It’s become a cliche, but hardware is hard! One reason why hardware is harder than software is that the time between revisions is often longer. We need to wait for new PCBs, or for components to be delivered. Or for more new PCBs after we realise we got it wrong! Another reason is that it can be expensive, and not just for the physical components. We generally need more of a lab than software developers. Not just soldering irons and good lighting. Test gear is essential for learning how you...
