Plug-in install
No soldering for the standard connection.
A2ThreeD device guide
PixelBro84
Plug-in RGB LED controller for the Hasbro 1984 Proton Pack
PixelBro84 installs inline with the factory cyclotron LED connection. It reads the pack’s normal lighting sequence, lets you select the cyclotron color, and provides a synchronized output for optional cake LEDs.
Color + lid control
Button control with saved settings.
Optional cake output
3-pin JST-SM addressable LED output.
Installation
Install in four steps
1
Power off and open the pack
Turn the pack off, disconnect power, and remove the rear cover according to the pack manufacturer’s instructions.
2
Unplug the factory LED harness
Locate the four-pin cyclotron LED connector on the factory electronics PCB and unplug it. Note its orientation.
3
Insert PixelBro84 inline
Plug PixelBro84 into the factory PCB, then plug the original four-pin cyclotron harness into the matching PixelBro84 connector.
4
Connect options and reassemble
Optional: connect the cake LED string to the three-pin JST-SM output. Secure the controller and reinstall the rear cover.
Connection path
Factory PCB4-pin output
PixelBro84Inline controllerOptional 3-pin JST-SM
↓ Cake LEDs
↓ Cake LEDs
Cyclotron LED harnessOriginal pack LEDs
On-device control
Button controls
Press + release
Cycle the cyclotron color
The selected color is saved for the next power-up.
RedGreenBlueYellowPurple
Hold about 2–3 seconds
Toggle cyclotron lid detection
Bypass mode lets the pack continue running with the lid removed so the cake LEDs remain visible.
Confirmation: all four cyclotron LEDs flash red twice.
USB setup
Configure with your browser
Choose colors, set up the cake LED string, test LEDs, and save settings directly to PixelBro84.
BrowserDesktop Chrome or Microsoft Edge
CableData-capable USB-C cable
PowerPack may remain off during setup
Connect USB-C
Connect PixelBro84 to the computer.
Open the site
Go to pixelbroconfig.a2threed.com.
Connect device
Click Connect PixelBro84, then select Pico / RP2040.
Save settings
Adjust or test LEDs, then select Save to PixelBro84.
Cake LEDs
Set LED count, controller type, color order, data rate, direction, and start offset.
Animation
Choose cyclotron and cake colors, reverse direction, and set lid-detection bypass.
Test before saving
Walk all LEDs or test individual cyclotron and cake positions, then save to PixelBro84.
Troubleshooting
Quick fixes and support
No device appears
Use Chrome or Edge, a data-capable cable, and a direct USB port. Close other serial-terminal applications.
Red and green are swapped
Change Color order in the configurator, test an LED, then save.
Settings do not remain
Reconnect, make the change, select Save to PixelBro84, and wait for confirmation.