Serial cable for WP-34S : few questions

[Marcus von Cube]

(02-08-2015 04:49 PM)Francois Lanciault Wrote:  I know the ERASE button should short the +3V pad and the erase pad. What about the reset button? For what I could deduced it needs to short the reset pad with the ground pad. Can someone confirm ?

I can confirm.

(02-08-2015 04:49 PM)Francois Lanciault Wrote:  The Tx pad means Tx at calculator level and should be connected to the Rx pin of the host computer. True ?

Same for the Rx pad on the calculator; should be connected to the Tx pin on the computer ?

Also confirmed! Be aware that the voltage level is 0-3V, not RSR232 level! The latter can kill your calculator. An FTDI USB converter chip will do nicely.