While the PL2303 is open, also check to make sure the black wire is soldered just lift the pin four with a scaple and soldering iron and tie Also, if you happen to get a PL2303 that has pin 4 tied to 5v, not Most of these units will open up (as in my pic) if you're veryĬareful. When you plug it in to GPIO15! Always make sure (by looking) that the pinįour(4) of the PL2303 is connected to 3v3, and also measure pin 4 carefully Is connected to 5v then the Txd line will work at 5v!- and destroy your PI ![]() ![]() Pin four is a voltage referenc ifĬonnected to 3v3 the Txd pin will work at 3v3 - otherwise if the reference Notice also on pin four (4) the lan pattern In the pic above you can see that I have moved the red line from theĥv pwr output to the 3v3 pwr output. ![]() PL2303 usb to TTL serial adapter jpg pl2303.jpg (28.85 KiB) Viewed 10824 times
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