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no serial port on new laptop... cross-over cat-5 cable???
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Post no serial port on new laptop... cross-over cat-5 cable??? 
hey guys,

i just picked up a MJLJ V4... got the kit version... nice...............

i spoke to a computer person about not having a serial port on the laptop and that i didnt want to buy all these adapters just to connect the laptop and the MJLJ together. so he took a look at the kit and said that i should be able to use a "cat 5 crossover cable".

do you guys think this might work? or should i just use the adapters?

thanks

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Hello,

Actually, you do need a serial connection on the laptop- a network crossover cable will not work.

First, you will need to get a USB-Serial adapter for your laptop. Most any adapter will work, but we have a page here that lists some types that are known good:
http://www.autosportlabs.net/USB-serial_adapters

Next, you will need an RJ-11 to serial cable for the Megajolt- You can buy one here:
http://www.autosportlabs.com/rj11-serial-tuning-cable-mjlj-p-43.html

or knock up a custom cable using the instructions in the Operation guide, here:
http://www.autosportlabs.net/MJLJ_V4_Operation_Guide#Connecting_to_the_MJLJ

Once you have these bits you should be on your way!


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Brent Picasso
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I whipped up the handy RJ-11-to-serial adapter from the manual, and use a 3' serial-to-USB cable/adapter. That way, all that peeks out from behind the dash is the USB portion. Very convenient, and I never have to worry about losing the adapter.

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power here, ground there, 5-volts here, 5-volts there.... the l.e.d. lit up!!!!! everything went well and smoothly with the assembly... now its just the serial adapter to an rj11 (not a rj45). i will dig into my junk draw and see what i can find...

thank guys

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found a box of old computer stuff... dissected some cables, did a little bit of soldering... TAH-DAH!!! serial adapter!!!

i went out and purchased a usb to serial cable, had a few issues with the com ports, but all issues have been resolved...

i am loving this more and more....

thanks to all

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Most excellent! Keep us posted on your forward progress!


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Brent Picasso
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