Attiny45 pads are too close together (width-wise)
Our students noticed the pads for the Attiny45 are too close together widthwise which makes it very difficult to solder correctly (especially for a first timer). The pins sit exactly on the pads which allows for no lateral placement tolerance.
I think the pad pattern might have been copied from the Attiny44 and then truncated, but the 44 and 45 actually have different widths meaning:
- There is more pad underneath the 45 than needs to be, and,
- There is not enough pad on the outside of the pins to solder the join as per the canon techniques.