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Help Setting Up SPI On Atmega328p
It appears that the Ground lead is plugged into the AREF header socket receptor. 
Friday, 31 January 2020 - 15:15
China low cost debugger programmer JTAG ICE for Atmel NEW
This is an ANCIENT device that only works on a limited selection of obsolete AVR device numbers with a ten-year-old previous version of Atmel Studio.  Avoid buying it : avoid...
Thursday, 30 January 2020 - 21:35
why can't I use sei()??
It's possible that the compiler is simply not including any code for the timer interrupt since the ISR is completely empty.   Which begs a question: if the ISR does...
Thursday, 30 January 2020 - 21:29
Program flow stopping from some odd interrupts.
ISR(USART1_RX_vect){ while (!(UCSR1A & (1<<RXC1)));I noticed this along with the other people.   This while statement is what you would see in a TX routine...
Wednesday, 29 January 2020 - 21:54
Atmega644PA serial programming
Which bootloader?   Have you set the fuses on the 644PA for invoking the bootloader when reset is pressed?   Is it serial out from the PC, or serial out from...
Tuesday, 28 January 2020 - 23:01
This is a little confusing because it could be confused with a function pointer.  But it is a macro, because it starts with a #define.   So in the code, the left...
Sunday, 26 January 2020 - 17:24
Accurate 8-bit timer using 16MHz crystal
I recommend that if you are doing anything involving real-time to use a hardware solution.  For example this application, which requires the measurement of exactly one second...
Tuesday, 21 January 2020 - 19:23
ATMEGA328P serial communication displays special characters
Do you get the same results when using another and different PC terminal program besides RealTerm?   As I recall, Realterm has a strange user interface, and is likely in...
Monday, 20 January 2020 - 22:19
Rotary Encoder To Set Count on Four Seven Segment Digits
Start at CPU reset with all four LED digit digit displays off.  Set an uint8_t variable to 5.  Test the encoder.  With each activation, increase or decrease the...
Monday, 20 January 2020 - 22:13
Accurate 8-bit timer using 16MHz crystal
Do you get the same result when the MCU is not put into sleep mode?  
Monday, 20 January 2020 - 21:54
Help converting Arduino code for use in AtTiny10
Assuming that the ATtiny10 is using the 8MHz internal clock,  I would:   determine the pre-scaler of the timer to get 1500 microseconds (0.0015 sec) to be roughly mid-...
Monday, 20 January 2020 - 21:42
Help converting Arduino code for use in AtTiny10
Hello, You need to tell us the system clock speed of the ATtiny10, and the number of times per second that you are going to test the PWM signal, and whether your logic output is...
Monday, 20 January 2020 - 20:55