A photo of the two previously mentioned PCBs stacked up, the tiny dev board on the back of the LED PCB. Also seen in this pic is the tiny programmer board. Light can be seen bleeding around the edges of the LED PCB onto the white background. The tip of a thumb can be seen holding the boards.
https://cdn.masto.host/ledssocial/media_attachments/files/112/096/253/642/274/697/original/bfec367a995b0ce9.png