The design principle of the Haverford Group's Aging Chamber (Figure ) is to optimize image capture with bulk-crystal perovskite samples. Bulk-crystal samples have variable geometry, positioning on the substrate, and a smaller absolute, observable surface area compared to thin films. The samples in this chamber are placed in nine separate wells, allowing for the simultaneous testing of up to nine different samples. The surface area of the bulk crystal samples ranges from 0.5 -1.5 cm 2 . To adapt the chamber to the specific workflow and sample type, the image acquisition software was modified along with the sample heating/holding assembly, and chamber enclosure, while keeping most of the hardware choices in the first generation chamber. Minor changes were made in terms of hardware placement, microcontroller choice, electronics storage, and data acquisition scripts to suit lab operators' preference. Hardware Changes: