I wrote this title to be ambiguous. I’ve been busy with personal things so slow progress on writing. I’ve just started back up on the Arduino Nano Every (ATMega4809) book. The needs of the Arduino people to have this board as compatible as possible with the older Arduino Nano has made this a surprisingly difficult …
There is a transposed const and * in the section Using the EEPROM. The code snippet should read: struct MYEEPROM { byte aByte; word aWord; word aSecondWord; } * const eeprom = (struct MYEEPROM *)0;
The ATmega4809 microcontroller used in the Arduino Nano Every differs from the other AVR microcontrollers in other Arduino boards in that all memories can be addressed as part of the data space. This “cheat” means it no longer behaves like a Harvard architecture which simplifies coding. Literal strings and variables declared as const are now …
The ATmega4809 microcontroller in the Arduino Nano Every is no longer loaded via a bootloader program, but instead uses a single wire programming interface, Unified Program and Debug Interface, or UPDI. This also has debugging capability, but this is not available with the Arduino IDE. The ISCP interface (and its 6-pin header) is no longer …
Using the Arduino Library, a pin (here digital pin 13) can be pulsed at maximum rate with: void setup() { pinMode(13, OUTPUT); } void loop() { digitalWrite(13, HIGH); digitalWrite(13, LOW); } On a Nano, the pulse width is 3.2µs with a period of 6.7µs. On the Nano Every, the pulse width is …
I just received two Arduino Nano Every boards with the ATmega4809 microcontroller. Here are my first observations studying the boards. Next post I will show how I am handling the digital I/O pins and will talk about the compatibility layer that (attempts to) makes the Nano Every behave like a Nano. The Arduino Nano Every …
Far Inside The Arduino is aimed at users of ATmega328P and ATmega2560 microcontrollers. These include the Arduino Uno, Nano, and Mega boards. Some Arduino boards feature other AVR microcontrollers, particularly the ATmega32U4 and the ATmega4809. The ATmega32U4 is found in the Leonardo, Micro, Yun and some other boards. This chip has a build-in USB controller …
SEO! It used to be all you needed was a cleanly laid out website to get good placement in Google Search. No more. Now the site needs to be tailored for what Google wants to see. Gotta use HTTPS. Even if there is no reason to have a secure connection, and there certainly is no …
Illustrations in my recent books use a font that I purchased years ago for my teaching, Museo and Museo Sans. Back then I wanted something that would look distinctive and eye-catching (yes, I wanted students to read the handout) while being readable and easy on the eyes. The rounded elements really stand out. When it …
Actually, my desk is very long, but here is the portion of it I’m usually facing: I’ve got a 27″ iMac with a second display, a 27″ 4K LG that I keep my calendar and OmniFocus (planner) windows on when I don’t need the extra screen space. The keyboard is a 1989 Northgate OmniKey/102 which …