"What is the scope showing? Is..." <- 1. I colored the schematic in the same colors to show which pins they're connected to. 2. Yes, that's the yellow signal. Though it doesn't show it when the signal is low. 3. I'm pretty sure I've got the pinout correct. Double checked if pin 1 is on pad 1. 4. It's not hot to the touch. 5. DE pin is doing what I expected. 6. I only have one board. I've got the components to solder another one though.