Go Down

Topic: first pcb try (Read 9 times) previous topic - next topic

CrossRoads

Nice job pwillard. That's way more than I am willing to do with that toy.

Carlcox89, are you planning to use the Analog pins? If so, you should disconnect pins 20 & 21, and connect 20 to a capacitor to Gnd.
The connection to 5V will be made internally if used, or you could use the internal 1.1V reference.
If the pin is hardwired to +5, you lose that option.
Designing & building electrical circuits for over 25 years. Check out the ATMega1284P based Bobuino and other '328P & '1284P creations & offerings at  www.crossroadsfencing.com/BobuinoRev17.
Arduino for Teens available at Amazon.com.

Carlcox89

Many thanks pwillard for taking your hours ;)
It'll really help me understand what i did right and wrong.

@CrossRoads , i dont intend to use analog pins now, but maybe i need to use them in the future.
So i would have to break the 20&21 pins connection, and connect a capacitor (how much uf ?) to pin 20 (AVCC) to ground ?
thanks

CrossRoads

Yes on Aref. 0.1uF to Gnd, no other connection.
Designing & building electrical circuits for over 25 years. Check out the ATMega1284P based Bobuino and other '328P & '1284P creations & offerings at  www.crossroadsfencing.com/BobuinoRev17.
Arduino for Teens available at Amazon.com.

Carlcox89


Yes on Aref. 0.1uF to Gnd, no other connection.

Aref ?
you said "connect 20 to a capacitor to Gnd."
pin 20 is AVCC :o
AREF is 21
So which one should i connect with a capacitor to GND?

SirNickity


Go Up