In SX Microcontrollers, SX/B Compiler and SX-Key Tool, sylvie369 wrote:

I just tried it again with the pullup resistor, and also with that resistor plus the capacitor - still the same error, and no change if I send +5v to RTCC (Pin 1). 

I also traded out SX chips in case I'd fried the first one,  but that also did not make a difference. 

I also think that the SX-Key was getting hot just from being plugged into the USB port. I've disconnected it and let it cool down, and just reconnected it with no circuitry attached. Sure enough, it gets hot without being plugged into anything other than the USB port. Surely that's not normal? 

Let's give it one more shot here to cool down, and then try that again. Okay, yup, it definitely gets hot from just being plugged into the USB port. The heat is coming from the object marked "220", which I assume is the voltage regulator. It's heating up inside of a minute, with no attempt to program or anything like that. 

Whaddya all think?

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