Articles
Everything I have written.
HomeKit builds, projects, guides and blog posts in one place, the newest first.
Projects
More Pins for an ESP8266 with an MCP23017
A test setup that adds 16 pins to an ESP8266 with an MCP23017 I/O expander on I2C, with a led as the example.
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HomeKit
ESP8266 HomeKit Garden Light
An outdoor light fitting as a HomeKit accessory: a relay for the standard E14 lamp on mains voltage and a NeoPixel strip for coloured ambience light, on a board left over from the fountain project.
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Projects
Mini CNC Laser Engraver: A Build That Did Not Work
A small laser engraver with a 3D printed frame, two stepper motors, an Arduino Nano with GRBL and a 200 mW laser, and why it never engraved.
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Projects
OctoPrint Enclosure for a Raspberry Pi 4B
A 3D printable enclosure for a Raspberry Pi 4B running OctoPrint, with a relay module, vents and a USB camera, printed in PLA on an Ender 3 V2.
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Projects
Show Your Own Logo on an OLED with an Arduino Nano
An Arduino Nano and an SSD1306 OLED on I2C that shows a black and white logo, with the Adafruit libraries.
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HomeKit
ESP8266 HomeKit Thermostat with OLED Display
A HomeKit thermostat on an ESP8266 that heats and cools, with a DHT22 sensor, a small OLED display and UP and DOWN buttons that change the set temperature by 0.5 degrees.
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HomeKit
ESP8266 HomeKit Garage Door Opener
A HomeKit garage door opener on an ESP8266: a relay pulses the opener input and a reed sensor with a magnet on the door reports open or closed. A low-voltage test setup, built from source.
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