DIY MacroPad, Controls EVERYTHING

Technology / Project Overview

The video describes building a standalone DIY MacroPad that doesn’t require a computer to function, unlike many typical macro keypads.

Key points:

• The device connects with Home Assistant for smart-home control.
• It also performs local “computer control” functions via its own firmware/software stack, including:
  • Hotkeys
  • Launching apps
  • Text entry

Motivation

• Need reliable control of RGB lighting (after already spending on RGB).
• Improve productivity by avoiding manual key-combo pressing.
• Create actions that are easy to control for both:
  • The computer
  • Devices managed through Home Assistant

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Hardware Design & PCB Redesign (KiCad + Components)

The creator is upgrading an earlier ESP32 + LCD prototype into a more reliable, production-quality board.

Prototype Issue

• A DIY PCB approach used:
  • A 3D-printed base
  • Manually glued copper sheets
  • Reliance on cut-out traces later
• It worked, but wasn’t trusted long-term due to short risk if traces peel.

Production PCB Approach

• KiCad is used to redesign the schematic/layout.
• The build replaces oversized “pre-made” modules with more efficient parts, such as:
  • Removing an oversized level converter module
  • Using a single level converter IC from Digi-Key / Mouser (claimed ~$0.10 each in volume)
• Switch to SMD (surface-mount) components, but with “easy to hand-solder” sizes:
  • Uses 0805 parts instead of 0402 to make manual soldering practical
• Adds USB-C using a custom USB-C footprint/mount designed from the 3D model.

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Aesthetic / Industrial Design Features (PCB Artwork + Arcade Theme)

The PCB uses an arcade-inspired visual theme:

• Pixel-art style graphics on the board
• Uses the back side “illustration art” as part of the overall visual design
• Repurposes connector/pin areas as part of the “story” visuals:
  • ESP32 pins depict a Minecraft-like health bar
  • Encoder pins are modeled as “projectiles”
  • Other pin areas represent targets/monsters

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Enclosure & 3D Modeling Improvements

A redesigned 3D case uses a STEP import of the PCB to improve fit accuracy.

Improvements include:

• Better latch reliability and structural strength
• Change in fold axis direction to make the enclosure stronger
• Tolerance adjustments:
  • Loosens board fit tolerance so the ESP aligns relative to the screen groove

Additional mechanical reinforcement:

• Adds support to reduce stress on the USB-C area by using a nut/fastening strategy around the encoder shaft (to protect the screen cover)

The creator also mentions additional build assets were prepared for later (e.g., build files).

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Firmware / Software Capabilities (Computer Control + RGB + UI)

Standalone “Computer Mode”

The device includes a “computer app” concept that can control some functions without using Home Assistant.

Wallpaper Control

• A button can open a color/image picker and bind an image to a button
• Integration with Wallpaper Engine via profile name selection (set wallpapers in one click)

RGB Lighting Control

• Supports:
  • OpenRGB (free/open-source)
  • SignalRGB (subscription for API usage)
• Buttons can trigger dynamic color scenes

Configuration / UI

• Includes a web-based site to test and configure computer-control behavior.
• “Computer mode” actions include:
  • Knob controls volume, including click sound behavior
  • Buttons as hotkeys:
    • Launch apps
    • Write text
    • Run multi-step sequences
  • Support for images/GIFs on buttons so each key can display what it does

Hotkey Examples / Workflows

Demonstrated examples include:

• Launch Fusion, then open Notepad, then type confirmation text
• Configure a button to open a terminal and navigate to a path
• “Open new tab” style automation (example mentions YouTube Music)

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Home Assistant Integration (Smart Home Automation)

The device can be added into Home Assistant with a drawing/definition flow that simplifies creating new device targets.

Enabled features include:

• Example: controlling an LED strip under the desk
• Adding automations via workflow:
  • Open automations → drawing → add target

Additional feature:

• Pomodoro
  • Each button has a preset
  • Timer can be set from the device
  • Option to flash selected devices when the timer ends

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Build / Distribution: “Everything in One Package”

The creator states there is a website that provides:

• Blueprints for Home Assistant
• Software + firmware
• 3D models
• Gerber files
• Parts list
• Step-by-step guide

Claims/compatibility:

• Users can install firmware and connect the device without touching code
• The app works on Windows and Mac

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Manufacturing / Assembly Notes (Soldering + Quality)

Boards and parts are ordered, including versions with improved pixel art.

Soldering guidance emphasizes:

• Plan where cables/USB connections go before soldering
• Start with through-board USB legs when the board is thick
• Care when soldering LEDs (avoid overheating/damage)
• Use a printed alignment jig for buttons to ensure perfect alignment

Mechanical assembly sequence:

1. Snap diffuser into lid
2. Install board and screen protector
3. Add cover (noted satisfying “lock” sound)
4. Encoder nut + washer + screw
5. Install keycaps
6. Add rubber feet to reduce unwanted movement

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Testing / Results

Testing progressed in stages:

1. Power on and run with firmware updates
2. Desktop workflow testing:
   • Volume control works
   • Program switching works
   • Hotkeys work (example: Premiere Pro workflow)
3. Smart home testing:
   • LED strip control via Home Assistant

The project is concluded as successful and leads to additional smart-home device ideas.

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Main Speakers / Sources

• Primary speaker: The video creator/maker (the narrator building the MacroPad)
• Sponsored/source mentions:
  • PCBWay (board manufacturing sponsor)
  • Home Assistant
  • OpenRGB / SignalRGB (RGB control)
  • Wallpaper Engine
  • KiCad, Digi-Key, Mouser (design/component sourcing tools)