WiiChuck Kit Instructions
Page 3 of 6
Diodes
There are 6 diodes. They are the same type (BAT85). The diodes are red and black glass tubes. When inserted into
the PCB, the black side of the diode must line up with the stripe on the part outline on the PCB. The diode leads need
to be bent close to the body of the diode. Hold the diode body and press down on each lead right at the body to make
a U shape.
Chip Sockets
There is one 8-pin socket and three 14-pin sockets. Sockets are marked with a small notch that must line up with the
outline on the PCB. Once the socket is soldered in place, the PCB outline will not be visible, so it is important that the
sockets are oriented correctly in order to ensure that the chips are inserted into the sockets correctly.
Note that two of the 14-pin sockets go right next to each other to accommodate the 28-pin U1.
Ceramic Capacitors
Ceramic capacitors are small tan or blue blobs. Their value is marked on them with a three-digit code. The marking is
rather tiny, so you may have to use a magnifying glass to read them. It does not matter which lead goes in which
PCB hole.
We recommend that you start with the 1 uF capacitor, because there is only one of them. The rest are all 0.1 uF.
Value
Marking
Quantity
Refdes
0.1 uF
104
5
C4, C5, C6, C7, C8
1 uF
105
1
C3
Electrolytic Capacitors
Electrolytic capacitors look like a little tin can. There are two of them, and they are both the same value.
Electrolytic capacitors are polarized, so which lead goes in which hole is important. The negative lead on the
capacitor is the shorter one and it is indicated by gray stripe on the capacitor body. The positive lead is longer. The
positive hole on the PCB has a square pad and is marked with a plus sign.
