Before starting this kit, prepare the following tools:
● Soldering iron (15-20W)
● Multi-meter
● Flush cutters
● n2. hex screwdriver or allen key (enclosed with kit)
● Phillips screwdriver
● Wrench No. 8
● Protective eyewear
After the Tromsø is built it should be calibrated. You can use your mobile device with installed tuner
application for this purpose. For details see the Calibration part below.
We suggest that you work in a clean and a well lit and ventilated environment to avoid accidents or
losing any of the small components.
Also briefly go through this guide and make sure that you understand all the steps.
BOTTOM BOARD
You will start with the bottom board PCB. Before you will start soldering, take your time and find all the
resistors values using a multimeter (or you can check the color codes if you are seasoned enough):
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-470R (1x), 1k (4x), 10k (3x), 15k (1x), 30k (1x), 33k (1x), 100k (8x), 150k (1x), 220k (1x).
Be careful to insert these resistors on the right place and solder them. Then snip the leads close to the
PCB (be sure to make this step on all remaining leads in the course of this guide).
After that solder the diodes. There are four of them (2x 1N4148, 2x 1N4007). Be careful, diodes are
polarized! Make sure that the marking ring on the diode body matches the marking on the circuit board.
2 https://learn.sparkfun.com/tutorials/how-to-use-a-multimeter/measuring-resistance
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