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Convert a NES gamepad to USB with Arduino

Step 9Construction: Crystal time

Construction: Crystal time
The crystal is going to be sitting sideways, to make life a little easier you may want to "smoosh" the leads down so they line up with the atmega's pins easier, Also I put the board back in its front shell, there is a post right where the crystal goes, so you have a choice, you can work around it, or cut the post off

I choose to work around it (thinking its more protection for the crystal if this gets stepped on)

Solder 1 leg of the crystal to pin 9 of the atmega, bend the other leg to pin 10 of the mega, now we can add the 22pf caps, they are necessary for operation

The first capacitor is pretty, easy, stick one lead into that leftover ic hole (pad# 8) and solder to the pcb, solder the other lead to the closest lead of the crystal

The other capacitor is a little bit of a pain in the butt, because of a second plastic post, you can cut this post off too if you wish, but I worked around it, One lead of that capacitor needs to be soldered to the second lead of the crystal, and the second lead of the capacitor needs to be soldered to pin #8 of the atmega (this is a ground pin)
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Author:osgeld