bookmark_borderChristmas badge Rev 1

About this cool project

A really simple open-source PCB badge made for the spirit of Christmas. You can hang it onto a Christmas tree or wherever using a piece of string or a ribbon.

The board has 5 red LEDs which light up at full brightness powered by a CR2032 coin cell battery at +3V DC. This was originally supposed to have LEDs with different colors but during testing, only some lit up. What happened was that some of the LEDs required more power than light up and emit that particular color. Instead of redesigning the board to use a different power source like a USB port, I just populated the board with red LEDs as it uses way less current than the other LEDs and I could light 5 of them at the same time. 😀

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bookmark_borderLet’s make Aluminum PCBs using KiCad

We usually see printed circuit boards ( PCBs ) use FR4 ( fiberglass ) as the substrate. There are all kinds of materials that can be used for the substrate but I’ll be taking a look at Aluminum PCBs which are also commonly used, design one using KiCad, and get it manufactured. Let’s get started!

How do Aluminum PCBs work?

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bookmark_borderSHT20 Breakout board


This breakout board is based on the SHT20 temperature and humidity sensor from Sensirion. The sensor is pretty small and it can give decent results. The breakout board is only 10×10 mm making it ideal for projects that are compact. If you’re wondering if you can use this in an Arduino project you’ll be pleased to know that you can but however you’ll need to use a microcontroller that runs on 3-3.3V and that supports I2C. DFRobot has provided a very convenient Arduino library that you can use  The board is open source and you can find the github repo of this board at the end of the post

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bookmark_borderCH340C USB TO UART BRIDGE

About this project

This simple USB to UART bridge is based off the popular and pretty common CH340C usb to serial chip. It also has an independent +3.3V regulator at the bottom of the PCB and has a type C port. Every single pin of the ch340c IC has been expanded in order to make full use of it or to possibly reconfigure it.

PCB layout + dimensions

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bookmark_borderStormduino Youtube video

In this video, I explain and give a demo on one of my projects known as stormduino. I also talk about the previous revisions of stormduino before getting to the final refined revision ( Rev 2.2 ). Hope you like this video and if you do please consider supporting me on Kofi, subscribing to my channel and leaving a like 🙂

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bookmark_borderStormduino is now OSHW certified !

A while back a project known as stormduino was started in collaboration with tecknologg and the cool folks over at . Stormduino is pretty much a KiCad designed Arduino Uno compatible clone that utilizes a USB Type-c port and has much simpler components that still maintains it’s integrity. It was originally open source since Rev 1 but after refining the design, we wanted to really show that this was actually open-source hardware. After hearing about the open-source hardware certification program we decided to apply for it. To our luck, we got approved and celebrated with a cup of coffee 🙂

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