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The Arduino Uno is the most common of the Arduino boards. It is based on the ATmega328P microcontroller.

2 votes
1 answer
9k views

How many UNO pins have internal pull up resistors?

I am referring to all digital I/O pins 0 to 13 and A0 to A5.
Abdalrahman Seliem's user avatar
2 votes
2 answers
672 views

UNO's Internal EEPROM "read" returns incorrect values when it precedes "write"

I am an Arduino instructor and I was preparing some material on the utilization of the Arduino UNO's internal EEPROM when I encountered a problem. The problem is, I am trying to show the original valu …
Abdalrahman Seliem's user avatar
3 votes
Accepted

UNO's Internal EEPROM "read" returns incorrect values when it precedes "write"

This is NOT my answer, this is the answer of @Gerben, thank you. The Arduino IDE suspends the serial connection while uploading, and then resumes when done. It looks like they added some delay before …
Abdalrahman Seliem's user avatar
0 votes

My program is using too much memory

What I want to know is, if it is possible to add a Arduino SD card module and keep portion of my string memory in there Well, given that two contributors have already gave a handful of advices to both …
Abdalrahman Seliem's user avatar
1 vote
1 answer
1k views

Programming ATtiny85 with Arduino-IDE and an 8MHz external oscillator

I have a digispark ATtiny85 development board and I am using the Arduino IDE to program it along with the Arduino UNO as my hardware programmer. I have successfully burned the fuses for both the inter …
Abdalrahman Seliem's user avatar