Category Archives: Hardware

digital Tape Recorder for the KIM-1 (and clones)

[ ]In October 2017 I wrote a post with the title “Solid State Tape Device for the (micro)KIM“. Recently one of the makers (Dirk Dral) wanted to adapt the device for use with a genuine KIM-1 and ran into some … Continue reading

Posted in Arduino, Computer, ESP8266, Firmware, Hardware, KiCAD, KIM, Uncategorised, WiFi | Tagged , , , , | 2 Comments

A 32kb Memory Expansion Board for the microKIM

[ ] 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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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

Posted in Arduino, ESP8266, Hardware, WiFi | Tagged , , , , , , , | 43 Comments

Controlling Lots of Relays with only 2 GPIO pins

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

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

I2C Rotary Encoder

4,868 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

Posted in Arduino, Computer, ESP8266, Hardware, KiCAD | Tagged , , | 4 Comments

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

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