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SOLDERING
RESISTORS
Start the soldering with the resistors. There are just three values of them: 1k (11x), 100k (7x) and
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220k (2x). Before you start soldering, check the values by
using a multimeter
or you can check the
color codes - the 100k's have the orange stripe. Then snip the leads close to the PCB (be sure to
make this step on all remaining leads in the course of this guide) and set aside a few of them. You
will use them later.
DIODES
Solder also the Zener diodes (10x) - be careful, diodes are polarized! Make sure that the black
stripe on the diode matches the stripe on the PCB. See the photos below for all these steps.
USB CONNECTOR
Move to the USB connector now. Place it from the top and solder from the same side. There are two
legs on both sides that has to be soldered along with those on the back except the three in the centre
(see the photo). Start with just one side leg so you can make the adjustments by re-heating. The
connector should be flat right on the board.
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https://learn.sparkfun.com/tutorials/how-to-use-a-multimeter/measuring-resistance
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