Hi @Richu-Bini, The Uart Baud Rate Register (UBRR) is used to set the clock for the UART shift registers and For standard crystal and resonator frequencies, the most commonly used baud rates for asynchronous operation can be generated by using the UBRR settings provided by the AVR Datasheet: AVR306: Using the AVR USART on tinyAVR and megaAVR devices

And you can find the equation from the datasheet to calculate the UBRR values depends on the clock source it has.

8422ea95-2844-483c-8e41-acab03c9ec41-image.png more details at the AVR306: Using the AVR USART on tinyAVR and
megaAVR devices

alt text src: http://www.avrbeginners.net/architecture/uart/uart.html#baud_generator

resource:

@Mennyt The general right angled header pins are the cheapest option. Something like this https://robu.in/product/2-54mm-2x20-right-angle-male-header-strip-pack-of-2/?gclid=CjwKCAiA4o79BRBvEiwAjteoYDcmnOSwTUviMZzRBeHz_aENF_fQgj3BrKXAzYs6GIHknHSOJ4_2KhoC1fAQAvD_BwE

@milanvarghese No, the battery comes into the play only if there is no power from the solar cell. It's like inverters in our home. They activate only if main power is gone, rest of the time they keep charging. similarly here the direct power will be coming from the solar cell, only if the solar cell can't produce enough voltage battery comes into the loop and starts providing voltage to our circuit.

@salmanfaris I am using Arduino UNO as ISP programmer.(General ISP connections are made). I used both Arduino IDE and also avrdude command line to burn the bootloader. I am sharing link to pictures and debug outputs I got on both avrdude and arduino here. Please check it and let me know if it rings any bells for you.

https://drive.google.com/drive/folders/1BP74HvmbBOlqBN4XDcvLkMt7eNK5hWaL?usp=sharing

@rosetoby Thanks for sharing, can you post your queries with details, code snippet ..etc

@rahuleapen Can you please share the connection diagram?

@bazil-nizam
Developing Android Applications with Eclipse is a bit old way. Few eclipse enthusiasts might be doing it still though. For your issue, check all the environment variables related to SDK and Emulators are correctly configured.

If you're a beginner and no specific reason to use Eclipse, try to start with AndroidStudio.