Deutsch
EnglishJAW is the lowest priced wideband oxygen sensor reader ever.
Product Features:
- kompatibel mit dem günstigen Bosch LSU Wideband Sensor.
- Genauigkeit: 0.01 Lambda.
- 2 programmierbare Ausgänge
- Free Air Calibration
- Real-time Datenlogging
- Einstellbare refresh rate of 8-255 [hz] für das Digitaldisplay
- Lambdabereich: 0.69 bis 2.33
- AFR Bereich: 10.18 - 34.28
JAW ist Just Another Wideband Kontroller, der durch seinen niedrigen Preis besticht. JAW hat 2 programmierbare Ausgänge, RS232 Schnittstelle, 3 Echtzeit Datenaufzeichnungskanäle; AFR, RPM, externe Spannung 1,externe Spannung 2, und Sensor Temperatur, uses the low cost Bosch LSU wideband sensor ($50-$70), Accuracy to 0.01 Lambda, firmware upgradeable, and Free-Air calibration.
Serial communications for programming the analog outputs, firmware upgrades, and real-time datalogging requires a PC with Windows 98/XP/Vista, Microsoft .Net Framework, and available serial port or serial-to-usb converter.
For documentation; User Manual, DIY Assembly Guide, and Cable Construction Guides, please download the latest deployment package available here, and unzip the package, all documentation is in the "DOC" directory.
To see a video of JAW working in My 1997 Jeep TJ click here. The output is being read by my voltmeter, I have programmed one of the outputs so that the output voltage is AFR/10, 1.47[volts]=14.7[AFR].
To see a user video of JAW working in his car please click here, at the time when Eli ordered JAW the display was sold out, so he managed to get the Techedge WBO2 display working with JAW.
Specs/Tech FAQ:
JAW version 1.02 Reader Dimensions?
LxWxH :9.9cm x 5.1cm x 2.8cm
JAW version 1.03 Reader Dimensions?
LxWxH :11.1cm x 5.15cm x 2.8cm
Digital Display Gauge Dimensions?
LxWxH :8.9cm x 2.5cm x 1.15 cm
Current draw?
1.5 Amps during initial heat-up and 1.25 Amps during normal operations.
How can I mount the display connector at the back so that the install looks cleaner?
You will have to mount the 16 pin IDC connector to the back of the PCB on both JAW and the display gauge; Reverse-Mount.jpg.
How can I test that my JAW unit is functioning correctly?
For deployment packages 1.08 and above there is a new document "JAW Diagnostics.PDF" that shows you how to test your JAW unit. This document is constantly evolving and it will in time hopefully grow to encompass solutions to common problems.
How can I make the digital display gauge brighter?
R12 on the display board sets the amount of current that is feed into the LEDs, the lower the value the more current gets feed into the display board. At the default 2k/2.2k resistance, the lm7805 voltage regulator gets quite warm. I do not recommend swapping a lower resistance for R12, however if you must swap then, never let the R12 fall below 100 ohms.
Datalogging FAQ:
Where do I tap the RPM signal from?
I recommend that you tap the line between your ecu and ignitor, on your ecu harness. Other places might work as long as the signal is 0-5 volts frequency dependent square wave. It does not matter which cylinders signal you tap.
RPM Conv, what is the right setting for my particular engine?
I do not know what exactly is the proper setting for each engine configuration, it depends on how many ignition pulse there are for each engine revolution for the wire you tap into. A 4 cylinder engine with a distributor will have 2 ignition pulses per revolution, a setting of "30" will work for that engine. A 4 cylinder engine with wasted spark ignition will have 1 ignition pulse every engine revolution, a "60" will work for that engine. Just experiment with the different values until you get something that matches your tachometer, mostly likely the correct value is an integer multiple of 15.
Other FAQ:
Can I make the analog outputs the same profile as PLX, Innovate, etc...?
Some wideband readers have a built in voltage offset of about 1 volts positive on its analog outputs, so if you set 1 volts output the actual output is shifted upwards to about 2 volts. JAW does not have this voltage offset, so an entry of 1 volts means the actual output is 1 volts with respect to the ground signal that JAW is hooked up to. To make JAW so that its analog output behaves like other wideband readers, add the offset voltage to each voltage entry. I am not sure exactly what the offset voltage for each brand of readers are, I suspect that they are about 0.7 volts.
Where can I find sensor and cable parts in [insert country here]?
The VW part numbers listed on this site should be universal, you should be able to find the correct parts anywhere that sells VW parts using the same part numbers listed on this site.
