2 - PCB Assembly

[Tony]

Speaker LS1, the + points to the top right:

[Tony]

The USB socket - it's fitted so the edge of the PCB sits between the 2 rows of pins, allowing them to be soldered to each side of the board. The 3-pin row is on the top side:





Solder the pins on both sides of the board and bridge the socket case to the board as shown - be careful the solder doesn't end up in the socket though.



Bridge these pads with solder or component wire offcuts:

[Tony]

Now the last component from bag1 for now - the 2200u electrlytic capacitor. It's polarised so make sure the white band faces right:

[Tony]

Bag 2 components next, starting with D5, the black band faces down:

[Tony]

Then the 2x IR LEDs, LD5 and LD6. The SHORT lead points to the TOP of the board for both LEDs:

[Tony]

The 2n7000 speaker driver, T2

[Tony]

The socket for IC4 - don't fit the IC yet though:

[Tony]

Last part on this side for now is the crystal X1:

[Tony]

Time for a few surface mount parts, starting with the RGB LEDs LD7,8 and 9. The marked corner faces bottom right for LD7 and top left for LD8 and 9:

[Tony]

The coil driver transistor T7. Solder the tab and the 2 outer legs, the centre leg isn't used as the connection is made via the soldered tab. You did solder it?.