On Tuesday 21 February 2006 18:08, Jonathan McDowell wrote: [...]
* If you just wire it up, it may work, but you run some risk of frying the UART in the E3.
True; I have mine wired up at present with no converter or level shifter.
Hmm. [...]
* You can wire it up to an E2 line level converter and it will work.
True if taken together I believe; you need an E2 style converter plus an inverter.
If I were to wire it up to an E2 converter *backwards* --- so that logic 0 was -5V and logic 1 was 0V --- would the tolerances in the E3's UART and the converter's own chip make it work? After all, if the E3 can cope with +/- 25V for RS232, it ought to be tough enough to manage -5V... -- +- David Given --McQ-+ "A psychic? That sounds like science fiction." | dg@cowlark.com | "Dear, you live on a spaceship." | (dg@tao-group.com) | "So?" +- www.cowlark.com --+ --- Firefly, _Objects in Space_