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SOLDERING GUIDE (PART A)
1.
Turn on the soldering iron to 360º F - 370º F (182º C - 188º C) using Tin-Lead 60/40 solder.
2.
Flip the board on its bottom side and then place the IC socket on the board where the white
rectangle marked U10 can be seen. Make sure the socket’s notch faces the correct direction
according to the schematic on the board.
Note:
It is suggested to use the IC socket since soldering the Microcontroller directly could
cause damage it.
3.
Insert the pins in the holes and begin the soldering process on the other side of the board.
A few pins will not get soldered since there are no attachment pads for those pins.
Note:
It is suggested to solder the IC socket first before any other piece or it will become
harder to solder it later if the LEDs are soldered first.
4.
After having soldered the IC socket, flip the board on its bottom side and place the four
resistors found in the kit according to the schematics named “R1 1K”, “R2 1K”, “R3 1K”
and “R4 1K” on the board (Refer to Appendix for a guide on reading resistor values).
Note:
Polarity is not an issue when placing the resistors on the board.
5.
Insert the resistor leads in the holes, bend them in order to hold the resistors in the preferred
position, flip the board and then, begin the soldering process for the resistors. Once
finished, cut the remaining part of the resistors’ lead.
6.
Now, flip the board on its bottom side and place the four non-rectangular LEDs each on
one of the four schematics found on the corners of the board, named “LED D1”, “LED
D2”, “LED D3” and “LED D4”.
7.
Once again, insert the leads in the holes, bend them to hold the LEDs in the desired position,
flip the board, and begin soldering the leads. Once done, cut the unused part of the LED
leads.
Note:
Before soldering the LEDs you can place over the Plastic Spacers to act as standoffs
for the LEDs. (Optional)
8.
Now, flip the board, place the crystal oscillator on the schematic named “11.0592”, insert
the leads in the holes, flip the board again and begin soldering on the top side of the board.
The remaining parts of the oscillator should be cut after soldering.
9.
To solder the first capacitor, flip the board to its bottom side, place the “470 µF” capacitor
on the circular schematic found roughly in the middle of the board and repeat the same
instructions as in step 8 for this capacitor (Refer to Appendix for an image).
Note:
Make sure you respect the polarity of the capacitor according to the schematic.
10.
Next up, solder the two orange ceramic capacitors on the markings (“C2” and “C3”) found
on either side of the oscillator, again on the bottom side of the board. Repeat the same
instructions as in step 8 for these capacitors.
11.
Finally, for the last piece to be placed on this side of the board, solder the female barrel
connector according to the previous steps after positioning it on the proper schematic which
can be found just next to the cylindrical capacitor. Do not cut the leads.
