Reddit reviews BIQU Smart Display Controller Ramps 1.4 2004LCD Controller with Adapter for 3D Printer RepRap Adapter
We found 2 Reddit comments about BIQU Smart Display Controller Ramps 1.4 2004LCD Controller with Adapter for 3D Printer RepRap Adapter. Here are the top ones, ranked by their Reddit score.
Popular RepRap 3D Printer LCD Controller and SD Card ReaderThe intelligent controller includes an SD card reader, rotary encoders and a 20-character × 4 line LCD displayYou can easily connect it to your RAMPS 1.4 board using "smart adapter" included3D design print without a computer, just use the G code design stored on the SD cardWith Smart LCD Controller you can print 3D designs without USB connection to your computer
When I put mine together, I had an issue with the screen contrast. But it sounds like yours may have just died.
You can find replacement screens on Amazon (like this one) and AliExpress. It's a standard part, so they're pretty cheap.
That RAMPS 1.4 SB thing looks amazing for a RAMPS. The one issue I see is that it looks like you're buying a 24V PSU, and I'm pretty sure even with that beefy board, RAMPS tops out at a bit above 12V. With the upgraded MOSFETs and connectors, a high intensity 12V PSU wouldn't be an issue in the slightest, but you'll need to get something that is 12 volts. In addition, if you want to use the screen included with your Duplicator, you'll need the adapter that clips onto the I/O pins at the back of the board. Weirdly, one of the cheapest ways to get one is to just buy an entire LCD assembly and keep the spare LCD around as a spare part. You'll also need the "RRD adapter cable" available on Panucatt's website, though that's just a buck fifty, so it's not like that's a huge loss. Lastly, you may have to add some custom lines to the firmware file to support the PT100 on the RE-ARM. I recall Smoothieware has support for the PT100, but it requires enabling a few flags, and installing a newer version of Smoothieware on the board than what's included with the RE-ARM (unless they've updated it since I bought mine, totally possible, as that was several months ago).
Other than that, I'd say it's a pretty kickass upgrade.