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This project provides 3D-Model, hardware and source code for a simple LEDSign. It has been designed for a project in the CRBK upper grammar school.
A instruction on how to build a LEDSign you can find here.
There are different versions of the PCB-Board.
The main difference between the plattforms is the used microcontroller plattform:
- Arduino Nano
- WEMOS D1 Mini
All PCB-boards allow to drive up to 8 logical groups of LEDs using the shift register including output drivers.
Some of them have special features like:
- Brightness control by use of a LDR (Light Dependend Resistor) on one of the analog inputs
- Button to react on user input
- Temperature Sensor (Dallas DS18B20 or DHT11/DHT22)
The Software mainly provides a class for accessing the LED-PCB board with it's features. Easily allows to set/unset LEDs and use the features like brightness dependend dimming.
| HW-Version | Kompatible SW | µC | Besonderheiten |
|---|---|---|---|
| before 24 | LEDSign23.0N | Arduino Nano | Taster, LDR - nur SW dimming |
| LEDSign24.1N | LEDSign24.1N | Arduino Nano | Taster, LDR |
| LEDSign24.2N | LEDSign24.2N | Arduino Nano | Taster, LDR und DS18B20 |
| LEDSign24.3N | LEDSign24.2N | Arduino Nano | Taster, LDR und DS18B20, andere Platzierung |