Alex Ellis decided to grow some cress and he wanted a way of monitoring the growth. To do this, he used a Raspberry Pi Zero, a Pi camera and a cheap plastic box to grow the cress in. The Pi and camera are mounted to the outside of the box, with a hole for the camera and then Alex uses some Python code to automatically take pictures of the cress’ progress and tweet out the image. You can read about how he did it here and see his code here. (I’ve got to say: I think the code is excellent – config files, proper classes – well done, Alex!)