Hello i try to program my uno board but i keep getting this error.
Binary sketch size: 1,084 bytes (of a 32,256 byte maximum)
avrdude: verification error, first mismatch at byte 0x0000
0x0c != 0x62
avrdude: verification error; content mismatch
so i thought i try out my mega i still get the same error then i tried my mini pro and same error. but when i went into my device manger to see if the com was there for any of them instead of it saying arduino com 4 or 5 it says USB-SERIAL CH340 (COM4) not sure what happen i try to delete it and reinstall it even reinstalled the arduino software and still same problem can someone please help me out?
That means the IDE has sent all the code to the bootloader and it has programmed it in. Then when it comes to reading it back it finds that the byte it should have been is not the byte it finds.
Make sure you have chosen the correct board from the tools menu.
hello grumpy yes i have selected the correct board and com same thing no matter what board i use. but doesn't explain how it went from saying arduino in the device manger where the com is to it says USB-SERIAL CH340 (COM4) and its the same com number as well?
but doesn't explain how it went from saying arduino in the device manger where the com is to it says USB-SERIAL CH340 (COM4)
True it doesn't explain that, but as that is not the cause of your problem I wouldn't worry about it. It is a function of your computer.
well it is something with my pc as of last night everything was working create i also today installed the arduino software on a old laptop i had just see if it will load anything and all board work fine on the laptop i can install all sketches with no problem on my uno, mega, and pro mini so that is okay. which is okay i use the old laptop no problem just got to figure out what is wrong and why this happen it haves to be something with the usb drivers in windows. i'll look more into it over time but at least i can get back to working on my currently project.
but thank you grumpy for the reply and help i'll keep update in this post on what happens and what I'm doing to try to fix this.