Megadesk Companion

This board expands the megadesk to allow for smart-home integration - notably with Home Assistant using esphome. This is an add-on board - you still need to buy a megadesk that does the interfacing with the desk motors/controllers.

Case Option (new)

There is now a case/bracket to allow you to sandwich your case. It is printed from a commercial resin printing service. Please watch the video guide for this option to ensure it is cosmetically pleasing for you before ordering. You can always just use double-sided tape to secure the board elsewhere if you'd like. The case STL is also available if you want to 3D print your own.

Old megadesk wiring

All orders will ship with a 5-pin cable to connect the companion to the megadesk. If you require the legacy cable for 3-pin megadesks, you must specify this in the order notes.

Full setup videos

• Megadesk

• Flashing the companion for the first time

Features

• For newer 5-pin megadesks, plug and play!
• Older 3-pin megadesks require soldering 2 wires to SCK/MISO
• Built-in logic-level shifting between megadesk (5V) and the ESP32 (3.3V)

Using

• Pay attention to the warning on the PCB. It is imperative the RED+ on both sides represents the 24V power source.
• The esphome files are located at the main megadesk repository
• Using the USB-C port will use the ESP32-C3's native USB interface to support the first uploading of code
• Connecting USB-C while the device is powered from the main cable will not cause damage. However, it is recommended to only use the USB-C port while flashing. The device can be flashed over WiFi after the first time.

Additional Information

• The megadesk repository is the main location for all discussion and issues. There is a popular discussion relating to esphome usage.

Why an addon board?

When designing I considered a brand new megadesk PCB with all of this functionality integrated, or an addon board.

With the addon, it achieves

1. People who do NOT want any of this extra functionality do not need to pay the extra costs for this board. The ESP32 is pricy.

2. We still respect the initial design goal of using the same enclosure.

3. It provides an upgrade path for the many existing owners of megadesk to add-on this functionality without wasting their initial controller.

4. It keeps the code base for megadesk isolated, and avoids refactoring the code to ESP32 and requiring me to support esphome changes over time.