terminal Setup
To communicate with the Spartan 3 via serial commands on Windows
10:
- Ensure Electronics Ground (Black), Heater Ground (White), and
Power (Red) are connected and the Spartan 3 is powered. - Download and install the Termite software from
https://www.compuphase.com/software_termite.htm. - In the Windows search bar, type “Device Manager” and open
it. - Locate the Spartan 3 USB converter listed as “USB Serial Port”
(e.g., COM3). - In Termite, click on Settings, verify the Port is correct
(e.g., COM3) and set the Baud rate to 9600.
Serial Commands
To enter serial commands:
- Connect Electronics Ground (Black), Heater Ground (White), and
Power (Red). - Use commands like GETHW, GETFW, SETTYPE, etc., followed by
specific values as per the usage note below.
Usage Note
Refer to the provided examples to understand how to format and
use the serial commands effectively based on the desired
settings.
FAQ
What is included in the Spartan 3 v2 package?
The package includes the Spartan 3 v2 unit, a USB converter, a
waterproof blade fuse holder, and two 5 Amp blade fuses.
How do I set up USB communications with Spartan 3?
Simply connect the USB converter to your computer. Most
operating systems already have the necessary drivers preinstalled
for the FTDI chipset used in the converter.
Can I power the Spartan 3 through USB?
No, the Spartan 3 must be powered separately using a switched
12V source.
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1. Warning
· Do not connect or disconnect the Lambda Sensor while Spartan 3 is powered. · The Lambda Sensor will get very hot during normal operation, please be careful when handling it. · Do not install the Lambda Sensor in such a manner that the unit is powered before your engine is running. An engine start can
move condensation in your exhaust system to the sensor, if the sensor is already heated this can cause thermal shock and cause the ceramic internals inside the sensor to crack and deform. · While the Lambda Sensor is in an active exhaust stream, it must be controlled by Spartan 3. Carbon from an active exhaust can easily build up on an unpowered sensor and foul it. · Lambda sensor life when used with leaded fuels is between 100-500 hrs.
2. Package Contents
1x Spartan 3 v2, 1x USB Converter, 1x Waterproof blade fuse holder, 2x 5 Amp blade fuse
3. Exhaust Installation
The Lambda sensor should be installed between the 10 o’clock and the 2 o’clock position, less than 60 degrees from vertical, this will allow gravity to remove water condensation from the sensor. For all Oxygen sensor installations, the sensor must be installed before the catalytic converter. For normally aspirated engines the sensor should be installed about 2ft from the engine exhaust port. For Turbocharged engines the sensor should be installed after the turbocharger. For Supercharged engines the sensor should be installed 3ft from the engine exhaust port.
4. Fuse
Insert 5 amp fuse into fuse holder, cut wire at midpoint, and secure lid. One end of the fuse holder connects to Spartan 3 red wire the other end of the fuse holder connects to a switched 12[v] source, fuel pump relay is normally recommended.
5.Wiring
Wire Color Red
Black White Green
Brown
Blue Purple Orange Yellow Grey
Name Power
Electronics Ground Heater Ground High Performance Analog Output Standard Performance Analog Output
CAN High CAN Low UART TX UART RX UART Ground
Connects to Switched 12[v] Ground Ground Interfacing device; ECU/Gauge/datalogger/etc…
“Rx-Orange” on USB converter “Tx-Yellow” on USB converter “Gnd-Grey” on USB converter
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Note
Use fuse holder, 12[v] should be live only when engine is running. Fuel pump relay is the recommended source. Ground where interfacing device is grounded Ground to chassis or engine block Default output is linear output; 0[v] @ 0.68 [Lambda] Linear to 5[v] @ 1.36 [Lambda], equivalent to 10-20 [AFR] for gasoline fuel Default output is heater status; 0[v] = waiting for trigger before heating sensor, 1[v] = sensor heatup started, 2[v] = sensor heatup complete and sensor heater is in closed loop control
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6. USB Communications
Spartan 3 comes with a USB converter to provide USB communications with your computer. The converter is based on the popular FTDI chipset so most operating systems already have the driver preinstalled.
7. Windows 10 serial terminal
Electronics Ground (Black), Heater Ground (white), and Power (Red) must be connected and Spartan 3 powered to enter serial commands. Spartan 3 cannot be powered through USB.
The recommended serial terminal is Termite, https://www.compuphase.com/software_termite.htm, please download and install the complete setup.
In windows 10 search bar,
please type “Device Manager” and open it.
Spartan 3 USB converter will
show up as “USB Serial Port”, in this example “COM3” is assigned to Spartan 3.
In Termite, click “Settings”
Make sure the Port is correct and that the Baud rate is “9600”.
8. Serial Commands
Electronics Ground (Black), Heater Ground (white), and Power (Red) must be connected and Spartan 3 powered to enter serial commands. Spartan 3 cannot be powered through USB.
Serial Command GETHW GETFW SETTYPEx GETTYPE SETCANFORMATx
GETCANFORMAT SETCANIDx GETCANID SETCANBAUDx
GETCANBAUD SETCANRx GETCANR
Usage Note
If x is 0 then Bosch LSU 4.9 If x is 1 then Bosch LSU ADV
x is an integer 1 to 3 character long. x=0; default x=1; Link ECU x=2; Adaptronic ECU x=3; Haltech ECU x=4; % Oxygen*100 x=5; Extended CAN format
x is an integer 1 to 4 characters long
x is an integer 1 to 7 characters long
If x is 1 the resistor is enabled. If x is 0 the resistor is disabled
Purpose Gets Hardware Version Gets Firmware version Sets LSU sensor type Gets LSU sensor type
Gets CAN format Sets 11 bit CAN id Gets 11 bit CAN id Sets CAN Baud Rate
Gets CAN Baud Rate Enable/Disable CAN Termination Resistor Gets CAN Term Res State; 1=enabled, 0=disabled
Example SETTYPE1 SETCANFORMAT0
Factory Default x=0, LSU 4.9 x=0
SETCANID1024 SETCANID128
SETCANBAUD1000000 will set CAN Baud rate to 1Mbit/s
SETCANR1 SETCANR0
x=1024
X=500000, 500kbit/s
x=1, CAN term Res Enabled
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SETAFRMxx.x GETAFRM SETLAMFIVEVx.xx
GETLAMFIVEV SETLAMZEROVx.xx
GETLAMZEROV SETPERFx GETPERFx SETSLOWHEATx
GETSLOWHEAT MEMRESET SETLINOUTx.xxx
DOCAL
GETCAL RESETCAL SETCANDRx
xx.x is a decimal exactly 4 characters long including decimal point
x.xx is a decimal exactly 4 characters long including decimal point. Minimum value is 0.60, maximum value is 3.40. This value can be higher or lower than the SETLAMZEROV value.
x.xx is a decimal exactly 4 characters long including decimal point. Minimum value is 0.60, maximum value is 3.40. This value can be higher or lower than the SETLAMFIVEV value.
If x is 0 then standard performance of 20ms. If x is 1 then high performance of 10ms. If x is 2 then optimize for lean operation.
If x is 0 then sensor is heated at normal rate during initial power up. If x is 1 then sensor is heated at 1/3 the normal rate during initial power up. If x is 2 then wait, a max of 10 min, for MS3 CAN RPM signal before heating. If x is 3 then wait, a max of 10 min, for exhaust gas to heat sensor to 350C before heating. Requires Firmware 1.05 and above
Where x.xxx is a decimal exactly 5 characters long including decimal point, greater than 0.000 and less than 5.000. Linear Output will resume normal operation on reboot. Pull sensor out of the exhaust. Power on wideband controller with sensor connected for about 5 minutes then issue the DOCAL command.
Requires Firmware 1.04 and above Requires Firmware 1.04 and above
x is an integer 1 to 4 characters long Requires Firmware 1.04 and above
Sets AFR Multiplier for Torque app Gets AFR Multiplier for Torque app Sets Lambda at 5[v] for the linear output
Gets the Lambda at 5[v] Sets Lambda at 0[v] for the linear output
Gets Lambda at 0[v]
Gets performance
Gets slowheat setting Reset to factory settings. Allows the user to set the High Perf Linear Output to a specific voltage
Do Free Air Calibration and display the value. A perfect sensor will have a value of 1.00. Recommended for clone sensors only. Gets Free Air Calibration value Resets Free Air Calibration value to 1.00 Sets CAN Data Rate in hz
GETCANDR
Requires Firmware 1.04 and above
Gets CAN Data Rate
SETNBMODEx
If x is 0 then Standard Performance Analog
Selects the function of the
Output is Simulated Narrowband.
Standard Performance Analog
If x is 2 then Standard Performance Analog
Output between Simulated
Output is Heater Status
Narrowband and Heater Status
GETNBMODE
Gets Standard Performance
Analog Output mode
SETNBSWLAMx.xxx
x.xxx is a decimal exactly 5 characters long
Sets the Simulated Narrowband
including decimal point. Requires Firmware
Switch Point in Lambda
1.08 and above
GETNBSWLAM
Gets the Simulated Narrowband
switch point in Lambda
*All commands are in ASCII, case does not matter, spaces do not matter.
SETAFM14.7 SETAFM1.00 SETLAMFIVEV1.36 SETLAMZEROV0.68 SETPERF1 SETSLOWHEAT1
SETLINOUT2.500
For optimal performance, CAN Data Rate should be 200hz SETNBMODE0
SETNBSWLAM1.005
xx.x=14.7 x.xx=1.36 x.xx=0.68 x=1, high performance x=0, normal sensor heatup rate
x=50 x=2, Heater Status x.xxx=1.000
9. CAN Bus Protocol Default Format (Lambda)
For %O2 CAN Format please see “Spartan 3 and Spartan 3 Lite for Lean Burn and Oxygen Metering Applications.pdf” Spartan 3’s CAN Bus operates with 11 bit addressing. Default CAN Baud rate is 500kbit/s Default CAN Termination resistor is enabled, this can be changed by sending “SETCANRx” serial command. Default CAN Id is 1024, this can be changed by sending “SETCANIDx” serial command. Data Length (DLC) is 4. Default Data Rate is 50 hz, data is sent every 20[ms], this can be changed by sending “SETCANDRx” serial command. Big-endian for all data
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Data[0] = Lambda x1000 High Byte Data[1] = Lambda x1000 Low Byte Data[2] = LSU_Temp/10 Data[3] = Status Lambda = (Data[0]<<8 + Data[1])/1000
Sensor Temperature [C] = Data[2]*10
Status
Status Value (decimal) 0 1 2 3 4+
Meaning Reserved Waiting for trigger before heating up Sensor is heating up Sensor in normal operation Reserved
CAN Format Name Link ECU CAN Format
CAN Format Serial Command SETCANFORMAT1
Adaptronic ECU CAN Format MegaSquirt 3 ECU CAN Format Haltech ECU CAN Format YourDyno Dyno Controller CAN Format MaxxECU
Extended CAN Format
SETCANFORMAT2
SETCANFORMAT0
(Default from factory)
SETCANFORMAT3
SETCANFORMAT0
(Default from factory)
SETCANFORMAT0
(Default from factory)
SETCANFORMAT5
10. Supported CAN Formats
CAN Id Serial Command SETCANID950
CAN BAUD Rate Serial Command SETCANBAUD1000000
SETCANID1024
(Default from factory)
SETCANID1024
(Default from factory)
Not required
SETCANBAUD1000000
SETCANBAUD500000
(Default from factory)
SETCANBAUD1000000
SETCANID1024
(Default from factory)
SETCANID1024
(Default from factory)
SETCANBAUD1000000
SETCANBAUD500000
(Default from factory)
Note
Read “Link G4+ ECU CAN Bus Configuration for Spartan 3.pdf”
Read “Interfacing Spartan 3 to MegaSquirt 3.pdf” Spartan 3 Emulates Haltech WBC1 wideband controller
Read “Interfacing Spartan 3 to MaxxECU.pdf” Read “Spartan 3 Extend CAN Format.pdf” Requires Firmware 1.08 and above.
11. CAN Termination Resistor:
Suppose we call the ECU; Master, and devices that send/receive data to/from the ECU we call; Slave (Spartan 3, digital dashboard, EGT controller, etc…). In most applications there is one Master (ECU) and one or more Slaves that all share the same CAN Bus. If Spartan 3 is the only Slave on the CAN Bus then the CAN Termination Resistor on Spartan 3 should-be enabled using the serial command “SETCANR1”. By default the CAN Termination Resistor on Spartan 3 is enabled. If There are multiple Slaves, the Slave that is farthest from the Master (based on wire length) should have the CAN Termination Resistor enabled, all other Slaves should have their CAN Termination Resistor disabled/disconnected. In practice; it often does not matter if the CAN Termination Resistors are properly set, but for highest reliability the CAN Termination Resistors should be properly set.
12. Bootloader
When Spartan 3 is powered up without the LSU Heater Ground, white wire, connected it will enter bootloader mode. Powering up Spartan 3 with the Heater Ground connected will not trigger the bootloader and Spartan 3 will work as normal.
Warranty
14Point7 warrants Spartan 3 to be free from defects for 2 years.
Disclaimer
14Point7 is liable for damages only up to the purchase price of its products. 14Point7 products should not be used on public roads.
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Documents / Resources
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14POINT7 Spartan 3 v2 Lambda Controller [pdf] User Manual Spartan 3 v2 Lambda Controller, Spartan 3 v2, Lambda Controller, Controller |