source= http://www.piclist.com/postbot.asp?id=piclist\2002\11\02\164354a Brad Woods said "So I got my SXKey in the mail two days ago, rigged my breadboard, got some sample code to assemble properly. But no matter what I do SXKey always produces the error "Programming Failed", two days and no progress. " Parallax support would be a better place to ask, but here is a quick checklist, just in case it helps: - is there actually 5v at the SX Vcc and is that connected to the SXKey Vcc connection? - is the Ground connected (SX and Key) and reading 0v with respect to ground? - are OSC1 and 2 connected correctly? I had them swapped for a good long time one day. - is NOTHING else connected to OSC1 and 2? No resonator or crystal or RC.... nothing. - are the OSC1 and 2 leads short? i.e. less than an inch? - is the chip hot? Check all the other pins and then replace the chip. - is the SXKey hot? After checking all that, try another SX chip, then call Parallax on the phone (they give really good support). --- James Newton, Host of SXList.com james@sxlist.com 1-619-652-0593 fax:1-208-279-8767 SX FAQ / Code / Tutorials / Documentation: http://www.sxlist.com Pick faster! -- http://www.piclist.com hint: To leave the PICList mailto:piclist-unsubscribe-request@mitvma.mit.edu