Table of Contents
Advertisement
ITS1A CLOCK
Start by soldering D1, Then D2-D13 as shown in the picture below. Use some tape to hold them all in
place while you do it. Note that the diode direction alternates as in the picture below. It is important
you get this right!
Follow up with D14-D17 (again, note that the polarity alternates), and finally D18.
That is all the regular diodes!
Resistors
Solder in all the marked resistors: R1-R18. Note that R2 is bigger than the others – bend the leads close
to the body. Also note that there are two sets of resistors marked R1-R4. The ones that are all the same
value are for the display board, not this board – those will have LED written on the paper strip.
Zener Diodes
Solder in the Zener diodes. Z1-Z5 Again, pay attention to the polarity. There are a mix of Zener voltages,
so make sure you solder the right ones. All of the Zener diodes have paper tabs attached to the leads.
The loose diodes are regular diodes that you should have already soldered in.
M1
Solder in M1. Check the polarity: The pin 1 marker should be near the L1 footprint as in this picture:
6
Advertisement
Table of Contents
