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Step 5PIC placement
Now comes the moment of truth - soldering the PIC in place. Note that the pin 1 dot is now at the lower right of the picture!!!
The three unbent pins on the left side will individually connect to the three JTAG pads in a row that you applied solder to earlier. The two pins on the right side will both connect to the standalone JTAG pad - actually, only pin 3 needs to be connected, but there isn't anything better to do with pin 2, and it shouldn't be left floating. The PIC will line up with all these pads a bit better if tilted slightly to the left, as shown.
You should not need to apply any more solder in this step. The idea is to hold the PIC in place with tweezers, and apply a slight downward pressure while heating the pins on one side. As soon as the existing solder melts, remove the iron, but keep holding the PIC motionless with the tweezers until the solder resolidifies. Repeat with the other side.
Check your work again with the magnifier. There shouldn't be any solder bridges, except for the intentional one between pins 2 and 3. There shouldn't be anything touching any part of the circuit board that you weren't instructed to apply solder to. There should be three PIC pins that are completely unconnected at this point.
The three unbent pins on the left side will individually connect to the three JTAG pads in a row that you applied solder to earlier. The two pins on the right side will both connect to the standalone JTAG pad - actually, only pin 3 needs to be connected, but there isn't anything better to do with pin 2, and it shouldn't be left floating. The PIC will line up with all these pads a bit better if tilted slightly to the left, as shown.
You should not need to apply any more solder in this step. The idea is to hold the PIC in place with tweezers, and apply a slight downward pressure while heating the pins on one side. As soon as the existing solder melts, remove the iron, but keep holding the PIC motionless with the tweezers until the solder resolidifies. Repeat with the other side.
Check your work again with the magnifier. There shouldn't be any solder bridges, except for the intentional one between pins 2 and 3. There shouldn't be anything touching any part of the circuit board that you weren't instructed to apply solder to. There should be three PIC pins that are completely unconnected at this point.
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