With the GH Smart Shaper, GH Enterprise offers a self-proclaimed method of adding input shaping to 3D printers – even those with Marlin firmware.
Given both the surge in popularity of Klipper and the ongoing chip shortage – affecting the availability of the Raspberry Pi, which is necessary to access and fine-tune input shaping – this seems like a sure bet, as there is no need to tinker with firmware. Instead, the GH Smart Shaper uses two plug-in drivers (TMC2225-SA) with dedicated CPUs, allowing users to avoid using “external host cards such as RPI4,” according to the product page. “Just replace the X- and Y-axis drivers with the GH Smart Shaper drivers, add some configuration commands to your G-code, and you are ready to print with input shaping.”
Note the term “plug-in” in the passage above. This solution is only going to be viable for those with header-mounted stepper motor drivers rather than drivers soldered directly to the board. Check your mainboard setup before diving in on this solution. Now, the important question is: is it effective? That’s up in the air, as we’ve yet to try it for ourselves – and there are currently no reviews on Amazon or eBay where the GH Smart Shaper can be picked up for €39.80 (~$40). You can see it in action in a Teaching Tech deep dive on YouTube, which shows impressive results, and find the full details on the GH Enterprise website, including full specs, a datasheet, and other pertinent information.