i'm very very new in here. i just created my account to ask this question. i'm willing to make a quadcopter multi rotor heli and i decided to make its control circuit by myself. i saw several schematics on the internet and i applied one of them.
here i followed this schematic to construct an atmega328 based arduino pro mini.
However , i dont have a "USB to serial breakout board" and i also made it by myself with max232 integer. Here its schematics
However when i try to burn arduino pro mini 5v 16mhz bootloader with arduino software. The red led on my avr programmer lights for 10-15 secs and after that it gives me this error.
Furthermore , when i try to upload multiwii_2_0 sketch over my rs232 TTL converter circuit. it gives me this error.
Well, if there is not BL on the Mini, and I assume there is not and that's why you are trying to burn a new one, then you will not be able to load a sketch onto it using the BL (through the on board UART).
So, getting your USBasp working would be the first step. Have you tried it though a different USB port, or on a different PC?
If there is a BL on it, the the error you are getting trying load a sketch might because you are not resetting the Mini at the right time.
My usbasp is giving me the same error, apparently a wrong firmware from what I've found, except that with my usbasp you can upload a new firmware because of lack of isp
Im trying to get the ide to work with it because avrdude is greek to me
i dont know how but it just worked.. i just figured out i forgot to connect 22nd pin to Ground and i changed reset circuit from pull up to pull down. it works now. i also connected my gyro and acc sensors. they both worked
Well, ground is critical. But pull down on the reset is a new one. The Pro Mini already has a 10K pull-up on board, or is this something you made yourself?
I find using something like this to be the best way to program a Mini or Pro Mini:
