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485 communication with two atmega8
Hello guyz, I need help with a project, I have two AVRs some 500+ meters apart and I have to develop communication between them, one of them is the sender and the other one is...
Thursday, 24 October 2019 - 08:00
connection of 4 7 segment with colon
Hello I have this set of 7 segment (picture attached) previously I had a similar segment but the only difference was that this one has a colon between the 2nd and 3rd digit...
Wednesday, 31 July 2019 - 07:32
an efficient way to find out the duration of a function or ISR routine
Lets say I want to calculate the actual time taken by my MCU to run 1 of my function or ISR routine. What would be the best approach to find the actual time? provided oscilloscope...
Friday, 19 July 2019 - 05:20
atmega128A and atmega128
I looked into the data sheet of Atmega 128 and atmega 128a  I am using atmega128a and I didnt know untill now that it is a little different from (atmega 128) I was using...
Friday, 12 July 2019 - 11:03
Avr mkll programmer busy
I was working on a project and I was getting a head ache becuase my LED matrix's last line was showing garbage so i tried to see everything in slow motion . i was using shift...
Thursday, 11 July 2019 - 12:25
Pullup in HC05 with atmega
Hi, i am using atmega128 with Bluetooth module HC05. I was having No trouble at all with the communication but reccently a new batch of bluetooth module arrived and with the same...
Wednesday, 8 May 2019 - 04:46
Understanding working of 2 interrupt routine
I have a question here please help me understand, lets say i am running 2 timer interrupts both are called after 2ms  and also i am running a  third timer to measure...
Thursday, 2 May 2019 - 12:22
removing AVR MKii programmer results in display of garbage values
I am using atmega128 with avr mkii programmer i have connected 4 shift registers in daisy chain and an ESP8266. ESP8266 takes data from internet and displays on the segments...
Saturday, 27 April 2019 - 04:43
SOLVED:unusual behaviour of if statement
Hello! i noticed an unusual behaviour in my code earlier today i am receiving data and sending it back via bluetooth    ISR(USART1_RX_vect) { uint8_t temp_var =0;...
Friday, 19 April 2019 - 06:20
atmega 128 doesn't return from a function even if Extended.M103C fuse bit is disabled
 Hi I know i should n't be using atmega128 but it will take some time to replace besides there are 100's of PCB already in making. my problem is, if you look at the main()...
Thursday, 18 April 2019 - 05:36
interfacing multiple shift registers with atmega128
Hello , I am using Atmega128 and 8 shift registers 6D595 the ser_out of each register is connected to the next shift register's ser_in so they form a chain. There is no issue with...
Monday, 15 April 2019 - 07:39
Interfacing ESP8266 with atmega8
I am using ESP8266 i have configured my ESP i am sending the following AT commands from serial port of atmega8 <code>AT+CWMODE=3   // station + AP mode AT+CIPMUX=0...
Tuesday, 9 April 2019 - 12:16