Thread: What is the best street based GPS

We have recently got the Navman N40i and that seems to work well. Depends what you want, we did not want bluetooth, hard drive, i pod connection etc so the N40i was the go. The Tom Tom is also a good unit.
We have the laptop with track ranger, nat maps and ubd for the 4x4 and the N40i for the Statesman for city driving, not bad in country areas either but not totally accurate.

Originally Posted by dobbo

Unless you rip apart an old pc and get the good bits out of the powerbox




The car battery is a 12 V one, but the CD-ROM drive needs two voltages to work: 12 V and 5 V. The 7805 circuit is able to convert a 12 V voltage into 5 V (its pin 1 is for the input, its pin 2 is the grounding, and its pin 3 is the 5 V exit). Figure 1 shows the plan for the connection. The grounding pin should be connected to the wires of the plug grounding and the negative pole of the car battery, what is done by simply connecting that pin to the metallic body of the car.

taken from
http://www.hardwaresecrets.com/article/71

Tis cool trick for tightarses

actually while this would work - the power supply should be regulated, it's safer and more robust...