In this brief article, I will discuss the requirements to flash a custom firmware to your Pimoroni snowflake decoration. I assume you have some programming knowledge and have previously worked with an Arduino Uno or Adafruit Feather. Required Hardware For the Pimoroni version:5 pin programming header. One for each snowflake. SWD programmer. Jumper cables or adapter…
Author: Lucky Resistor
Candlelight Effect
Here I briefly document a very realistic candlelight effect you can build with very few components. It works best if the device is placed in a jar or behind a screen, where the Neopixel ring is not in direct sight. You will find all the required information, schema and the firmware to build the device….
How to Wire the Snowflake Decoration
If you own an original snowflake kit or produced boards from the sources, you have to wire them by yourself. The pre-assembled kit from Pimoroni comes with some nice flex-cables, but you may want to replace them with more decorative ones. Here I explain how to create a custom wiring for your snowflake decoration. Layout…
Snowflake Configuration
In version 1.2 of the snowflake firmware, I added a configuration mode, using a button attached to the data in of the first element. The States The attached button can issue two actions: a short press and a long press. A short press is anything from 50ms to approximate two seconds, and a long press…
Recreating the Human Perception of the Snowflake Sparkling Effect
The sparkling lights on the real snowflake decoration are stunning and beautiful. Yet, it seems to be impossible to capture the effect with a video. After some experiments, I created a new video with a simple effect applied. It does not resemble the tiny, spiky and beautiful corona around the lights you see with your…
Snowflake Project Videos
From the beginning of the snowflake project, I tried to create photos or videos which capture the actual beauty of the decoration. Here are the two more recent videos I created: Differences to the Real Impression I am not happy with the videos and photos so far, because the effect looks dull and flat compared…
Snowflake Decoration Available on the Pimoroni Store
We have some great news about my Snowflake Decoration: Starting today, you can buy an assembled version of the project from Pimoroni that can be shipped worldwide. Pimoroni did an excellent job on this project. No soldering is required at all, meaning this is the user-friendliest version of the project ever released! The project comes…
HAL LCD Demo
I added more modules to the HAL layer. The Hitachi LCD driver is now in a stable state. It uses a MCP23008 chip-based backend to reduce the number of wires required to access the display. Video Parts This demo uses a number of Adafruit boards and components: Adafruit Feather M0 (any type) Adafruit I2C /…
Event-Based Firmware Example
If you read the previous articles about event-based firmware, modularisation and templates, you may wonder how to combine all these concepts in your firmware. I created a working firmware example, based on an event loop. In contrast to the minimal example code in my articles, this one contains everything you need to start a project….
Consistent Error Handling
Error handling in firmware is a difficult task. If you decide to ignore errors, the best you can expect is a deadlock, but you could also damage the hardware. When reviewing existing code, I often find boolean return values or a system of error codes. The problem with these systems is the lack of readability….