I am Prathamesh, co-founder of https://nanonets.com

We were working on a project to detect objects using deep learning with raspberry pi and we have benchmarked various deep learning architectures on pi. With ~100-200 images, you can create a detector of your own with this method.

In this post, we have detected vehicles in Indian traffic using pi and also added github links to code to train the model on your own dataset and then script to get inference on pi. Hope this helps!