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Unable to get SG90 Servo Motor working
I got sg90 servo motor from Ebay. I googled for few code and tried to run the servo. But unable to see the rotation. Instead small tick tick sound can be heard. Any issues in this...
Monday, 16 January 2017 - 16:52
Interrupt based USART transmission and reception
I have written interrupt based transmission and reception code. If RX_MAX_SIZE is increased to say 25, there is no issue. But if I run the code written in main(), with RX_MAX_SIZE...
Friday, 28 October 2016 - 12:32
Split from: Data type sizes
What is the default data type in AVR GCC? I mean is if I need one byte unsigned value and memory is not a constraint, uint16_t is better or uint8_t is better? Any performance...
Monday, 3 October 2016 - 14:33
Having trouble with TOV Flag
I have written code for JHD162A LCD interface using MCP23017 IO Expander in atmega328. LCD works fine with this code. But if I call any LCD related functions inside while(1)code...
Friday, 23 September 2016 - 16:01
Operating AVR as I2C Slave
I am planning to make one of the AVR processor as a slave and one of them as master in my project. From master processor, I should be able to operate I/Os of other slave using I2C...
Sunday, 4 September 2016 - 18:56
Input Impedance of Digital I/Os in Atmega328P
I was trying to see what is the input impedance of PORTD/PORTB in Atmega328P. I could not find this in datasheet. I found Analog Input Resistance RAIN=10M but nothing...
Monday, 22 August 2016 - 07:14
Undefined reference to __eeupd_byte_m328p and __eerd_byte_m328p
When I copied entire CodeBlocks project to my machine to my friend's machine, he started getting the below error message in CL_EEPROM.c. I am using latest avr8-gnu-toolchain ...
Monday, 1 August 2016 - 14:14
Comparing unsigned long - WinAVR
I have issue in comparing unsigned long value. I was trying to work with arduino library for IR sensor (https://github.com/z3t0/Arduino-IRremote). I integrated the library with my...
Friday, 29 July 2016 - 15:33
Issues in Returning Floating point value
Attached is the project in Codeblocks with WinAVR for HCSR04. I am having strange issue. In main() I was calling HCSR04Test(). But the result was absurd. So I posted the...
Thursday, 28 July 2016 - 16:17
Linker Error in Code::Blocks+WinAVR
I have problem with linking when I use code::Blocks. Attached is the complete project (Project files in CB and Atmel Studio). I am trying to use minimum arduino files for arduino...
Tuesday, 26 July 2016 - 02:33
Keyboard activation without Key press
I am having one strange issue. May be some silly mistake!! In the attached schematic, I have connected 4x4 keypad to JP12 (leaving VCC Pin) in Page 3 of the schematic. So one of...
Saturday, 23 July 2016 - 16:04
TSOP4838 Library in C
I am looking for a simple library for TSOP4338 decoding. I am not worried about any manufacturer protocol.  I just need to control my Atmega328 based system using TV remote....
Wednesday, 13 July 2016 - 16:05

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