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- #Aldl commodore software library serial#
- #Aldl commodore software library Pc#
- #Aldl commodore software library professional#
Collector voltage will be close to 12 Volts less the voltage drop across the LED and the transistor's Vces. When the ALDL signal is close to 0 Volts the transistor will be saturated and drawing its maximum collector current. The DTR pin is set by the software to a negative RS232 level so that the level read on CTS (pin 8 of 9) will also be negative. When the ALDL signal is close to 12 Volts (the dash Check Engine Light will be OFF) the transistor will be turned off and its collector will be close to the (negative) DTR level (from pin 4 of 9). The LED is used as an indicator of the 160 baud data stream and also to ensure the transistor is cut off when the ALDL data is HI.
#Aldl commodore software library serial#
The transistor (a general purpose PNP transistor, like the BC557 or 2N2907) is used as a level converter for the 0 to 12 Volt levels from the 160 baud ALDL data stream to the RS232 levels expected by the serial port. A schematic and also a component and solder side view of the prototype are shown here. The design uses one transistor, 5 resistors and an LED for diagnostic display purposes.
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#Aldl commodore software library Pc#
Because RS232 cables can be quite long, and can pick up electrical noise easily, the serial port was chosen as the PC interface. ALDL 160 baud Hardware I describe here one of the simplest 160 baud ALDL interface that connects to a PC's serial port.
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It uses a minimum of (readily available) components consistent with good electronics design. The hardware is designed to be able to be constructed by the average hobbyist who has a temperature controlled soldering iron and basic skills in constructing simple electronics. This interface allows the vehicle's ALDL data stream to be displayed in real time on a PC using simple software. US and other vehicles that use an ALDL data stream that switches between 0 and 5 Volts requires a that can also be used for. Note: This description is for Australian VN and VP vehicles where the CEL (also known as SES or Service Engine Soon) light is connected between 12 Volts and the ALDL data stream from the ECU (1227808 pin A5). I also have newer information on which uses the Rx data line rather than the CTS line, as describd here. Additionally, simple to display the captured information, and details of a simple are presented.
#Aldl commodore software library professional#
This tutorial will show how quickly and easy it is to get setup and start logging live data from your Holden commodore within a matter of minutes from plugging in your ALDL cable from us! It is suitable for Holden commodores that communicate over ALDL, this includes: VS (V6/V8) VR (V6/V8) VT (V6 and 5L V8) VX (V6) VY (V6) Our ALDL cables can be purchased from: Please comment below if you have any questions! *Ignore below HOLDEN COMMODORE HSV VR VS VT VX VY VZ VE VF LIVE ENGINE DATA READING DIAGNOSTICS SRS ABS CLEAR ENGINE LIGHT READ ENGINE FAULT CODES TUNERPRO EFILIVE V4 EVALUATION TUTORIAL DEMO PROFESSIONAL TUNING.ġ60 Baud ALDL Hardware Interface 160 Baud ALDL Hardware Interface A simple hardware interface between GM's and a PC's serial port is described here. TunerPro V5 is a diagnostic software which can read live engine data and fault codes from Holden commodores. This tutorial will show how quickly and easy it is to get setup and start logging live data from your Holden commodore within a matter of minutes from plugging in your ALDL cable from us! Aldl Commodore Software Library 3,7/5 8749 votesĮfilive is a diagnostic software which can read live engine data and fault codes from Holden commodores.