Mike Cook said...
OK, deleting (cutting destroying the 10K between the USB2SER (RES)·
to PIN 38 Propeller SDA)·
as shown on the the propeller schematic posted here:
SDA & SCL are now pulled up to +3.3 via a 4.7K resistor on each line.
So what I gather form this conversation is that there is an ERROR in the original schematic as posted here:
and in the April 2006 Nuts & Volts Atricle. The RES from the USB2SER should only go to PIN 11 of the propeller chip (RESn)·
and NOT be connected via a 10K series resistor to pin 38 (Propeller SDA) for stand alone operation. Is there any harm in in including it?. Is it needed for programming the Propeller via the IDE?