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…
Category: Common
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 /…
Inline AES 256 / CBC Implementation
Today I like to share some encryption code, which can be used in various situations – and is also useful for embedded systems. It is a unique implementation of the AES 256 / CBC crypto algorithm. The goal of this implementation was neither speed nor size. It was written to inline it into existing code….
Good Quality Boards from PCBWay
Recently I received boards for a sensor array from PCBWay. This boards were made in a very good quality considering the low price level. I really like the green solder mask they use, it creates a nice optical effect shifting the green colour towards yellow somehow. The solder mask produces a very nice contrast between…
PCBite Kit 2.0 from Sensepeek Arrived
Last week the new PCBite Kit 2.0 from Sensepeek arrived. The new kit comes with the great PCBite holder from the previous version, which are very useful to fasten a PCB for soldering, rework or analysis. New to this kit are the handy probes, which also can be magnetically attached to the mirror board. The…
Open Position for Step-Up Converter
For a current project I need a step-up converter to get 5 volts from 2.5V-5.5V input. The output of this converter is used to power sensors which drive motors and small heat elements from this source. The average consumed current is 160mA with a peek at 320mA. In the photo you can see the latest…
Adafruit PCB Coaster Arrived
Today I got the PCB coaster from Adafruit. They look so much better in real than on the photos in the shop. The coasters are made from 2.4mm FR4 PCB material. There is a transparent solder mask on the top to protect the copper and gold elements. The frame around the image is black silkscreen. I…
Snowflake Assembly Video
Here a quick video of the snow flake assembly. It shows the assembly of the LED side of the panel using hot air. The assembly went without big problems, except there was a little bit excess solder on the pads. Therefore the LEDs do not lay perfectly flat on the board.
Perfect Snowflake Panels from Eurocircuits
Eurocircuits delivered some perfect panels for the snow flake board. Each panel has five snow flake boards on it. This was an impressive good job from from Eurocircuits. There are a quite number of challenges to produce panels in this outstanding quality: The width of the small decorative lines on the front is just 0.15mm….
White Boards from PCBWay
Recently, the boards for a small power converter arrived from PCBWay. This board house provides a fast and reliable service. In the following image you can get a own impression of the produced boards: