Category Archives: Arduino

A 32kb Memory Expansion Board for the microKIM

Posted on 19 February 2021 by Willem Aandewiel

[ ] As you may know, I own a microKIM (KIM-1 clone) Single Board Computer (SBC).  It is a trip down memory lane to work with the incredible simplicity of what was once “top of the bill” technology. The original … Continue reading →

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Posted in Arduino, Computer, ESP8266, Hardware, KIM | Tagged , , , , , , | 5 Comments

Extending GPIO pins on your Micro Processor

Posted on 10 August 2020 by Willem Aandewiel

[ ]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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Posted in Arduino, ESP8266, Hardware, KiCAD | Tagged , , , , , , | Leave a comment

DSMR-logger schrijft nu rechtstreeks in InfluxDB / Grafana

Posted on 22 July 2020 by Robert van den Breemen

[ ] Door de jaren heen had ik mijn Slimme Meter uitgelezen met een USB P1 kabel en een Raspberry PI, echter een Raspberry PI moet regelmatige geupdate worden, SD kaartjes gaan kapot, Home Automation software moet regelmatig bijgewerkt worden … Continue reading →

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Posted in Arduino, ESP8266, Firmware | Tagged , , , , | 20 Comments

An ESP8266 Ticker

Posted on 9 June 2020 by Willem Aandewiel

[ ] 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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Posted in Arduino, ESP8266, Hardware, WiFi | Tagged , , , , , , , | 97 Comments

Controlling Lots of Relays with only 2 GPIO pins

Posted on 1 May 2020 by Willem Aandewiel

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

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Posted in Arduino, Computer, ESP8266, Hardware, WiFi | Tagged , , , , , , | 1 Comment

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

Posted on 28 February 2020 by Willem Aandewiel

Nieuwe, op restAPI’s gebaseerde firmware voor de DSMR-logger
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Posted in Arduino, DSMR-logger, ESP8266, Firmware, WiFi | Tagged , , , , , | 637 Comments

I2C Rotary Encoder

Posted on 3 October 2019 by Willem Aandewiel

14,570 keer bekeken / 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 … Continue reading →

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Posted in Arduino, Computer, ESP8266, Hardware, KiCAD | Tagged , , | 10 Comments