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Differential ADC with same pin for positive and negative differential input
For differential ADC I am seeing both the positive and negative differential input as the same pin. For example on p. 283 of ATmega2560's datasheet in the first row of Table...
Monday, 2 December 2019 - 22:21
Compiling a program that uses double for the ATtiny4
Although I do not really plan on using double, I would like to understand why this is a problem.   #include <stdint.h> #include <avr/io.h> #include <util/...
Monday, 19 December 2016 - 14:59
Using avr-gcc to compile for ATtiny4
I am trying to compile code for ATtiny4 from the command line as follows.   /Applications/Arduino.app/Contents/Java/hardware/tools/avr/bin/avr-gcc -mmcu=attiny4 -Os -o ~/...
Monday, 12 December 2016 - 22:38
Solved: Transmitting using an ATtiny85 configured as a slave I2C
The following code is running on an ATtiny85 configured to transmit a byte as as a slave I2C. The problem is that it is always transmitting 1 no matter what is put into USIBR (and...
Tuesday, 11 October 2016 - 15:10
Max ADC value from atmega32U4
Hi,   The maximum ADC value that I can get from the atmega32u4 on a Yun is 1.25V. The voltage reference is AVCC and I am setting 1 << REFS0 in ADMUX. Thus I would...
Wednesday, 17 February 2016 - 14:06
Using the 16-bit timer on atmega328 to do PWM
Hi,   I am using timer 1 both to sample using OCR1A overflow interrupt and implement PWM on B2 using OCR1B. The result is a blinking LED and not a dimmed LED. I am doing...
Friday, 12 February 2016 - 14:36
Programming the atmega32u4 on an Arduino Yun
After programming the atmega32u4 on an Arduino Yun, the next attempt fails as the serial port becomes nonresponsive. The first attempt itself is fine and everything seems to be in...
Monday, 8 February 2016 - 20:30