Hey all. Just bought an Arduino Mini Pro and a USB to RS232 TTL PL2303HX Auto Converter Module (image attached). As far as my pre-buy research goes, the converter module should allow me to connect to the Mini Pro. Just cant seem to get it right. Everything I've found so far indicates that the following wire configuration is the way to go:
GND -> GND
5V -> VCC
RX -> TX
TX -> RX
PL2303-driver installed properly and USB-connection shows up fine when the module is plugged in. Tried with most of the boards in the IDE. Just can't connect in any way.
Looking at your image a 2nd time, you do have the proper board (TTL), however, it does not have a RTS pin for the reset.
You will have to manually press reset when you upload your sketch.
So, are you able to use this converter now? I own a similar one, and only succeeded at programming once or twice, not to mention several bluescreens caused by the driver. Fortunately I have two different ones based on Silicon Labs chips which work well.
No, I just figured I had the wrong module. I've ordered the cable from Adafruit. I've seen videos and stuff with other people pulling some sort of timed move when they upload their sketch. You have to hit reset in just the right moment. I don't wanna go into that.
I see. I need to push reset using the Silicon Labs CP210x module and I'm fine with it - it works reliably, but pushing reset on the Prolific module doesn't seem to help at all. So it seems it's better to steer away of these modules (although they work OK in loopback and for other serial communication, which is strange).
