For the first time I blew up an ESP8266. Which is difficult to do, they are pretty robust. This one is kaput though =/

The remote lock/unlock for the car has these weird surface mount buttons on them. They have a rubber plunger and they are not tactile. These needed replacing because they started to fail. I took a gamble on some surface mount tactile switches from ebay (a few bucks for like 20). They fitted well and give you a much more obvious click feeling when you press.