BIAONU UV LED Driver Board for ELEGOO Saturn 3 Ultra & Jupiter SE

A BIAONU UV LED driver board for the ELEGOO Saturn 3 Ultra and Jupiter SE resin printers. It's a constant-current source: it takes 24 V from the printer's supply, holds a steady current across the UV array and dims it over PWM. You swap it when the light engine goes weak — bottom layers stop gripping the plate, prints end up stuck to the film, and piling on more exposure doesn't fix it, because the driver sagged rather than the LCD.

Specifications

• 24 V input, constant-current output up to 4.5 A
• PWM dimming with a trimmer pot for output current
• Two LED array connectors plus a separate power input
• Third-party BIAONU board — ELEGOO doesn't retail this part

Compatibility: ELEGOO Saturn 3 Ultra, Jupiter SE. The listing calls it a "power supply", but the seller's own photo shows the LED driver board, not the printer's mains PSU. Confirm what actually ships and check the connectors against your board before ordering.