Soldering Arduino Pro Mini's disaligned pins I have a couples of Arduino Pro Minis (original from sparkfun) that have those 4 disaligned pin. Unfortunetely, I need to use 2 of them, A4 and A5, because they are the I2C pins and I want to solder them onto a perf board.

Now, I really want to use headers and I do not want to solder any wire directly to it. I also do not want to add headers facing up on the board because I am trying to minimize space. Last, I am not willing to change Arduinos so please do not suggest me to use an Arduino Nano or Pro Micro.



So I would like to know if there is a way to connect those 2 pin to the perf board via headers or is there any alternative pins that I can use to connect and use the I2C interface.
That's indeed quite an problem. 

If you don't mind losing 2 analog pin, you could solder some jumper-wires between A4 and A2; and between A5 and A3. Then you could connect your I2C lines to pins A2 and A3.

But you have to be careful to never set pins A2 and A3 to OUTPUT in your software. If you want to be super-duper safe, you could cut the trace from the header pins going to the TQFP-chip. See the image below.