Category Archives: Hardware

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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I2C Rotary Encoder

4,083 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

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DSMR-logger V4 (Slimme Meter uitlezer)

[ ] In augustus 2018 publiceerde ik een project voor het uitlezen van de Slimme Meter. Aan de hand van de vele reacties van de mensen die het project hebben nagebouwd en mijn eigen ervaring met versie 3 van de … Continue reading

Posted in Arduino, Computer, ESP8266, Hardware, Uncategorised, WiFi | 449 Comments