*The V4.X.X Boards have a 5V output on the BL_T header but we do not recommend using that to power the EZNeo as we do not want to overload the 5V rail on these boards. It is recommended to supply a separate 5V adapter. Also, due to how these boards are designed the USB back feeds power to the 5V rail and can contribute to overdrawing from the USB power if the printer PSU is powered off.
If your control board does not have the capacity and/or headers (1.0A @ 5V) to power the strip directly, you can power them with a simple step-down module. We carry 5V step downs that have wires pre-soldered and pre-set to 5V for quick and easy installation. The only soldering required for our 5V adapter is the connection between the 5V output and the jumper wires to plug into the EZNeo 3 Pin plug for power. Jumper wires are included with our 5V adapter linked below.
They will require you to solder to the step down to attach the power input and output wires.
The V4.X.X boards have up to 4 IO pins that are available to use. 2 are located on the BL_T header and 2 are on the programming header above the LCD. You can use any of these to control the EZNeo strips. Below is a picture showing the pin locations and their corresponding pin numbers.
Whatever pin you connect to will be the one you specify in the firmware. Nothing else can be using these pins, so choose one that is not used.
Some boards may not have the PA13 or PA14 pins soldered as shown below but you can solder them on fairly easily as it’s a through-hole via. You can get the pin rows on Amazon here with our affiliate link: https://amzn.to/3KmPk8J
NOTE: J1 S Pin is Pin PA4 will not work due to a pullup resistor on it. Do not use Z signal pin (PA7) as it has a pullup on it just like PA4.
If you are using our Unified 2 firmware, there are preset settings in the Configuration.h file to support the EZNeo strip. All you need to do is uncomment the line for the EZNeo strip you are using, uncomment the NEOPIXEL_PIN line, and enter in the pin number you are using.
If you are using a standard build of Marlin (aka “Vanilla” Marlin), follow the directions below to set the correct options to use the strips with your Marlin build. These directions are based on Marlin 2.0.9.1. Older/newer versions of Marlin may have different values than shown below.
In Configuration.h make the following changes:
In Configuration_adv.h make the following changes:
These settings will enable all the Marlin RGB LED control options. You can change the LED colors from your printer LCD menu or through Gcode commands (M150)
