This radio module can act as an RFID device, a key fob, and a wireless serial link. It also has 16-bit cyclic redundancy checking, motor noise tolerance, and networking capability, so it’s truly a robot’s radio.
3D printing has become so good that the printed prototypes outlive their usefulness. Most of my 3D printed plastic prototypes serve their purpose for perhaps five minutes and then end up in landfills along with lots of empty filament spools. ABS plastic and even so-called biodegradable polylactic acid (PLA) will probably survive decades in the environment. Isn’t it time to find ways to repurpose this technology to decrease its footprint?