You can do a good roast in the dark just sniffing. Being a novice and still learning the basics, I need the lights on, thermocouples, timers, other toots and whistles!
Did a couple of roasts today. Learned even more about capacity of my SC/TO, even roasting and reducing the heat after 1C. Getting another batch of beans next week from Jinotega bought at the farm gate. Had two die hard coffee drinkers say, "best ever."
Thank you Peter, for all your encouragement and coaching.