> The Coral USB accelerator doesn't accelerate all of the layers, only some of them. My understanding is that with the pretrained models, everything happens on

> The Coral USB accelerator doesn't accelerate all of the layers, only some of them. My understanding is that with the pretrained models, everything happens on the TPU. If you use some lightweight transfer learning techniques to tweak the model [1], the last layer happens on the CPU. That's supposed to be insignificant, but I haven't actually tried it. I'm very curious what you're using for a model. You're clearly further along than I am. Did you use your own cameras' data? Did you do transfer learning? (If so, what did you start from? you mentioned SSDMobileNet and Yolo3. Do you have a favorite?) Did you build a model from scratch? Anyway, my point is that a similar project seems doable on a Raspberry Pi 4 with some extra hardware. I don't mean to say that you're Doing It Wrong for using a Xavier. I've thought about buying one of those myself... [1] https://coral.ai/docs/edgetpu/models-intro/#transfer-learning-on-device https://coral.ai/docs/edgetpu/models-intro/#transfer-learnin...