Twonkie - a USB-PD sniffer based on Google's Twinkie Twonkie is a USB-PD sniffer/injector/sink based on a Google project called Twinkie, re-engineered to be made in one-off quantities by mere mortals. Twinkie is a great and pretty low-cost solution, and it's open-source so anyone could make their own, but unfortunately the Twinkie design uses a six-layer PCB and all BGA/wafer-scale parts - both of which are usually unavailable to the humble hobbyist. So I designed the Twonkie, a slightly wonky s...