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Old 01-17-2011, 03:51 PM   #14 (permalink)
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My 4D systems display turned up today. word of advice. Buy the usb programmer! Had an epic struggle to get the device working on rs232. The culprit is the reset line. For programming it must be pulled low briefly. I eventually found a little obscure circuit on the 4d forums and modified it slightly to avoid using the max232 for the the reset signal. A 1N4001 diode works fine as shown. Now i can get on with programming the thing
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Now, Cole, when you shift the gear and that little needle on the ammeter goes into the red and reads 2000 Amps, that's bad.
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