I've been looking at those medical pill cameras and figured the concept isn't too complex - basically a tiny camera, some processing, and a radio in a pill form factor. Decided to see if I could build something similar. Just got done soldering a test PCB that uses an HM01B0 camera sensor, iCE40UP5K FPGA, and CC1310 for 868MHz transmission. The general idea is camera feeds frames to the FPGA which does real-time compression, then the CC1310 transmits the compressed data. This test board is obviously way oversized for any actual pill application, but should be enough to see if the approach works and what kind of image quality and power consumption we're dealing with. The iCE40UP5K has 5K LUTs which should be enough for basic compression.