Author Archives: Willem Aandewiel

Extending GPIO pins on your Micro Processor

[ ]Somehow, no matter what micro processor I choose, I end up with too few GPIO pins for the projects needs or for what I want to do. For a recent project I switched from the ESP8266 to the ESP32 … Continue reading

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An ESP8266 Ticker

[ ] INTRODUCTION From the moment I saw the MAX7219 Dot matrix modules I wanted to build a news ticker. I wanted the option to enter my own messages without having to install special Apps on my phone or tablet. … Continue reading

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Controlling Lots of Relays with only 2 GPIO pins

Piggyback board for 8- or 16-relays boards to control with I2C Continue reading

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restAPI’s zijn hip! (nieuwe firmware voor de DSMR-logger)

Nieuwe, op restAPI’s gebaseerde firmware voor de DSMR-logger
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I2C Rotary Encoder

4,116 views I will address two topics in this post. The first one is about Rotary Encoders and what you can do with them. The second is about the Inter-Integrated Circuit protocol (I²C), developed by Philips. Een in het Nederlands … Continue reading

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Universal InfraRed IoT Learning Remote

[ ] In this post I will guide you through the process of building a device that can capture Infrared-messages from an Infrared remote controller (learning mode), and resend the captured Infrared-messages (sending mode). I will use the affordable and … Continue reading

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Always wanted to own a PDP-11? Now you can!

[ ] Some time ago I wrote a post about my trip down memory lane. I visited the Apple Museum Nederland and wrote how that brought me to the micro-KIM computer. A replica of my very first computer: the KIM-1. … Continue reading

Posted in Computer, Hardware | Tagged , , , | 2 Comments