my recent reads..

LEAP#303 Keyboard Matrix Module

I picked up one of these 4x4 Independent Keyboard Matrix modules to see how useful it might be for arbitrary input with a microcontroller. I examine how it is constructed, and provide some examples of how to make it work: LedControl - controlling the LEDs; KeyMatrixInput - multiplexed key input; SwitchInterrupts - interrupt-driven switch input. As always, all notes, schematics and code are in the Little Electronics & Arduino Projects repo on GitHub hero_image


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LEAP#302 Game of Life on the Boldport Club Matrix

This is a quick and dirty implementation of Conway’s Game of Life on the Boldport Matrix, mainly to learn a bit more about using the AS1130 LED driver. As always, all notes, schematics and code are in the Little Electronics & Arduino Projects repo on GitHub


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LEAP#301 DHT11 Sensor Basics

The DHT11 sensor is a very cheap and common sensor that provides readings of relative humidity (20-80% ±5%) and temperature (0-50°C ±2°C). For a first test, I’m using a simple DHT11 library from the arduino playground. As always, all notes, schematics and code are in the Little Electronics & Arduino Projects repo on GitHub hero_image


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LEAP#300 The Matrix LED Test

The LRAS1130 Arduino library from @luckyresistor is an easy way to get started with the BoldportClub Matrix and an Arduino. I’m using a slightly modified version of the LedTest sketch from the library here. LED test = all passing! As always, all notes, schematics and code are in the Little Electronics & Arduino Projects repo on GitHub hero_image


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