I have 3 little question before i start this project (i want to be shure not to screw up anything):
1 - I think there is an error on the picture (correct me if im wrong) i think it supposed to be GRND instead of -5v, or does this 'device' need 10v to work
2 - Also, do u think its ok to take the +5v power from a usb port?
3 - I checked at www.abra-electronics.com to see if they have those max232 chip (this store is at 10min from my home) and it gave me 5 results:
MAX232ACPE ---- +5V HighSpeed dual RS232 T/R 16 Pins
MAX232CPE ---- +5V dual RS232 trans/receiver 16 Pins
MAX232EPE ---- +5V dual RS232 trans/rcvr 40°C to +85°C 16 Pins
MAX232CWE* ---- 5V dual RS232 trans/rcvr 16 Pins
MAX233CPP ---- MAX232 no external components required 20 Pins
Can anyone tell me wich one is the best for this project??