jjedlins

Hello, ADC12 Lesson learnt. After doing some checks I realized that I damaged analog input while attaching +5V. Max voltage that ADC12 accepts is 3,3V. There is some threshold above which ESD protection diodes start conducting. Of course current which ESD protection can handle is less than +5V pin on the launchpad can provide...I guess close to 500mA. Thus these diodes got broken...Fortunately I have couple more Ax's to use ;-) Thanks, Jacek

Hello, I started playing with MSP430USB launchpad a few weeks ago. After couple of rather simple exercises like LCD display and 1-wire bus which worked really nice, I decided to play with ADC12. I was surprised to see that when I was connecting +5V or +3.3V to ANALOG1 input (P6.0) my launchpad was disconnecting from my PC and LCD light was going off. The same was happening when I used other analog inputs. When I connected 4,5V battery between Analog1 and GND it was draining really huge current from the battery. Battery ran out flat after a few minutes. Even thought apparently all Aanlog in

Hello 43oh forum members. I am Jacek from Poland.