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Category Archives: Hardware
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
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
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 1of!-esp12, 1of!-Wemos, ESP8266, lichtkrant, max7219, ticker, webserver, WiFi
97 Comments
Controlling Lots of Relays with only 2 GPIO pins
Piggyback board for 8- or 16-relays boards to control with I2C Continue reading
I2C Rotary Encoder
13,462 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
Posted in Arduino, Computer, ESP8266, Hardware, KiCAD
Tagged ATTiny84, I2C, Rotary Encoder
10 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
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