Assembling the Fibonacci 32 Soldering Kit from Cyber City Circuits

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Earlier this spring, I received my May 2021 Cyber City Circuits soldering kit. Once again, the soldering kit was incredible. The kit is a Fibonacci 32 designed by Evil Genius Labs. In addition, the kit has an Arduino Nano powering 32 RGB lights in a fantastic little light show. This kit is also an excellent chance for those new to soldering to learn a new technique using a solderless breadboard.

The Fibonacci 32 Soldering Kit

The Fibonacci 32 Soldering Kit is shown below. There aren’t a lot of different kinds of components in this kit. But there are a lot of RBG LEDs to solder up. Below is a picture of the kit contents.

Contents of the Fibonacci 32 Soldering Kit

Evil Genius Labs provided an excellent tutorial for assembling the kit. The only thing I would add to the tutorial is that multiple LEDs can be prepared at once. The example shown has one LED being soldered to pin sets. I used a half-length solderless breadboard to speed up the process and filled the entire length with LEDs/pins. I left a gap of one row between each LED. Doing so allowed ten LED/pin sets to be soldered at a time.

Preparing ten LED/pin sets at a time.

When soldering the LEDs to the breadboard, I would test my work about every five LEDs. I followed the order listed in the tutorial. Luckily all of my solder joints were good, and the LEDs were all oriented correctly.

Printing a case

Cyber City Circuits does have a nice acrylic case available for the Fibonacci 32 Soldering Kit. I would recommend getting that for the kit. But I wanted to see how well Crystal PLA+ from GST3D would work as a diffuser. In Fusion360, I created a front and back cover to be used with this kit. I made the models available on

I printed the front cover with 100% infill using Crystal PLA+ from GST3D. Black PLA+ from IIIDMax was used for the back cover. The back cover does include two recessed areas for easier access to the buttons. If I had been thinking when designing the back cover, I would have left one screw hole off, where the USB port for the Arduino card is. Unfortunately, a standoff cannot be used there due to a lack of room.

To assemble the case, I used M3 x 10mm brass spacer standoffs. Usually, I would use nylon spacer standoffs. But I recently moved into a new shop, and I can’t seem to find my nylon spacer kit. Either type of spacer works fine, though.

The picture below shows the standoff configuration I used. The front cover was offset from the PCB using four female-female spacers. The back cover was offset from the PCB using three male-female spacers.

M3 x 10mm brass spacer standoffs

Here is a look at the assembled case.

Notice the rear cover has only three spacers due to the Nano’s USB port.

Final product

Here is a top view of the finished product. I like how the crystal PLA+ worked as a diffuser. But I think black acrylic would look even sharper. I have plans to possibly incorporate this PCB into a future bigger build, so the case I made for it is probably short-lived.

Fibonacci 32 Soldering Kit

Here is a short clip of the Fibonacci 32 in action. I love that the design included a button to change the brightness.

Overall this was an enjoyable kit to assemble. Those newer to soldering can pick up a technique for soldering pins to small items using a solderless breadboard. Plus, it just looks pretty dang cool.

Parts used or mentioned in this post

Fibonacci 32 Soldering Kit – Cyber City Circuit

Fibonacci 32 Soldering Kit Acrylic add-on – Cyber City Circuit

GST3D Crystal PLA+
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IIIDMax Black PLA+
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Song of the Day: I Was Made For Loving You

The Fibonacci 32 reminds me of something that would have existed in Discos. Well, I don’t disco… But I will listen to a Kiss Disco song.

Bonus Song: Dancing Fool

I think Frank Zappa sums up the old disco scene pretty well. Plus, whippin post is also in this outstanding performance.

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