Brickmaster Relay Controller
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The Brickmaster RC supports one or two relays for 9v output, good for driving Lego motors or to replace a battery box.
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Updated at source:
Model information
- Source
- Printables
- Category
- Electronics
- License
- Creative Commons — Attribution — Noncommercial — Share Alike
An MQTT-based, Home Assistant integrated GPIO control system for controlling legos. The Brickmaster RC supports one or two relays for 9v output, good for driving Lego motors or using as a replacement for a battery box. Can be used with my Lego Wall Power Insert.
Software
Available in this repo. The software is fairly mature but not infallible and may have errors in various edge cases. Details on installing and configuring are included in the repo.
Other Brickmaster Builds
| Build | Input | Outputs | |
| 5v | 9v | ||
| Brickmaster M | 9v | 6 | 2 |
| Brickmaster XL | 9v | 8 | 8 |
| Brickmaster LD | 5v (USB) | 4 | 0 |
| Brickmaster RC | 9v | 0 | 1-2 |
| Brickmaster CV-64 | 9v | 10 | 1 |
Building the Brickmaster RC
Mini case for the Brickmaster control system While targeted towards Lego control, this could be used as a general-purpose relay control.
Takes 9V in and provides 9V output. I'm using it to control the Lego Lighthouse using my battery box insert as well as an On Air sign on my door. The Feather is powered off the 9V using the buck converter to step it down to 5V.
Two lids are provided, depending if you want to use one or two relay FeatherWings. For more than two relay-based outputs, you could try the BrickMaster 16XL or put together another configuration.
You can also search for other configurations of the Brickmaster.
The Bookcase Mount lets the controller get zip-tied to my bookcase. which I've included because it may be useful to others.
Software
Available in this repo.
It's relatively reliable but can have glitches, so don't expect it to be rock-solid-production ready. Definitely DO NOT use for anything safety related.
Components
- Adafruit ESP32 Feather v2
- Adafruit Non-Latching Mini Relay FeatherWing (1 or 2!)
- DC-DC buck converter
- 5.5 x 2.1 DC power jack
- USB-C socket connectors
- Male 5.5 x 2.1 DC power pigtail
Hardware
- 4 3mm x 4mm screws
- 2 3mm hex nuts
- 2 3mm square nuts
Assembly
No assembly instructions yet.